| Message ID | 20240412084213.1733764-10-steven.price@arm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | arm64: Support for running as a guest in Arm CCA | expand |
Hi Steven,
kernel test robot noticed the following build errors:
[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on kvmarm/next efi/next tip/irq/core linus/master v6.9-rc3 next-20240412]
[cannot apply to arnd-asm-generic/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Steven-Price/arm64-rsi-Add-RSI-definitions/20240412-164852
base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link: https://lore.kernel.org/r/20240412084213.1733764-10-steven.price%40arm.com
patch subject: [PATCH v2 09/14] arm64: Enable memory encrypt for Realms
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20240415/202404151003.vkNApJiS-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8b3b4a92adee40483c27f26c478a384cd69c6f05)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240415/202404151003.vkNApJiS-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404151003.vkNApJiS-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/hv/hv.c:13:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
509 | item];
| ~~~~
include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
516 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
528 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
537 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/hv/hv.c:132:10: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
132 | ret = set_memory_decrypted((unsigned long)hv_cpu->post_msg_page, 1);
| ^
drivers/hv/hv.c:168:10: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
168 | ret = set_memory_decrypted((unsigned long)
| ^
>> drivers/hv/hv.c:218:11: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
218 | ret = set_memory_encrypted((unsigned long)
| ^
drivers/hv/hv.c:230:11: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
230 | ret = set_memory_encrypted((unsigned long)
| ^
drivers/hv/hv.c:239:11: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
239 | ret = set_memory_encrypted((unsigned long)
| ^
5 warnings and 5 errors generated.
--
In file included from drivers/hv/connection.c:16:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
509 | item];
| ~~~~
include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
516 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
528 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
537 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/hv/connection.c:236:8: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
236 | ret = set_memory_decrypted((unsigned long)
| ^
>> drivers/hv/connection.c:340:2: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
340 | set_memory_encrypted((unsigned long)vmbus_connection.monitor_pages[0], 1);
| ^
5 warnings and 2 errors generated.
--
In file included from drivers/hv/channel.c:14:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
509 | item];
| ~~~~
include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
516 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
528 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
537 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/hv/channel.c:442:8: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
442 | ret = set_memory_decrypted((unsigned long)kbuffer,
| ^
>> drivers/hv/channel.c:531:3: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
531 | set_memory_encrypted((unsigned long)kbuffer,
| ^
drivers/hv/channel.c:848:8: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
848 | ret = set_memory_encrypted((unsigned long)gpadl->buffer,
| ^
5 warnings and 3 errors generated.
vim +/set_memory_decrypted +132 drivers/hv/hv.c
3e7ee4902fe699 drivers/staging/hv/Hv.c Hank Janssen 2009-07-13 96
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 97 int hv_synic_alloc(void)
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 98 {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 99 int cpu, ret = -ENOMEM;
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 100 struct hv_per_cpu_context *hv_cpu;
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 101
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 102 /*
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 103 * First, zero all per-cpu memory areas so hv_synic_free() can
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 104 * detect what memory has been allocated and cleanup properly
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 105 * after any failures.
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 106 */
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 107 for_each_present_cpu(cpu) {
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 108 hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu);
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 109 memset(hv_cpu, 0, sizeof(*hv_cpu));
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 110 }
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 111
6396bb221514d2 drivers/hv/hv.c Kees Cook 2018-06-12 112 hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct cpumask),
597ff72f3de850 drivers/hv/hv.c Jia-Ju Bai 2018-03-04 113 GFP_KERNEL);
9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 114 if (hv_context.hv_numa_map == NULL) {
9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 115 pr_err("Unable to allocate NUMA map\n");
9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 116 goto err;
9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 117 }
9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 118
421b8f20d3c381 drivers/hv/hv.c Vitaly Kuznetsov 2016-12-07 119 for_each_present_cpu(cpu) {
f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 120 hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 121
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 122 tasklet_init(&hv_cpu->msg_dpc,
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 123 vmbus_on_msg_dpc, (unsigned long) hv_cpu);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 124
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 125 if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 126 hv_cpu->post_msg_page = (void *)get_zeroed_page(GFP_ATOMIC);
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 127 if (hv_cpu->post_msg_page == NULL) {
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 128 pr_err("Unable to allocate post msg page\n");
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 129 goto err;
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 130 }
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 131
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 @132 ret = set_memory_decrypted((unsigned long)hv_cpu->post_msg_page, 1);
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 133 if (ret) {
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 134 pr_err("Failed to decrypt post msg page: %d\n", ret);
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 135 /* Just leak the page, as it's unsafe to free the page. */
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 136 hv_cpu->post_msg_page = NULL;
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 137 goto err;
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 138 }
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 139
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 140 memset(hv_cpu->post_msg_page, 0, PAGE_SIZE);
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 141 }
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 142
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 143 /*
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 144 * Synic message and event pages are allocated by paravisor.
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 145 * Skip these pages allocation here.
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 146 */
d3a9d7e49d1531 drivers/hv/hv.c Dexuan Cui 2023-08-24 147 if (!ms_hyperv.paravisor_present && !hv_root_partition) {
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 148 hv_cpu->synic_message_page =
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 149 (void *)get_zeroed_page(GFP_ATOMIC);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 150 if (hv_cpu->synic_message_page == NULL) {
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 151 pr_err("Unable to allocate SYNIC message page\n");
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 152 goto err;
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 153 }
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 154
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 155 hv_cpu->synic_event_page =
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 156 (void *)get_zeroed_page(GFP_ATOMIC);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 157 if (hv_cpu->synic_event_page == NULL) {
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 158 pr_err("Unable to allocate SYNIC event page\n");
68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 159
68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 160 free_page((unsigned long)hv_cpu->synic_message_page);
68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 161 hv_cpu->synic_message_page = NULL;
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 162 goto err;
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 163 }
faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 164 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 165
68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 166 if (!ms_hyperv.paravisor_present &&
e3131f1c81448a drivers/hv/hv.c Dexuan Cui 2023-08-24 167 (hv_isolation_type_snp() || hv_isolation_type_tdx())) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 168 ret = set_memory_decrypted((unsigned long)
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 169 hv_cpu->synic_message_page, 1);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 170 if (ret) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 171 pr_err("Failed to decrypt SYNIC msg page: %d\n", ret);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 172 hv_cpu->synic_message_page = NULL;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 173
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 174 /*
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 175 * Free the event page here so that hv_synic_free()
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 176 * won't later try to re-encrypt it.
