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 V5 02/15] x86/hyperv: Decrypt hv vp assist page in sev-snp enlightened guest
Date: Mon, 1 May 2023 04:57:12 -0400 [thread overview]
Message-ID: <20230501085726.544209-3-ltykernel@gmail.com> (raw)
In-Reply-To: <20230501085726.544209-1-ltykernel@gmail.com>
From: Tianyu Lan <tiala@microsoft.com>
hv vp assist page is shared between sev snp guest and hyperv. Decrypt
the page when use it.
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
---
arch/x86/hyperv/hv_init.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index a5f9474f08e1..9f3e2d71d015 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -18,6 +18,7 @@
#include <asm/hyperv-tlfs.h>
#include <asm/mshyperv.h>
#include <asm/idtentry.h>
+#include <asm/set_memory.h>
#include <linux/kexec.h>
#include <linux/version.h>
#include <linux/vmalloc.h>
@@ -113,6 +114,11 @@ static int hv_cpu_init(unsigned int cpu)
}
if (!WARN_ON(!(*hvp))) {
+ if (hv_isolation_type_en_snp()) {
+ WARN_ON_ONCE(set_memory_decrypted((unsigned long)(*hvp), 1));
+ memset(*hvp, 0, PAGE_SIZE);
+ }
+
msr.enable = 1;
wrmsrl(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64);
}
--
2.25.1
next prev parent reply other threads:[~2023-05-01 8:57 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-01 8:57 [RFC PATCH V5 00/15] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 01/15] x86/hyperv: Add sev-snp enlightened guest static key Tianyu Lan
2023-05-01 8:57 ` Tianyu Lan [this message]
2023-05-01 15:10 ` [RFC PATCH V5 02/15] x86/hyperv: Decrypt hv vp assist page in sev-snp enlightened guest Tom Lendacky
2023-05-01 8:57 ` [RFC PATCH V5 03/15] x86/hyperv: Set Virtual Trust Level in VMBus init message Tianyu Lan
2023-05-02 19:30 ` Zhi Wang
2023-05-04 15:38 ` Tianyu Lan
2023-05-04 15:58 ` Zhi Wang
2023-05-01 8:57 ` [RFC PATCH V5 04/15] x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp enlightened guest Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 05/15] clocksource/drivers/hyper-v: decrypt hyperv tsc page " Tianyu Lan
2023-05-04 16:54 ` Zhi Wang
2023-05-01 8:57 ` [RFC PATCH V5 06/15] hv: vmbus: decrypt VMBus pages for " Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 07/15] drivers: hv: Decrypt percpu hvcall input arg page in " Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 08/15] x86/hyperv: Initialize cpu and memory for " Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 09/15] x86/hyperv: Add smp support for sev-snp guest Tianyu Lan
2023-05-01 10:20 ` [EXTERNAL] " Saurabh Singh Sengar
2023-05-04 15:55 ` Tianyu Lan
2023-05-01 10:32 ` Saurabh Singh Sengar
2023-05-01 15:46 ` Tom Lendacky
2023-05-04 15:51 ` Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 10/15] x86/hyperv: Add hyperv-specific handling for VMMCALL under SEV-ES Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 11/15] x86/sev: Add a #HV exception handler Tianyu Lan
2023-05-05 10:59 ` Gupta, Pankaj
2023-05-11 13:25 ` Gupta, Pankaj
2023-05-01 8:57 ` [RFC PATCH V5 12/15] x86/sev: Add Check of #HV event in path Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 13/15] x86/sev: Add AMD sev-snp enlightened guest support on hyperv Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 14/15] x86/sev: optimize system vector processing invoked from #HV exception Tianyu Lan
2023-05-01 8:57 ` [RFC PATCH V5 15/15] x86/sev: Fix interrupt exit code paths " Tianyu Lan
2023-05-01 16:02 ` Tom Lendacky
2023-05-04 22:41 ` Tianyu Lan
2023-05-01 16:05 ` [RFC PATCH V5 00/15] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv Tom Lendacky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230501085726.544209-3-ltykernel@gmail.com \
--to=ltykernel@gmail.com \
--cc=adrian.hunter@intel.com \
--cc=akpm@linux-foundation.org \
--cc=alexander.shishkin@linux.intel.com \
--cc=anshuman.khandual@arm.com \
--cc=ashish.kalra@amd.com \
--cc=bp@alien8.de \
--cc=brijesh.singh@amd.com \
--cc=daniel.sneddon@linux.intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=fenghua.yu@intel.com \
--cc=hpa@zytor.com \
--cc=jgross@suse.com \
--cc=jiangshan.ljs@antgroup.com \
--cc=kirill@shutemov.name \
--cc=kvm@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=michael.roth@amd.com \
--cc=mingo@redhat.com \
--cc=pangupta@amd.com \
--cc=pawan.kumar.gupta@linux.intel.com \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=ray.huang@amd.com \
--cc=samitolvanen@google.com \
--cc=sandipan.das@amd.com \
--cc=seanjc@google.com \
--cc=srutherford@google.com \
--cc=sterritt@google.com \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=tiala@microsoft.com \
--cc=tony.luck@intel.com \
--cc=venu.busireddy@oracle.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).