diff mbox series

[RFC,V4,05/17] clocksource/drivers/hyper-v: decrypt hyperv tsc page in sev-snp enlightened guest

Message ID 20230403174406.4180472-6-ltykernel@gmail.com (mailing list archive)
State New, archived
Headers show
Series x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv | expand

Commit Message

Tianyu Lan April 3, 2023, 5:43 p.m. UTC 
From: Tianyu Lan <tiala@microsoft.com>

Hyper-V tsc page is shared with hypervisor and it should
be decrypted in sev-snp enlightened guest when it's used.

Signed-off-by: Tianyu Lan <tiala@microsoft.com>
---
Change since RFC V2:
       * Change the Subject line prefix
---
 drivers/clocksource/hyperv_timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c
index c0cef92b12b8..44da16ca203c 100644
--- a/drivers/clocksource/hyperv_timer.c
+++ b/drivers/clocksource/hyperv_timer.c
@@ -365,7 +365,7 @@  EXPORT_SYMBOL_GPL(hv_stimer_global_cleanup);
 static union {
 	struct ms_hyperv_tsc_page page;
 	u8 reserved[PAGE_SIZE];
-} tsc_pg __aligned(PAGE_SIZE);
+} tsc_pg __bss_decrypted __aligned(PAGE_SIZE);
 
 static struct ms_hyperv_tsc_page *tsc_page = &tsc_pg.page;
 static unsigned long tsc_pfn;