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 177 */
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 178 free_page((unsigned long)hv_cpu->synic_event_page);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 179 hv_cpu->synic_event_page = NULL;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 180 goto err;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 181 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 182
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 183 ret = set_memory_decrypted((unsigned long)
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 184 hv_cpu->synic_event_page, 1);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 185 if (ret) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 186 pr_err("Failed to decrypt SYNIC event page: %d\n", ret);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 187 hv_cpu->synic_event_page = NULL;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 188 goto err;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 189 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 190
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 191 memset(hv_cpu->synic_message_page, 0, PAGE_SIZE);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 192 memset(hv_cpu->synic_event_page, 0, PAGE_SIZE);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 193 }
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 194 }
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 195
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 196 return 0;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 197
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 198 err:
572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 199 /*
572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 200 * Any memory allocations that succeeded will be freed when
572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 201 * the caller cleans up by calling hv_synic_free()
572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 202 */
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 203 return ret;
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 204 }
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 205
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 206
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 207 void hv_synic_free(void)
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 208 {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 209 int cpu, ret;
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 210
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 211 for_each_present_cpu(cpu) {
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 212 struct hv_per_cpu_context *hv_cpu
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 213 = per_cpu_ptr(hv_context.cpu_context, cpu);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 214
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 215 /* It's better to leak the page if the encryption fails. */
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 216 if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 217 if (hv_cpu->post_msg_page) {
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 @218 ret = set_memory_encrypted((unsigned long)
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 219 hv_cpu->post_msg_page, 1);
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 220 if (ret) {
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 221 pr_err("Failed to encrypt post msg page: %d\n", ret);
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 222 hv_cpu->post_msg_page = NULL;
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 223 }
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 224 }
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 225 }
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 226
68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 227 if (!ms_hyperv.paravisor_present &&
e3131f1c81448a drivers/hv/hv.c Dexuan Cui 2023-08-24 228 (hv_isolation_type_snp() || hv_isolation_type_tdx())) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 229 if (hv_cpu->synic_message_page) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 230 ret = set_memory_encrypted((unsigned long)
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 231 hv_cpu->synic_message_page, 1);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 232 if (ret) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 233 pr_err("Failed to encrypt SYNIC msg page: %d\n", ret);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 234 hv_cpu->synic_message_page = NULL;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 235 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 236 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 237
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 238 if (hv_cpu->synic_event_page) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 239 ret = set_memory_encrypted((unsigned long)
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 240 hv_cpu->synic_event_page, 1);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 241 if (ret) {
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 242 pr_err("Failed to encrypt SYNIC event page: %d\n", ret);
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 243 hv_cpu->synic_event_page = NULL;
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 244 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 245 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 246 }
193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 247
23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 248 free_page((unsigned long)hv_cpu->post_msg_page);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 249 free_page((unsigned long)hv_cpu->synic_event_page);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 250 free_page((unsigned long)hv_cpu->synic_message_page);
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 251 }
37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 252
9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 253 kfree(hv_context.hv_numa_map);
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 254 }
2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 255
On 15/04/2024 04:13, kernel test robot wrote: > Hi Steven, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on arm64/for-next/core] > [also build test ERROR on kvmarm/next efi/next tip/irq/core linus/master v6.9-rc3 next-20240412] > [cannot apply to arnd-asm-generic/master] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Steven-Price/arm64-rsi-Add-RSI-definitions/20240412-164852 > base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core > patch link: https://lore.kernel.org/r/20240412084213.1733764-10-steven.price%40arm.com > patch subject: [PATCH v2 09/14] arm64: Enable memory encrypt for Realms > config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20240415/202404151003.vkNApJiS-lkp@intel.com/config) > compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8b3b4a92adee40483c27f26c478a384cd69c6f05) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240415/202404151003.vkNApJiS-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@intel.com> > | Closes: https://lore.kernel.org/oe-kbuild-all/202404151003.vkNApJiS-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > In file included from drivers/hv/hv.c:13: > In file included from include/linux/mm.h:2208: > include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 509 | item]; > | ~~~~ > include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 516 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ > include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] > 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" > | ~~~~~~~~~~~ ^ ~~~ > include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 528 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ > include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 537 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ >>> drivers/hv/hv.c:132:10: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 132 | ret = set_memory_decrypted((unsigned long)hv_cpu->post_msg_page, 