| Message ID | 20220721130419.1904711-3-chenhuacai@loongson.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mm/sparse-vmemmap: Generalise helpers and enable for LoongArch | expand |
Hi Huacai,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on soc/for-next]
[also build test ERROR on linus/master v5.19-rc7 next-20220722]
[cannot apply to akpm-mm/mm-everything tip/x86/mm]
[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/Huacai-Chen/mm-sparse-vmemmap-Generalise-helpers-and-enable-for-LoongArch/20220721-211006
base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20220724/202207241100.dTmn1Js6-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/46a065b827f834b046cffafc7fa165b6fadd9c5c
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Huacai-Chen/mm-sparse-vmemmap-Generalise-helpers-and-enable-for-LoongArch/20220721-211006
git checkout 46a065b827f834b046cffafc7fa165b6fadd9c5c
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
fs/proc/meminfo.c:22:28: warning: no previous prototype for 'arch_report_meminfo' [-Wmissing-prototypes]
22 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
| ^~~~~~~~~~~~~~~~~~~
In file included from arch/loongarch/include/asm/uaccess.h:17,
from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from fs/proc/meminfo.c:2:
fs/proc/meminfo.c: In function 'meminfo_proc_show':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
include/linux/vmalloc.h:286:24: note: in expansion of macro 'VMALLOC_END'
286 | #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
| ^~~~~~~~~~~
fs/proc/meminfo.c:127:35: note: in expansion of macro 'VMALLOC_TOTAL'
127 | (unsigned long)VMALLOC_TOTAL >> 10);
| ^~~~~~~~~~~~~
arch/loongarch/include/asm/pgtable.h:95:119: note: each undeclared identifier is reported only once for each function it appears in
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
include/linux/vmalloc.h:286:24: note: in expansion of macro 'VMALLOC_END'
286 | #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
| ^~~~~~~~~~~
fs/proc/meminfo.c:127:35: note: in expansion of macro 'VMALLOC_TOTAL'
127 | (unsigned long)VMALLOC_TOTAL >> 10);
| ^~~~~~~~~~~~~
--
In file included from include/linux/pgtable.h:6,
from include/linux/mm.h:29,
from mm/util.c:2:
mm/util.c: In function 'kvmalloc_node':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/util.c:634:61: note: in expansion of macro 'VMALLOC_END'
634 | return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
arch/loongarch/include/asm/pgtable.h:95:119: note: each undeclared identifier is reported only once for each function it appears in
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/util.c:634:61: note: in expansion of macro 'VMALLOC_END'
634 | return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/util.c:637:1: error: control reaches end of non-void function [-Werror=return-type]
637 | }
| ^
cc1: some warnings being treated as errors
--
In file included from include/linux/pgtable.h:6,
from include/linux/mm.h:29,
from mm/vmalloc.c:12:
mm/vmalloc.c: In function 'is_vmalloc_addr':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:79:48: note: in expansion of macro 'VMALLOC_END'
79 | return addr >= VMALLOC_START && addr < VMALLOC_END;
| ^~~~~~~~~~~
arch/loongarch/include/asm/pgtable.h:95:119: note: each undeclared identifier is reported only once for each function it appears in
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:79:48: note: in expansion of macro 'VMALLOC_END'
79 | return addr >= VMALLOC_START && addr < VMALLOC_END;
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'new_vmap_block':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:1915:56: note: in expansion of macro 'VMALLOC_END'
1915 | VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
In file included from include/linux/build_bug.h:5,
from include/linux/container_of.h:5,
from include/linux/list.h:5,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:55,
from include/linux/vmalloc.h:5,
from mm/vmalloc.c:11:
mm/vmalloc.c: In function 'vm_unmap_ram':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
