From: Tianyu Lan <ltykernel@gmail.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
hpa@zytor.com, daniel.lezcano@linaro.org, arnd@arndb.de,
michael.h.kelley@microsoft.com
Cc: Tianyu Lan <tiala@microsoft.com>,
linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-kernel@vger.kernel.org, vkuznets@redhat.com,
Michael Kelley <mikelley@microsoft.com>
Subject: [PATCH V3 6/9] clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest
Date: Mon, 17 Jul 2023 23:23:00 -0400 [thread overview]
Message-ID: <20230718032304.136888-7-ltykernel@gmail.com> (raw)
In-Reply-To: <20230718032304.136888-1-ltykernel@gmail.com>
From: Tianyu Lan <tiala@microsoft.com>
Hyper-V tsc page is shared with hypervisor and mark the page
unencrypted in sev-snp enlightened guest when it's used.
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
---
drivers/clocksource/hyperv_timer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c
index e56307a81f4d..8ff7cd4e20bb 100644
--- a/drivers/clocksource/hyperv_timer.c
+++ b/drivers/clocksource/hyperv_timer.c
@@ -390,7 +390,7 @@ static __always_inline u64 read_hv_clock_msr(void)
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;
--
2.25.1
next prev parent reply other threads:[~2023-07-18 3:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-18 3:22 [PATCH V3 0/9] x86/hyperv: Add AMD sev-snp enlightened guest support on hyperv Tianyu Lan
2023-07-18 3:22 ` [PATCH V3 1/9] x86/hyperv: Add sev-snp enlightened guest static key Tianyu Lan
2023-07-26 3:26 ` Michael Kelley (LINUX)
2023-07-18 3:22 ` [PATCH V3 2/9] x86/hyperv: Set Virtual Trust Level in VMBus init message Tianyu Lan
2023-07-26 3:28 ` Michael Kelley (LINUX)
2023-07-18 3:22 ` [PATCH V3 3/9] x86/hyperv: Mark Hyper-V vp assist page unencrypted in SEV-SNP enlightened guest Tianyu Lan
2023-07-18 3:22 ` [PATCH V3 4/9] drivers: hv: Mark percpu hvcall input arg " Tianyu Lan
2023-07-18 3:22 ` [PATCH V3 5/9] x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp " Tianyu Lan
2023-07-26 3:44 ` Michael Kelley (LINUX)
2023-07-26 13:47 ` Tianyu Lan
2023-07-26 14:29 ` Michael Kelley (LINUX)
2023-07-28 10:45 ` Tianyu Lan
2023-07-18 3:23 ` Tianyu Lan [this message]
2023-07-18 3:23 ` [PATCH V3 7/9] x86/hyperv: Initialize cpu and memory for SEV-SNP " Tianyu Lan
2023-07-26 4:26 ` Jinank Jain
2023-07-26 14:15 ` Tianyu Lan
2023-07-18 3:23 ` [PATCH V3 8/9] x86/hyperv: Add smp support for SEV-SNP guest Tianyu Lan
2023-07-18 3:23 ` [PATCH V3 9/9] x86/hyperv: Add hyperv-specific handling for VMMCALL under SEV-ES Tianyu Lan
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