1); > | ^ > drivers/hv/hv.c:168:10: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 168 | ret = set_memory_decrypted((unsigned long) > | ^ >>> drivers/hv/hv.c:218:11: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 218 | ret = set_memory_encrypted((unsigned long) > | ^ > drivers/hv/hv.c:230:11: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 230 | ret = set_memory_encrypted((unsigned long) > | ^ > drivers/hv/hv.c:239:11: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 239 | ret = set_memory_encrypted((unsigned long) > | ^ > 5 warnings and 5 errors generated. > -- > In file included from drivers/hv/connection.c:16: > In file included from include/linux/mm.h:2208: > include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 509 | item]; > | ~~~~ > include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 516 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ > include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] > 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" > | ~~~~~~~~~~~ ^ ~~~ > include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 528 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ > include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 537 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ >>> drivers/hv/connection.c:236:8: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 236 | ret = set_memory_decrypted((unsigned long) > | ^ >>> drivers/hv/connection.c:340:2: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 340 | set_memory_encrypted((unsigned long)vmbus_connection.monitor_pages[0], 1); > | ^ > 5 warnings and 2 errors generated. > -- > In file included from drivers/hv/channel.c:14: > In file included from include/linux/mm.h:2208: > include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 509 | item]; > | ~~~~ > include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 516 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ > include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] > 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" > | ~~~~~~~~~~~ ^ ~~~ > include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 528 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ > include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] > 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~ ^ > 537 | NR_VM_NUMA_EVENT_ITEMS + > | ~~~~~~~~~~~~~~~~~~~~~~ >>> drivers/hv/channel.c:442:8: error: call to undeclared function 'set_memory_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 442 | ret = set_memory_decrypted((unsigned long)kbuffer, > | ^ >>> drivers/hv/channel.c:531:3: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 531 | set_memory_encrypted((unsigned long)kbuffer, > | ^ > drivers/hv/channel.c:848:8: error: call to undeclared function 'set_memory_encrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 848 | ret = set_memory_encrypted((unsigned long)gpadl->buffer, > | ^ > 5 warnings and 3 errors generated. Thats my mistake. The correct place for declaring set_memory_*crypted() is asm/set_memory.h not asm/mem_encrypt.h. Steven, please could you fold this patch below : diff --git a/arch/arm64/include/asm/mem_encrypt.h b/arch/arm64/include/asm/mem_encrypt.h index 7381f9585321..e47265cd180a 100644 --- a/arch/arm64/include/asm/mem_encrypt.h +++ b/arch/arm64/include/asm/mem_encrypt.h @@ -14,6 +14,4 @@ static inline bool force_dma_unencrypted(struct device *dev) return is_realm_world(); } -int set_memory_encrypted(unsigned long addr, int numpages); -int set_memory_decrypted(unsigned long addr, int numpages); #endif diff --git a/arch/arm64/include/asm/set_memory.h b/arch/arm64/include/asm/set_memory.h index 0f740b781187..9561b90fb43c 100644 --- a/arch/arm64/include/asm/set_memory.h +++ b/arch/arm64/include/asm/set_memory.h @@ -14,4 +14,6 @@ int set_direct_map_invalid_noflush(struct page *page); int set_direct_map_default_noflush(struct page *page); bool kernel_page_present(struct page *page); +int set_memory_encrypted(unsigned long addr, int numpages); +int set_memory_decrypted(unsigned long addr, int numpages); Suzuki > > > vim +/set_memory_decrypted +132 drivers/hv/hv.c > > 3e7ee4902fe699 drivers/staging/hv/Hv.c Hank Janssen 2009-07-13 96 > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 97 int hv_synic_alloc(void) > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 98 { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 99 int cpu, ret = -ENOMEM; > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 100 struct hv_per_cpu_context *hv_cpu; > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 101 > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 102 /* > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 103 * First, zero all per-cpu memory areas so hv_synic_free() can > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 104 * detect what memory has been allocated and cleanup properly > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 105 * after any failures. > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 106 */ > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 107 for_each_present_cpu(cpu) { > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 108 hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu); > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 109 memset(hv_cpu, 0, sizeof(*hv_cpu)); > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 110 } > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 111 > 6396bb221514d2 drivers/hv/hv.c Kees Cook 2018-06-12 112 hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct cpumask), > 597ff72f3de850 drivers/hv/hv.c Jia-Ju Bai 2018-03-04 113 GFP_KERNEL); > 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 114 if (hv_context.hv_numa_map == NULL) { > 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 115 pr_err("Unable to allocate NUMA map\n"); > 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 116 goto err; > 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 117 } > 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 118 > 421b8f20d3c381 drivers/hv/hv.c Vitaly Kuznetsov 2016-12-07 119 for_each_present_cpu(cpu) { > f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 120 hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 121 > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 122 tasklet_init(&hv_cpu->msg_dpc, > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 123 vmbus_on_msg_dpc, (unsigned long) hv_cpu); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 124 > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 125 if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) { > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 126 hv_cpu->post_msg_page = (void *)get_zeroed_page(GFP_ATOMIC); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 127 if (hv_cpu->post_msg_page == NULL) { > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 128 pr_err("Unable to allocate post msg page\n"); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 129 goto err; > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 130 } > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 131 > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 @132 ret = set_memory_decrypted((unsigned long)hv_cpu->post_msg_page, 1); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 133 if (ret) { > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 134 pr_err("Failed to decrypt post msg page: %d\n", ret); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 135 /* Just leak the page, as it's unsafe to free the page. */ > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 136 hv_cpu->post_msg_page = NULL; > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 137 goto err; > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 138 } > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 139 > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 140 memset(hv_cpu->post_msg_page, 0, PAGE_SIZE); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 141 } > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 142 > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 143 /* > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 