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From: Tianyu Lan <ltykernel@gmail.com>
To: luto@kernel.org, tglx@linutronix.de, mingo@redhat.com,
	bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
	hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com,
	jgross@suse.com, tiala@microsoft.com, kirill@shutemov.name,
	jiangshan.ljs@antgroup.com, peterz@infradead.org,
	ashish.kalra@amd.com, srutherford@google.com,
	akpm@linux-foundation.org, anshuman.khandual@arm.com,
	pawan.kumar.gupta@linux.intel.com, adrian.hunter@intel.com,
	daniel.sneddon@linux.intel.com,
	alexander.shishkin@linux.intel.com, sandipan.das@amd.com,
	ray.huang@amd.com, brijesh.singh@amd.com, michael.roth@amd.com,
	thomas.lendacky@amd.com, venu.busireddy@oracle.com,
	sterritt@google.com, tony.luck@intel.com,
	samitolvanen@google.com, fenghua.yu@intel.com
Cc: pangupta@amd.com, linux-kernel@vger.kernel.org,
	kvm@vger.kernel.org, linux-hyperv@vger.kernel.org,
	linux-arch@vger.kernel.org
Subject: [RFC PATCH V4 05/17] clocksource/drivers/hyper-v: decrypt hyperv tsc page in sev-snp enlightened guest
Date: Mon,  3 Apr 2023 13:43:53 -0400	[thread overview]
Message-ID: <20230403174406.4180472-6-ltykernel@gmail.com> (raw)
In-Reply-To: <20230403174406.4180472-1-ltykernel@gmail.com>

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(-)

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;
-- 
2.25.1


  parent reply	other threads:[~2023-04-03 17:44 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-03 17:43 [RFC PATCH V4 00/17] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 01/17] x86/hyperv: Add sev-snp enlightened guest static key Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 02/17] Drivers: hv: vmbus: Decrypt vmbus ring buffer Tianyu Lan
2023-04-12 14:07   ` Michael Kelley (LINUX)
2023-04-03 17:43 ` [RFC PATCH V4 03/17] x86/hyperv: Set Virtual Trust Level in VMBus init message Tianyu Lan
2023-04-12 14:24   ` Michael Kelley (LINUX)
2023-04-13  3:29     ` Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 04/17] x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp enlightened guest Tianyu Lan
2023-04-03 17:43 ` Tianyu Lan [this message]
2023-04-03 17:43 ` [RFC PATCH V4 06/17] x86/hyperv: decrypt VMBus pages for " Tianyu Lan
2023-04-12 14:32   ` Michael Kelley (LINUX)
2023-04-14  4:40     ` Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 07/17] drivers: hv: Decrypt percpu hvcall input arg page in " Tianyu Lan
2023-04-12 14:34   ` Michael Kelley (LINUX)
2023-04-03 17:43 ` [RFC PATCH V4 08/17] x86/hyperv: Initialize cpu and memory for " Tianyu Lan
2023-04-12 14:39   ` Michael Kelley (LINUX)
2023-04-16  7:21     ` Tianyu Lan
2023-04-17 12:49       ` Michael Kelley (LINUX)
2023-04-18 14:12         ` Tianyu Lan
2023-04-16  7:23     ` sky free
2023-04-12 15:53   ` Dave Hansen
2023-04-18 13:24     ` Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 09/17] x86/hyperv: SEV-SNP enlightened guest don't support legacy rtc Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 10/17] x86/hyperv: Add smp support for sev-snp guest Tianyu Lan
2023-04-12 14:59   ` Michael Kelley (LINUX)
2023-04-14 16:22     ` Tianyu Lan
2023-04-03 17:43 ` [RFC PATCH V4 11/17] x86/hyperv: Add hyperv-specific handling for VMMCALL under SEV-ES Tianyu Lan
2023-04-03 17:44 ` [RFC PATCH V4 12/17] x86/sev: Add a #HV exception handler Tianyu Lan
2023-04-03 18:06   ` Borislav Petkov
2023-04-03 17:44 ` [RFC PATCH V4 13/17] x86/sev: Add Check of #HV event in path Tianyu Lan
2023-04-14 11:02   ` Pankaj Gupta
2023-04-14 16:32     ` Tianyu Lan
2023-04-17  8:14       ` Pankaj Gupta
2023-04-18 14:01   ` Gupta, Pankaj
2023-04-03 17:44 ` [RFC PATCH V4 14/17] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv Tianyu Lan
2023-04-05  5:43   ` Gupta, Pankaj
2023-04-16  7:21     ` Tianyu Lan
2023-04-12 15:02   ` Michael Kelley (LINUX)
2023-04-16  7:37     ` Tianyu Lan
2023-04-03 17:44 ` [RFC PATCH V4 15/17] x86/sev: optimize system vector processing invoked from #HV exception Tianyu Lan
2023-04-03 17:44 ` [RFC PATCH V4 16/17] x86/sev: Fix interrupt exit code paths " Tianyu Lan
2023-04-03 17:44 ` [RFC PATCH V4 17/17] x86/sev: Remove restrict interrupt injection from SNP_FEATURES_IMPL_REQ Tianyu Lan
2023-04-04 12:25   ` Gupta, Pankaj
2023-04-04 13:22     ` Tianyu Lan

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