include/linux/compiler.h:78:45: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
mm/vmalloc.c:2166:9: note: in expansion of macro 'BUG_ON'
2166 | BUG_ON(addr > VMALLOC_END);
| ^~~~~~
mm/vmalloc.c:2166:23: note: in expansion of macro 'VMALLOC_END'
2166 | BUG_ON(addr > VMALLOC_END);
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'vm_map_ram':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:2213:48: note: in expansion of macro 'VMALLOC_END'
2213 | VMALLOC_START, VMALLOC_END, node, GFP_KERNEL);
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'vm_area_register_early':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
include/linux/compiler.h:78:45: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
mm/vmalloc.c:2309:9: note: in expansion of macro 'BUG_ON'
2309 | BUG_ON(addr > VMALLOC_END - vm->size);
| ^~~~~~
mm/vmalloc.c:2309:23: note: in expansion of macro 'VMALLOC_END'
2309 | BUG_ON(addr > VMALLOC_END - vm->size);
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'get_vm_area':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:2498:50: note: in expansion of macro 'VMALLOC_END'
2498 | VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'get_vm_area_caller':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:2507:50: note: in expansion of macro 'VMALLOC_END'
2507 | VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/vmalloc.c: In function '__vmalloc_node':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:3230:65: note: in expansion of macro 'VMALLOC_END'
3230 | return __vmalloc_node_range(size, align, VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'vmalloc_huge':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:3282:61: note: in expansion of macro 'VMALLOC_END'
3282 | return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'vmalloc_user':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:3319:67: note: in expansion of macro 'VMALLOC_END'
3319 | return __vmalloc_node_range(size, SHMLBA, VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'vmalloc_32_user':
>> arch/loongarch/include/asm/pgtable.h:95:119: error: 'VMEMMAP_SIZE' undeclared (first use in this function); did you mean 'VMEMMAP_END'?
95 | min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
| ^~~~~~~~~~~~
mm/vmalloc.c:3403:67: note: in expansion of macro 'VMALLOC_END'
3403 | return __vmalloc_node_range(size, SHMLBA, VMALLOC_START, VMALLOC_END,
| ^~~~~~~~~~~
mm/vmalloc.c: In function 'is_vmalloc_addr':
mm/vmalloc.c:80:1: error: control reaches end of non-void function [-Werror=return-type]
80 | }
| ^
mm/vmalloc.c: In function 'get_vm_area':
mm/vmalloc.c:2501:1: error: control reaches end of non-void function [-Werror=return-type]
2501 | }
| ^
mm/vmalloc.c: In function 'get_vm_area_caller':
mm/vmalloc.c:2509:1: error: control reaches end of non-void function [-Werror=return-type]
2509 | }
| ^
mm/vmalloc.c: In function '__vmalloc_node':
mm/vmalloc.c:3232:1: error: control reaches end of non-void function [-Werror=return-type]
3232 | }
| ^
mm/vmalloc.c: In function 'vmalloc_huge':
mm/vmalloc.c:3285:1: error: control reaches end of non-void function [-Werror=return-type]
3285 | }
| ^
mm/vmalloc.c: In function 'vmalloc_user':
mm/vmalloc.c:3323:1: error: control reaches end of non-void function [-Werror=return-type]
3323 | }
| ^
mm/vmalloc.c: In function 'vmalloc_32_user':
mm/vmalloc.c:3407:1: error: control reaches end of non-void function [-Werror=return-type]
3407 | }
| ^
cc1: some warnings being treated as errors
vim +95 arch/loongarch/include/asm/pgtable.h
91
92 #define VMALLOC_START MODULES_END
93 #define VMALLOC_END \
94 (vm_map_base + \
> 95 min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE)
96
Hi Huacai,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on soc/for-next]
[also build test ERROR on kvm/queue arm64/for-next/core linus/master v5.19-rc7 next-20220722]
[cannot apply to akpm-mm/mm-everything tip/x86/mm]
[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/Huacai-Chen/mm-sparse-vmemmap-Generalise-helpers-and-enable-for-LoongArch/20220721-211006