144 * Synic message and event pages are allocated by paravisor. > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 145 * Skip these pages allocation here. > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 146 */ > d3a9d7e49d1531 drivers/hv/hv.c Dexuan Cui 2023-08-24 147 if (!ms_hyperv.paravisor_present && !hv_root_partition) { > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 148 hv_cpu->synic_message_page = > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 149 (void *)get_zeroed_page(GFP_ATOMIC); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 150 if (hv_cpu->synic_message_page == NULL) { > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 151 pr_err("Unable to allocate SYNIC message page\n"); > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 152 goto err; > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 153 } > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 154 > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 155 hv_cpu->synic_event_page = > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 156 (void *)get_zeroed_page(GFP_ATOMIC); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 157 if (hv_cpu->synic_event_page == NULL) { > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 158 pr_err("Unable to allocate SYNIC event page\n"); > 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 159 > 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 160 free_page((unsigned long)hv_cpu->synic_message_page); > 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 161 hv_cpu->synic_message_page = NULL; > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 162 goto err; > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 163 } > faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 164 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 165 > 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 166 if (!ms_hyperv.paravisor_present && > e3131f1c81448a drivers/hv/hv.c Dexuan Cui 2023-08-24 167 (hv_isolation_type_snp() || hv_isolation_type_tdx())) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 168 ret = set_memory_decrypted((unsigned long) > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 169 hv_cpu->synic_message_page, 1); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 170 if (ret) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 171 pr_err("Failed to decrypt SYNIC msg page: %d\n", ret); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 172 hv_cpu->synic_message_page = NULL; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 173 > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 174 /* > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 175 * Free the event page here so that hv_synic_free() > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 176 * won't later try to re-encrypt it. > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 177 */ > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 178 free_page((unsigned long)hv_cpu->synic_event_page); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 179 hv_cpu->synic_event_page = NULL; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 180 goto err; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 181 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 182 > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 183 ret = set_memory_decrypted((unsigned long) > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 184 hv_cpu->synic_event_page, 1); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 185 if (ret) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 186 pr_err("Failed to decrypt SYNIC event page: %d\n", ret); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 187 hv_cpu->synic_event_page = NULL; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 188 goto err; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 189 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 190 > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 191 memset(hv_cpu->synic_message_page, 0, PAGE_SIZE); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 192 memset(hv_cpu->synic_event_page, 0, PAGE_SIZE); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 193 } > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 194 } > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 195 > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 196 return 0; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 197 > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 198 err: > 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 199 /* > 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 200 * Any memory allocations that succeeded will be freed when > 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 201 * the caller cleans up by calling hv_synic_free() > 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 202 */ > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 203 return ret; > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 204 } > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 205 > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 206 > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 207 void hv_synic_free(void) > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 208 { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 209 int cpu, ret; > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 210 > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 211 for_each_present_cpu(cpu) { > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 212 struct hv_per_cpu_context *hv_cpu > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 213 = per_cpu_ptr(hv_context.cpu_context, cpu); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 214 > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 215 /* It's better to leak the page if the encryption fails. */ > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 216 if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) { > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 217 if (hv_cpu->post_msg_page) { > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 @218 ret = set_memory_encrypted((unsigned long) > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 219 hv_cpu->post_msg_page, 1); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 220 if (ret) { > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 221 pr_err("Failed to encrypt post msg page: %d\n", ret); > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 222 hv_cpu->post_msg_page = NULL; > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 223 } > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 224 } > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 225 } > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 226 > 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 227 if (!ms_hyperv.paravisor_present && > e3131f1c81448a drivers/hv/hv.c Dexuan Cui 2023-08-24 228 (hv_isolation_type_snp() || hv_isolation_type_tdx())) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 229 if (hv_cpu->synic_message_page) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 230 ret = set_memory_encrypted((unsigned long) > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 231 hv_cpu->synic_message_page, 1); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 232 if (ret) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 233 pr_err("Failed to encrypt SYNIC msg page: %d\n", ret); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 234 hv_cpu->synic_message_page = NULL; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 235 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 236 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 237 > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 238 if (hv_cpu->synic_event_page) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 239 ret = set_memory_encrypted((unsigned long) > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 240 hv_cpu->synic_event_page, 1); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 241 if (ret) { > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 242 pr_err("Failed to encrypt SYNIC event page: %d\n", ret); > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 243 hv_cpu->synic_event_page = NULL; > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 244 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 245 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 246 } > 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 247 > 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 248 free_page((unsigned long)hv_cpu->post_msg_page); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 249 free_page((unsigned long)hv_cpu->synic_event_page); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 250 free_page((unsigned long)hv_cpu->synic_message_page); > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 251 } > 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 252 > 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 253 kfree(hv_context.hv_numa_map); > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 254 } > 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 255 >
