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clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest

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Hyper-V tsc page is shared with hypervisor and mark the page
unencrypted in sev-snp enlightened guest when it's used.

Reviewed-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20230818102919.1318039-7-ltykernel@gmail.com
This commit is contained in:
Tianyu Lan
2023-08-18 06:29:16 -04:00
committed by Wei Liu
parent 48b1f68372
commit 45f46b1ac9
1 changed files with 1 additions and 1 deletions
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2
drivers/clocksource/hyperv_timer.c
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@@ -390,7 +390,7 @@ static __always_inline u64 read_hv_clock_msr(void)
static union { static union {
struct ms_hyperv_tsc_page page; struct ms_hyperv_tsc_page page;
u8 reserved[PAGE_SIZE]; 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 struct ms_hyperv_tsc_page *tsc_page = &tsc_pg.page;
static unsigned long tsc_pfn; static unsigned long tsc_pfn;