base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
config: nios2-allnoconfig (https://download.01.org/0day-ci/archive/20220724/202207241246.ZV8cRK1g-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/46a065b827f834b046cffafc7fa165b6fadd9c5c
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Huacai-Chen/mm-sparse-vmemmap-Generalise-helpers-and-enable-for-LoongArch/20220721-211006
git checkout 46a065b827f834b046cffafc7fa165b6fadd9c5c
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from kernel/fork.c:102:
>> arch/nios2/include/asm/pgalloc.h:32:13: error: conflicting types for 'pmd_init'; have 'void(long unsigned int, long unsigned int)'
32 | extern void pmd_init(unsigned long page, unsigned long pagetable);
| ^~~~~~~~
In file included from include/linux/pid_namespace.h:7,
from include/linux/ptrace.h:10,
from arch/nios2/include/uapi/asm/elf.h:24,
from arch/nios2/include/asm/elf.h:9,
from include/linux/elf.h:6,
from include/linux/module.h:19,
from kernel/fork.c:30:
include/linux/mm.h:3206:6: note: previous declaration of 'pmd_init' with type 'void(void *)'
3206 | void pmd_init(void *addr);
| ^~~~~~~~
kernel/fork.c:163:13: warning: no previous prototype for 'arch_release_task_struct' [-Wmissing-prototypes]
163 | void __weak arch_release_task_struct(struct task_struct *tsk)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/fork.c:852:20: warning: no previous prototype for 'arch_task_cache_init' [-Wmissing-prototypes]
852 | void __init __weak arch_task_cache_init(void) { }
| ^~~~~~~~~~~~~~~~~~~~
kernel/fork.c:947:12: warning: no previous prototype for 'arch_dup_task_struct' [-Wmissing-prototypes]
947 | int __weak arch_dup_task_struct(struct task_struct *dst,
| ^~~~~~~~~~~~~~~~~~~~
--
In file included from mm/filemap.c:45:
>> arch/nios2/include/asm/pgalloc.h:32:13: error: conflicting types for 'pmd_init'; have 'void(long unsigned int, long unsigned int)'
32 | extern void pmd_init(unsigned long page, unsigned long pagetable);
| ^~~~~~~~
In file included from include/linux/dax.h:6,
from mm/filemap.c:15:
include/linux/mm.h:3206:6: note: previous declaration of 'pmd_init' with type 'void(void *)'
3206 | void pmd_init(void *addr);
| ^~~~~~~~
vim +32 arch/nios2/include/asm/pgalloc.h
cbd15b3fadc27e Ley Foon Tan 2014-11-06 28
cbd15b3fadc27e Ley Foon Tan 2014-11-06 29 /*
cbd15b3fadc27e Ley Foon Tan 2014-11-06 30 * Initialize a new pmd table with invalid pointers.
cbd15b3fadc27e Ley Foon Tan 2014-11-06 31 */
cbd15b3fadc27e Ley Foon Tan 2014-11-06 @32 extern void pmd_init(unsigned long page, unsigned long pagetable);
cbd15b3fadc27e Ley Foon Tan 2014-11-06 33
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 516a4ebbd97e..f3ff806317ac 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -418,6 +418,7 @@ config ARCH_FLATMEM_ENABLE config ARCH_SPARSEMEM_ENABLE def_bool y + select SPARSEMEM_VMEMMAP_ENABLE help Say Y to support efficient handling of sparse physical memory, for architectures which are either NUMA (Non-Uniform Memory Access) diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h index 9c811c3f7572..b701ec7a0309 100644 --- a/arch/loongarch/include/asm/pgtable.h +++ b/arch/loongarch/include/asm/pgtable.h @@ -92,7 +92,10 @@ extern unsigned long zero_page_mask; #define VMALLOC_START MODULES_END #define VMALLOC_END \ (vm_map_base + \ - min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE) + min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits)) - PMD_SIZE - VMEMMAP_SIZE) + +#define vmemmap ((struct page *)((VMALLOC_END + PMD_SIZE) & PMD_MASK)) +#define VMEMMAP_END ((unsigned long)vmemmap + VMEMMAP_SIZE - 1) #define pte_ERROR(e) \ pr_err("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e)) diff --git a/arch/loongarch/include/asm/sparsemem.h b/arch/loongarch/include/asm/sparsemem.h index 3d18cdf1b069..a1e440f6bec7 100644 --- a/arch/loongarch/include/asm/sparsemem.h +++ b/arch/loongarch/include/asm/sparsemem.h @@ -11,6 +11,14 @@ #define SECTION_SIZE_BITS 29 /* 2^29 = Largest Huge Page Size */ #define MAX_PHYSMEM_BITS 48 +#ifndef CONFIG_SPARSEMEM_VMEMMAP +#define VMEMMAP_SIZE 0 +#else +#define VMEMMAP_SIZE (sizeof(struct page) * (1UL << (cpu_pabits + 1 - PAGE_SHIFT))) +#endif + +#include <linux/mm_types.h> + #endif /* CONFIG_SPARSEMEM */ #ifdef CONFIG_MEMORY_HOTPLUG diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c index 7094a68c9b83..35128229fe46 100644 --- a/arch/loongarch/mm/init.c +++ b/arch/loongarch/mm/init.c @@ -22,7 +22,7 @@ #include <linux/pfn.h> #include <linux/hardirq.h> #include <linux/gfp.h> -#include <linux/initrd.h> +#include <linux/hugetlb.h> #include <linux/mmzone.h> #include <asm/asm-offsets.h> @@ -157,6 +157,75 @@ void arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap) #endif #endif +#ifdef CONFIG_SPARSEMEM_VMEMMAP +int __meminit vmemmap_populate_hugepages(unsigned long start, unsigned long end, + int node, struct vmem_altmap *altmap) +{ + unsigned long addr = start; + unsigned long next; + pgd_t *pgd; + p4d_t *p4d; + pud_t *pud; + pmd_t *pmd; + + for (addr = start; addr < end; addr = next) { + next = pmd_addr_end(addr, end); + + pgd = vmemmap_pgd_populate(addr, node); + if (!pgd) + return -ENOMEM; + p4d = vmemmap_p4d_populate(pgd, addr, node); + if (!p4d) + return -ENOMEM; + pud = vmemmap_pud_populate(p4d, addr, node); + if (!pud) + return -ENOMEM; + + pmd = pmd_offset(pud, addr); + if (pmd_none(*pmd)) { + void *p = NULL; + + p = vmemmap_alloc_block_buf(PMD_SIZE, node, NULL); + if (p) { + pmd_t entry; + + entry = pfn_pmd(virt_to_pfn(p), PAGE_KERNEL); + pmd_val(entry) |= _PAGE_HUGE | _PAGE_HGLOBAL; + set_pmd_at(&init_mm, addr, pmd, entry); + + continue; + } + } else if (pmd_val(*pmd) & _PAGE_HUGE) { + vmemmap_verify((pte_t *)pmd, node, addr, next); + continue; + } + if (vmemmap_populate_basepages(addr, next, node, NULL)) + return -ENOMEM; + } + + return 0; +} + +#if CONFIG_PGTABLE_LEVELS == 2 +int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, + struct vmem_altmap *altmap) +{ + return vmemmap_populate_basepages(start, end, node, NULL); +} +#else +int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, + struct vmem_altmap *altmap) +{ + return vmemmap_populate_hugepages(start, end, node, NULL); +} +#endif + +void vmemmap_free(unsigned long start, unsigned long end, + struct vmem_altmap *altmap) +{ +} +#endif + /* * Align swapper_pg_dir in to 64K, allows its address to be loaded * with a single LUI instruction in the TLB handlers. If we used diff --git a/include/linux/mm.h b/include/linux/mm.h index cf3d0d673f6b..f6ed6bc0a65f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3203,6 +3203,8 @@ void *sparse_buffer_alloc(unsigned long size); struct page * __populate_section_memmap(unsigned long pfn, unsigned long nr_pages, int nid, struct vmem_altmap *altmap, struct dev_pagemap *pgmap); +void pmd_init(void *addr); +void pud_init(void *addr); pgd_t *vmemmap_pgd_populate(unsigned long addr, int node); p4d_t *vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node); pud_t *vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node); diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index dbbd1a7e65f3..0abcb0a5f1b5 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -595,6 +595,10 @@ pmd_t * __meminit vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node) return pmd; } +void __weak __meminit pmd_init(void *addr) +{ +} + pud_t * __meminit vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node) { pud_t *pud = pud_offset(p4d, addr); @@ -602,11 +606,16 @@ pud_t * __meminit vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node) void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node); if (!p) return NULL; + pmd_init(p); pud_populate(&init_mm, pud, p); } return pud; } +void __weak __meminit pud_init(void *addr) +{ +} + p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node) { p4d_t *p4d = p4d_offset(pgd, addr); @@ -614,6 +623,7 @@ p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node) void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node); if (!p) return NULL; + pud_init(p); p4d_populate(&init_mm, p4d, p); } return p4d;