On 25/04/2024 14:42, Suzuki K Poulose wrote: > On 15/04/2024 04:13, kernel test robot wrote: >> Hi Steven, >> >> kernel test robot noticed the following build errors: >> <snip> >>>> drivers/hv/channel.c:442:8: error: call to undeclared function >>>> 'set_memory_decrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 442 | ret = set_memory_decrypted((unsigned long)kbuffer, >> | ^ >>>> drivers/hv/channel.c:531:3: error: call to undeclared function >>>> 'set_memory_encrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 531 | set_memory_encrypted((unsigned long)kbuffer, >> | ^ >> drivers/hv/channel.c:848:8: error: call to undeclared function >> 'set_memory_encrypted'; ISO C99 and later do not support implicit >> function declarations [-Wimplicit-function-declaration] >> 848 | ret = set_memory_encrypted((unsigned >> long)gpadl->buffer, >> | ^ >> 5 warnings and 3 errors generated. > > Thats my mistake. The correct place for declaring set_memory_*crypted() > is asm/set_memory.h not asm/mem_encrypt.h. > > Steven, please could you fold this patch below : Sure, I've folded into my local branch. Thanks for looking into the error. Steve > > diff --git a/arch/arm64/include/asm/mem_encrypt.h > b/arch/arm64/include/asm/mem_encrypt.h > index 7381f9585321..e47265cd180a 100644 > --- a/arch/arm64/include/asm/mem_encrypt.h > +++ b/arch/arm64/include/asm/mem_encrypt.h > @@ -14,6 +14,4 @@ static inline bool force_dma_unencrypted(struct device > *dev) > return is_realm_world(); > } > > -int set_memory_encrypted(unsigned long addr, int numpages); > -int set_memory_decrypted(unsigned long addr, int numpages); > #endif > diff --git a/arch/arm64/include/asm/set_memory.h > b/arch/arm64/include/asm/set_memory.h > index 0f740b781187..9561b90fb43c 100644 > --- a/arch/arm64/include/asm/set_memory.h > +++ b/arch/arm64/include/asm/set_memory.h > @@ -14,4 +14,6 @@ int set_direct_map_invalid_noflush(struct page *page); > int set_direct_map_default_noflush(struct page *page); > bool kernel_page_present(struct page *page); > > +int set_memory_encrypted(unsigned long addr, int numpages); > +int set_memory_decrypted(unsigned long addr, int numpages); > > > > Suzuki
On 25/04/2024 14:42, Suzuki K Poulose wrote: > On 15/04/2024 04:13, kernel test robot wrote: >> Hi Steven, >> >> kernel test robot noticed the following build errors: >> >> [auto build test ERROR on arm64/for-next/core] >> [also build test ERROR on kvmarm/next efi/next tip/irq/core >> linus/master v6.9-rc3 next-20240412] >> [cannot apply to arnd-asm-generic/master] >> [If your patch is applied to the wrong git tree, kindly drop us a note. >> And when submitting patch, we suggest to use '--base' as documented in >> https://git-scm.com/docs/git-format-patch#_base_tree_information] >> >> url: >> https://github.com/intel-lab-lkp/linux/commits/Steven-Price/arm64-rsi-Add-RSI-definitions/20240412-164852 >> base: >> https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git >> for-next/core >> patch link: >> https://lore.kernel.org/r/20240412084213.1733764-10-steven.price%40arm.com >> patch subject: [PATCH v2 09/14] arm64: Enable memory encrypt for Realms >> config: arm64-allyesconfig >> (https://download.01.org/0day-ci/archive/20240415/202404151003.vkNApJiS-lkp@intel.com/config) >> compiler: clang version 19.0.0git >> (https://github.com/llvm/llvm-project >> 8b3b4a92adee40483c27f26c478a384cd69c6f05) >> reproduce (this is a W=1 build): >> (https://download.01.org/0day-ci/archive/20240415/202404151003.vkNApJiS-lkp@intel.com/reproduce) >> >> If you fix the issue in a separate patch/commit (i.e. not just a new >> version of >> the same patch/commit), kindly add following tags >> | Reported-by: kernel test robot <lkp@intel.com> >> | Closes: >> https://lore.kernel.org/oe-kbuild-all/202404151003.vkNApJiS-lkp@intel.com/ >> >> All errors (new ones prefixed by >>): >> >> In file included from drivers/hv/hv.c:13: >> In file included from include/linux/mm.h:2208: >> include/linux/vmstat.h:508:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 509 | item]; >> | ~~~~ >> include/linux/vmstat.h:515:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 516 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/vmstat.h:522:36: warning: arithmetic between >> different enumeration types ('enum node_stat_item' and 'enum >> lru_list') [-Wenum-enum-conversion] >> 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // >> skip "nr_" >> | ~~~~~~~~~~~ ^ ~~~ >> include/linux/vmstat.h:527:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 528 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/vmstat.h:536:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 537 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >>>> drivers/hv/hv.c:132:10: error: call to undeclared function >>>> 'set_memory_decrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 132 | ret = >> set_memory_decrypted((unsigned long)hv_cpu->post_msg_page, 1); >> | ^ >> drivers/hv/hv.c:168:10: error: call to undeclared function >> 'set_memory_decrypted'; ISO C99 and later do not support implicit >> function declarations [-Wimplicit-function-declaration] >> 168 | ret = >> set_memory_decrypted((unsigned long) >> | ^ >>>> drivers/hv/hv.c:218:11: error: call to undeclared function >>>> 'set_memory_encrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 218 | ret = >> set_memory_encrypted((unsigned long) >> | ^ >> drivers/hv/hv.c:230:11: error: call to undeclared function >> 'set_memory_encrypted'; ISO C99 and later do not support implicit >> function declarations [-Wimplicit-function-declaration] >> 230 | ret = >> set_memory_encrypted((unsigned long) >> | ^ >> drivers/hv/hv.c:239:11: error: call to undeclared function >> 'set_memory_encrypted'; ISO C99 and later do not support implicit >> function declarations [-Wimplicit-function-declaration] >> 239 | ret = >> set_memory_encrypted((unsigned long) >> | ^ >> 5 warnings and 5 errors generated. >> -- >> In file included from drivers/hv/connection.c:16: >> In file included from include/linux/mm.h:2208: >> include/linux/vmstat.h:508:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 509 | item]; >> | ~~~~ >> include/linux/vmstat.h:515:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 516 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/vmstat.h:522:36: warning: arithmetic between >> different enumeration types ('enum node_stat_item' and 'enum >> lru_list') [-Wenum-enum-conversion] >> 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // >> skip "nr_" >> | ~~~~~~~~~~~ ^ ~~~ >> include/linux/vmstat.h:527:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 528 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/vmstat.h:536:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 537 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >>>> drivers/hv/connection.c:236:8: error: call to undeclared function >>>> 'set_memory_decrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 236 | ret = set_memory_decrypted((unsigned long) >> | ^ >>>> drivers/hv/connection.c:340:2: error: call to undeclared function >>>> 'set_memory_encrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 340 | set_memory_encrypted((unsigned >> long)vmbus_connection.monitor_pages[0], 1); >> | ^ >> 5 warnings and 2 errors generated. >> -- >> In file included from drivers/hv/channel.c:14: >> In file included from include/linux/mm.h:2208: >> include/linux/vmstat.h:508:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 509 | item]; >> | ~~~~ >> include/linux/vmstat.h:515:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 516 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/vmstat.h:522:36: warning: arithmetic between >> different enumeration types ('enum node_stat_item' and 'enum >> lru_list') [-Wenum-enum-conversion] >> 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // >> skip "nr_" >> | ~~~~~~~~~~~ ^ ~~~ >> include/linux/vmstat.h:527:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 528 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/vmstat.h:536:43: warning: arithmetic between >> different enumeration types ('enum zone_stat_item' and 'enum >> numa_stat_item') [-Wenum-enum-conversion] >> 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~ ^ >> 537 | NR_VM_NUMA_EVENT_ITEMS + >> | ~~~~~~~~~~~~~~~~~~~~~~ >>>> drivers/hv/channel.c:442:8: error: call to undeclared function >>>> 'set_memory_decrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 442 | ret = set_memory_decrypted((unsigned long)kbuffer, >> | ^ >>>> drivers/hv/channel.c:531:3: error: call to undeclared function >>>> 'set_memory_encrypted'; ISO C99 and later do not support implicit >>>> function declarations [-Wimplicit-function-declaration] >> 531 | set_memory_encrypted((unsigned long)kbuffer, >> | ^ >> drivers/hv/channel.c:848:8: error: call to undeclared function >> 'set_memory_encrypted'; ISO C99 and later do not support implicit >> function declarations [-Wimplicit-function-declaration] >> 848 | ret = set_memory_encrypted((unsigned >> long)gpadl->buffer, >> | ^ >> 5 warnings and 3 errors generated. > > Thats my mistake. The correct place for declaring set_memory_*crypted() > is asm/set_memory.h not asm/mem_encrypt.h. > > Steven, please could you fold this patch below : > > > diff --git a/arch/arm64/include/asm/mem_encrypt.h > b/arch/arm64/include/asm/mem_encrypt.h > index 7381f9585321..e47265cd180a 100644 > --- a/arch/arm64/include/asm/mem_encrypt.h > +++ b/arch/arm64/include/asm/mem_encrypt.h > @@ -14,6 +14,4 @@ static inline bool force_dma_unencrypted(struct device > *dev) > return is_realm_world(); > } > > -int set_memory_encrypted(unsigned long addr, int numpages); > -int set_memory_decrypted(unsigned long addr, int numpages); > #endif > diff --git a/arch/arm64/include/asm/set_memory.h > b/arch/arm64/include/asm/set_memory.h > index 0f740b781187..9561b90fb43c 100644 > --- a/arch/arm64/include/asm/set_memory.h > +++ b/arch/arm64/include/asm/set_memory.h > @@ -14,4 +14,6 @@ int set_direct_map_invalid_noflush(struct page *page); > int set_direct_map_default_noflush(struct page *page); > bool kernel_page_present(struct page *page); > > +int set_memory_encrypted(unsigned long addr, int numpages); > +int set_memory_decrypted(unsigned long addr, int numpages); > > Emmanuele reports that these need to be exported as well, something like: diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index 229b6d9990f5..de3843ce2aea 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -228,11 +228,13 @@ int set_memory_encrypted(unsigned long addr, int numpages) { return __set_memory_encrypted(addr, numpages, true); } +EXPORT_SYMBOL_GPL(set_memory_encrypted); int set_memory_decrypted(unsigned long addr, int numpages) { return __set_memory_encrypted(addr, numpages, false); } +EXPORT_SYMBOL_GPL(set_memory_decrypted); #ifdef CONFIG_DEBUG_PAGEALLOC void __kernel_map_pages(struct page *page, int numpages, int enable > > Suzuki >> >> >> vim +/set_memory_decrypted +132 drivers/hv/hv.c >> >> 3e7ee4902fe699 drivers/staging/hv/Hv.c Hank Janssen 2009-07-13 96 >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 97 int hv_synic_alloc(void) >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 98 { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 99 int cpu, ret = -ENOMEM; >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 100 struct hv_per_cpu_context *hv_cpu; >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 101 >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 102 /* >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 103 * First, zero all per-cpu memory areas so hv_synic_free() can >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 104 * detect what memory has been allocated and cleanup properly >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 105 * after any failures. >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 106 */ >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 107 for_each_present_cpu(cpu) { >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 108 hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu); >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 109 memset(hv_cpu, 0, sizeof(*hv_cpu)); >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 110 } >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 111 >> 6396bb221514d2 drivers/hv/hv.c Kees Cook 2018-06-12 >> 112 hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct >> cpumask), >> 597ff72f3de850 drivers/hv/hv.c Jia-Ju Bai 2018-03-04 >> 113 GFP_KERNEL); >> 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 >> 114 if (hv_context.hv_numa_map == NULL) { >> 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 >> 115 pr_err("Unable to allocate NUMA map\n"); >> 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 >> 116 goto err; >> 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 >> 117 } >> 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 118 >> 421b8f20d3c381 drivers/hv/hv.c Vitaly Kuznetsov 2016-12-07 >> 119 for_each_present_cpu(cpu) { >> f25a7ece08bdb1 drivers/hv/hv.c Michael Kelley 2018-08-10 >> 120 hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 121 >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 122 tasklet_init(&hv_cpu->msg_dpc, >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 123 vmbus_on_msg_dpc, (unsigned long) hv_cpu); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 124 >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 125 if (ms_hyperv.paravisor_present && >> hv_isolation_type_tdx()) { >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 126 hv_cpu->post_msg_page = (void >> *)get_zeroed_page(GFP_ATOMIC); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 127 if (hv_cpu->post_msg_page == NULL) { >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 128 pr_err("Unable to allocate post msg page\n"); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 129 goto err; >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 130 } >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 131 >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> @132 ret = set_memory_decrypted((unsigned >> long)hv_cpu->post_msg_page, 1); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 133 if (ret) { >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 134 pr_err("Failed to decrypt post msg page: %d\n", >> ret); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 135 /* Just leak the page, as it's unsafe to free the >> page. */ >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 136 hv_cpu->post_msg_page = NULL; >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 137 goto err; >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 138 } >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 139 >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 140 memset(hv_cpu->post_msg_page, 0, PAGE_SIZE); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 141 } >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 142 >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 143 /* >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 144 * Synic message and event pages are allocated by paravisor. >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 145 * Skip these pages allocation here. >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 146 */ >> d3a9d7e49d1531 drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 147 if (!ms_hyperv.paravisor_present && !hv_root_partition) { >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 148 hv_cpu->synic_message_page = >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 149 (void *)get_zeroed_page(GFP_ATOMIC); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 150 if (hv_cpu->synic_message_page == NULL) { >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 151 pr_err("Unable to allocate SYNIC message page\n"); >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 152 goto err; >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 153 } >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 154 >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 155 hv_cpu->synic_event_page = >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 156 (void *)get_zeroed_page(GFP_ATOMIC); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 157 if (hv_cpu->synic_event_page == NULL) { >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 158 pr_err("Unable to allocate SYNIC event page\n"); >> 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 159 >> 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 160 free_page((unsigned >> long)hv_cpu->synic_message_page); >> 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 161 hv_cpu->synic_message_page = NULL; >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 162 goto err; >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 163 } >> faff44069ff538 drivers/hv/hv.c Tianyu Lan 2021-10-25 >> 164 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 165 >> 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 166 if (!ms_hyperv.paravisor_present && >> e3131f1c81448a drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 167 (hv_isolation_type_snp() || hv_isolation_type_tdx())) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 168 ret = set_memory_decrypted((unsigned long) >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 169 hv_cpu->synic_message_page, 1); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 170 if (ret) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 171 pr_err("Failed to decrypt SYNIC msg page: %d\n", >> ret); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 172 hv_cpu->synic_message_page = NULL; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 173 >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 174 /* >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 175 * Free the event page here so that hv_synic_free() >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 176 * won't later try to re-encrypt it. >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 177 */ >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 178 free_page((unsigned long)hv_cpu->synic_event_page); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 179 hv_cpu->synic_event_page = NULL; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 180 goto err; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 181 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 182 >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 183 ret = set_memory_decrypted((unsigned long) >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 184 hv_cpu->synic_event_page, 1); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 185 if (ret) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 186 pr_err("Failed to decrypt SYNIC event page: >> %d\n", ret); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 187 hv_cpu->synic_event_page = NULL; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 188 goto err; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 189 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 190 >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 191 memset(hv_cpu->synic_message_page, 0, PAGE_SIZE); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 192 memset(hv_cpu->synic_event_page, 0, PAGE_SIZE); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 193 } >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 194 } >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 195 >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 196 return 0; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 197 >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 198 err: >> 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 >> 199 /* >> 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 >> 200 * Any memory allocations that succeeded will be freed when >> 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 >> 201 * the caller cleans up by calling hv_synic_free() >> 572086325ce9a9 drivers/hv/hv.c Michael Kelley 2018-08-02 >> 202 */ >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 203 return ret; >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 204 } >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 205 >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 206 >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 207 void hv_synic_free(void) >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 208 { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 209 int cpu, ret; >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 210 >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 211 for_each_present_cpu(cpu) { >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 212 struct hv_per_cpu_context *hv_cpu >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 213 = per_cpu_ptr(hv_context.cpu_context, cpu); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 214 >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 215 /* It's better to leak the page if the encryption fails. */ >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 216 if (ms_hyperv.paravisor_present && >> hv_isolation_type_tdx()) { >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 217 if (hv_cpu->post_msg_page) { >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> @218 ret = set_memory_encrypted((unsigned long) >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 219 hv_cpu->post_msg_page, 1); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 220 if (ret) { >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 221 pr_err("Failed to encrypt post msg page: >> %d\n", ret); >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 222 hv_cpu->post_msg_page = NULL; >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 223 } >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 224 } >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 225 } >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 226 >> 68f2f2bc163d44 drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 227 if (!ms_hyperv.paravisor_present && >> e3131f1c81448a drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 228 (hv_isolation_type_snp() || hv_isolation_type_tdx())) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 229 if (hv_cpu->synic_message_page) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 230 ret = set_memory_encrypted((unsigned long) >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 231 hv_cpu->synic_message_page, 1); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 232 if (ret) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 233 pr_err("Failed to encrypt SYNIC msg page: >> %d\n", ret); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 234 hv_cpu->synic_message_page = NULL; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 235 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 236 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 237 >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 238 if (hv_cpu->synic_event_page) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 239 ret = set_memory_encrypted((unsigned long) >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 240 hv_cpu->synic_event_page, 1); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 241 if (ret) { >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 242 pr_err("Failed to encrypt SYNIC event page: >> %d\n", ret); >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 243 hv_cpu->synic_event_page = NULL; >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 244 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 245 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 >> 246 } >> 193061ea0a50c1 drivers/hv/hv.c Tianyu Lan 2023-08-18 247 >> 23378295042a4b drivers/hv/hv.c Dexuan Cui 2023-08-24 >> 248 free_page((unsigned long)hv_cpu->post_msg_page); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 249 free_page((unsigned long)hv_cpu->synic_event_page); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 250 free_page((unsigned long)hv_cpu->synic_message_page); >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 >> 251 } >> 37cdd991fac810 drivers/hv/hv.c Stephen Hemminger 2017-02-11 252 >> 9f01ec53458d9e drivers/hv/hv.c K. Y. Srinivasan 2015-08-05 >> 253 kfree(hv_context.hv_numa_map); >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 >> 254 } >> 2608fb65310341 drivers/hv/hv.c Jason Wang 2013-06-19 255 >> >
Hi, On 2024-04-25 05:29, Suzuki K Poulose wrote: > Emmanuele reports that these need to be exported as well, something > like: > > > diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c > index 229b6d9990f5..de3843ce2aea 100644 > --- a/arch/arm64/mm/pageattr.c > +++ b/arch/arm64/mm/pageattr.c > @@ -228,11 +228,13 @@ int set_memory_encrypted(unsigned long addr, int > numpages) > { > return __set_memory_encrypted(addr, numpages, true); > } > +EXPORT_SYMBOL_GPL(set_memory_encrypted); > > int set_memory_decrypted(unsigned long addr, int numpages) > { > return __set_memory_encrypted(addr, numpages, false); > } > +EXPORT_SYMBOL_GPL(set_memory_decrypted); > > #ifdef CONFIG_DEBUG_PAGEALLOC > void __kernel_map_pages(struct page *page, int numpages, int enable Indeed, without exporting the symbols I was getting this build failure: ERROR: modpost: "set_memory_encrypted" [drivers/hv/hv_vmbus.ko] undefined! ERROR: modpost: "set_memory_decrypted" [drivers/hv/hv_vmbus.ko] undefined! I can now build 6.9-rc1 w/ CCA guest patches if I apply Suzuki's changes: 1) move set_memory_encrypted/decrypted from asm/mem_encrypt.h to asm/set_memory.h 2) export both symbols in mm/pageattr.c See diff below. Thanks, Emanuele diff --git a/arch/arm64/include/asm/mem_encrypt.h b/arch/arm64/include/asm/mem_encrypt.h index 7381f9585321..e47265cd180a 100644 --- a/arch/arm64/include/asm/mem_encrypt.h +++ b/arch/arm64/include/asm/mem_encrypt.h @@ -14,6 +14,4 @@ static inline bool force_dma_unencrypted(struct device *dev) return is_realm_world(); } -int set_memory_encrypted(unsigned long addr, int numpages); -int set_memory_decrypted(unsigned long addr, int numpages); #endif diff --git a/arch/arm64/include/asm/set_memory.h b/arch/arm64/include/asm/set_memory.h index 0f740b781187..9561b90fb43c 100644 --- a/arch/arm64/include/asm/set_memory.h +++ b/arch/arm64/include/asm/set_memory.h @@ -14,4 +14,6 @@ int set_direct_map_invalid_noflush(struct page *page); int set_direct_map_default_noflush(struct page *page); bool kernel_page_present(struct page *page); +int set_memory_encrypted(unsigned long addr, int numpages); +int set_memory_decrypted(unsigned long addr, int numpages); #endif /* _ASM_ARM64_SET_MEMORY_H */ diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index 229b6d9990f5..de3843ce2aea 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -228,11 +228,13 @@ int set_memory_encrypted(unsigned long addr, int numpages) { return __set_memory_encrypted(addr, numpages, true); } +EXPORT_SYMBOL_GPL(set_memory_encrypted); int set_memory_decrypted(unsigned long addr, int numpages) { return __set_memory_encrypted(addr, numpages, false); } +EXPORT_SYMBOL_GPL(set_memory_decrypted); #ifdef CONFIG_DEBUG_PAGEALLOC void __kernel_map_pages(struct page *page, int numpages, int enable)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7b11c98b3e84..ffd4685a3029 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -20,6 +20,7 @@ config ARM64 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_HAS_CACHE_LINE_SIZE + select ARCH_HAS_CC_PLATFORM select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEBUG_VM_PGTABLE @@ -40,6 +41,8 @@ config ARM64 select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_SET_MEMORY + select ARCH_HAS_MEM_ENCRYPT + select ARCH_HAS_FORCE_DMA_UNENCRYPTED select ARCH_STACKWALK select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX diff --git a/arch/arm64/include/asm/mem_encrypt.h b/arch/arm64/include/asm/mem_encrypt.h new file mode 100644 index 000000000000..7381f9585321 --- /dev/null +++ b/arch/arm64/include/asm/mem_encrypt.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 ARM Ltd. + */ + +#ifndef __ASM_MEM_ENCRYPT_H +#define __ASM_MEM_ENCRYPT_H + +#include <asm/rsi.h> + +/* All DMA must be to non-secure memory for now */ +static inline bool force_dma_unencrypted(struct device *dev) +{ + return is_realm_world(); +} + +int set_memory_encrypted(unsigned long addr, int numpages); +int set_memory_decrypted(unsigned long addr, int numpages); +#endif diff --git a/arch/arm64/kernel/rsi.c b/arch/arm64/kernel/rsi.c index 5c8ed3aaa35f..ba3f346e7a91 100644 --- a/arch/arm64/kernel/rsi.c +++ b/arch/arm64/kernel/rsi.c @@ -6,6 +6,7 @@ #include <linux/jump_label.h> #include <linux/memblock.h> #include <linux/swiotlb.h> +#include <linux/cc_platform.h> #include <asm/rsi.h> @@ -19,6 +20,17 @@ unsigned int phys_mask_shift = CONFIG_ARM64_PA_BITS; DEFINE_STATIC_KEY_FALSE_RO(rsi_present); EXPORT_SYMBOL(rsi_present); +bool cc_platform_has(enum cc_attr attr) +{ + switch (attr) { + case CC_ATTR_MEM_ENCRYPT: + return is_realm_world(); + default: + return false; + } +} +EXPORT_SYMBOL_GPL(cc_platform_has); + static bool rsi_version_matches(void) { unsigned long ver; diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index 0c4e3ecf989d..229b6d9990f5 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -5,10 +5,12 @@ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/module.h> +#include <linux/mem_encrypt.h> #include <linux/sched.h> #include <linux/vmalloc.h> #include <asm/cacheflush.h> +#include <asm/pgtable-prot.h> #include <asm/set_memory.h> #include <asm/tlbflush.h> #include <asm/kfence.h> @@ -23,14 +25,16 @@ bool rodata_full __ro_after_init = IS_ENABLED(CONFIG_RODATA_FULL_DEFAULT_ENABLED bool can_set_direct_map(void) { /* - * rodata_full and DEBUG_PAGEALLOC require linear map to be - * mapped at page granularity, so that it is possible to + * rodata_full, DEBUG_PAGEALLOC and a Realm guest all require linear + * map to be mapped at page granularity, so that it is possible to * protect/unprotect single pages. * * KFENCE pool requires page-granular mapping if initialized late. + * + * Realms need to make pages shared/protected at page granularity. */ return rodata_full || debug_pagealloc_enabled() || - arm64_kfence_can_set_direct_map(); + arm64_kfence_can_set_direct_map() || is_realm_world(); } static int change_page_range(pte_t *ptep, unsigned long addr, void *data) @@ -41,6 +45,7 @@ static int change_page_range(pte_t *ptep, unsigned long addr, void *data) pte = clear_pte_bit(pte, cdata->clear_mask); pte = set_pte_bit(pte, cdata->set_mask); + /* TODO: Break before make for PROT_NS_SHARED updates */ __set_pte(ptep, pte); return 0; } @@ -192,6 +197,43 @@ int set_direct_map_default_noflush(struct page *page) PAGE_SIZE, change_page_range, &data); } +static int __set_memory_encrypted(unsigned long addr, + int numpages, + bool encrypt) +{ + unsigned long set_prot = 0, clear_prot = 0; + phys_addr_t start, end; + + if (!is_realm_world()) + return 0; + + WARN_ON(!__is_lm_address(addr)); + start = __virt_to_phys(addr); + end = start + numpages * PAGE_SIZE; + + if (encrypt) { + clear_prot = PROT_NS_SHARED; + set_memory_range_protected(start, end); + } else { + set_prot = PROT_NS_SHARED; + set_memory_range_shared(start, end); + } + + return __change_memory_common(addr, PAGE_SIZE * numpages, + __pgprot(set_prot), + __pgprot(clear_prot)); +} + +int set_memory_encrypted(unsigned long addr, int numpages) +{ + return __set_memory_encrypted(addr, numpages, true); +} + +int set_memory_decrypted(unsigned long addr, int numpages) +{ + return __set_memory_encrypted(addr, numpages, false); +} + #ifdef CONFIG_DEBUG_PAGEALLOC void __kernel_map_pages(struct page *page, int numpages, int enable) {