From: Sean Christopherson <seanjc@google.com>
To: Xin Li <xin@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Tom Lendacky <thomas.lendacky@amd.com>,
Mathias Krause <minipli@grsecurity.net>,
John Allen <john.allen@amd.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Chao Gao <chao.gao@intel.com>,
Maxim Levitsky <mlevitsk@redhat.com>,
Xiaoyao Li <xiaoyao.li@intel.com>
Subject: Re: [PATCH v15 25/41] KVM: x86: SVM: Emulate reads and writes to shadow stack MSRs
Date: Mon, 15 Sep 2025 13:43:51 -0700 [thread overview]
Message-ID: <aMh6hxdDsWmeWrXM@google.com> (raw)
In-Reply-To: <c6d81bac-8540-493d-8edd-18f5d52cf7ff@zytor.com>
On Mon, Sep 15, 2025, Xin Li wrote:
> On 9/12/2025 4:23 PM, Sean Christopherson wrote:
> > From: John Allen <john.allen@amd.com>
> >
> > Emulate shadow stack MSR access by reading and writing to the
> > corresponding fields in the VMCB.
> >
> > Signed-off-by: John Allen <john.allen@amd.com>
> > [sean: mark VMCB_CET dirty/clean as appropriate]
> > Signed-off-by: Sean Christopherson <seanjc@google.com>
>
> For the shortlog, shouldn't we use "KVM: SVM:"?
Yep, I simply missed that goof. Thanks!
next prev parent reply other threads:[~2025-09-15 20:43 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-12 23:22 [PATCH v15 00/41] KVM: x86: Mega-CET Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 01/41] KVM: SEV: Rename kvm_ghcb_get_sw_exit_code() to kvm_get_cached_sw_exit_code() Sean Christopherson
2025-09-15 16:15 ` Tom Lendacky
2025-09-15 16:30 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 02/41] KVM: SEV: Read save fields from GHCB exactly once Sean Christopherson
2025-09-15 17:32 ` Tom Lendacky
2025-09-15 21:08 ` Sean Christopherson
2025-09-17 21:47 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 03/41] KVM: SEV: Validate XCR0 provided by guest in GHCB Sean Christopherson
2025-09-15 18:41 ` Tom Lendacky
2025-09-15 21:22 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 04/41] KVM: x86: Introduce KVM_{G,S}ET_ONE_REG uAPIs support Sean Christopherson
2025-09-15 6:29 ` Xiaoyao Li
2025-09-16 7:10 ` Binbin Wu
2025-09-17 13:14 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 05/41] KVM: x86: Report XSS as to-be-saved if there are supported features Sean Christopherson
2025-09-16 7:12 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 06/41] KVM: x86: Check XSS validity against guest CPUIDs Sean Christopherson
2025-09-16 7:20 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 07/41] KVM: x86: Refresh CPUID on write to guest MSR_IA32_XSS Sean Christopherson
2025-09-16 7:23 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 08/41] KVM: x86: Initialize kvm_caps.supported_xss Sean Christopherson
2025-09-16 7:29 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 09/41] KVM: x86: Load guest FPU state when access XSAVE-managed MSRs Sean Christopherson
2025-09-15 17:04 ` Xin Li
2025-09-16 6:51 ` Xiaoyao Li
2025-09-16 8:28 ` Binbin Wu
2025-09-17 2:51 ` Binbin Wu
2025-09-17 12:47 ` Sean Christopherson
2025-09-17 21:56 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 10/41] KVM: x86: Add fault checks for guest CR4.CET setting Sean Christopherson
2025-09-16 8:33 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 11/41] KVM: x86: Report KVM supported CET MSRs as to-be-saved Sean Christopherson
2025-09-15 6:30 ` Xiaoyao Li
2025-09-16 8:46 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 12/41] KVM: VMX: Introduce CET VMCS fields and control bits Sean Christopherson
2025-09-15 6:31 ` Xiaoyao Li
2025-09-16 9:00 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 13/41] KVM: x86: Enable guest SSP read/write interface with new uAPIs Sean Christopherson
2025-09-15 6:55 ` Xiaoyao Li
2025-09-15 22:12 ` Sean Christopherson
2025-09-16 5:52 ` Xiaoyao Li
2025-09-19 17:47 ` Sean Christopherson
2025-09-19 17:58 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 14/41] KVM: VMX: Emulate read and write to CET MSRs Sean Christopherson
2025-09-16 7:07 ` Xiaoyao Li
2025-09-16 7:48 ` Chao Gao
2025-09-16 8:10 ` Xiaoyao Li
2025-09-19 22:11 ` Sean Christopherson
2025-09-17 7:52 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 15/41] KVM: x86: Save and reload SSP to/from SMRAM Sean Christopherson
2025-09-16 7:37 ` Xiaoyao Li
2025-09-17 7:53 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 16/41] KVM: VMX: Set up interception for CET MSRs Sean Christopherson
2025-09-15 17:21 ` Xin Li
2025-09-16 7:40 ` Xiaoyao Li
2025-09-17 8:32 ` Binbin Wu
2025-09-17 13:44 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 17/41] KVM: VMX: Set host constant supervisor states to VMCS fields Sean Christopherson
2025-09-16 7:44 ` Xiaoyao Li
2025-09-17 8:48 ` Xiaoyao Li
2025-09-17 21:25 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 18/41] KVM: x86: Don't emulate instructions affected by CET features Sean Christopherson
2025-09-17 8:16 ` Chao Gao
2025-09-17 21:15 ` Sean Christopherson
2025-09-18 14:54 ` Chao Gao
2025-09-18 18:02 ` Sean Christopherson
2025-09-17 8:19 ` Xiaoyao Li
2025-09-18 14:15 ` Chao Gao
2025-09-19 1:25 ` Sean Christopherson
2025-09-17 8:45 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 19/41] KVM: x86: Enable CET virtualization for VMX and advertise to userspace Sean Christopherson
2025-09-18 1:57 ` Binbin Wu
2025-09-19 22:57 ` Sean Christopherson
2025-09-18 2:18 ` Binbin Wu
2025-09-18 18:05 ` Sean Christopherson
2025-09-19 7:10 ` Xiaoyao Li
2025-09-19 14:25 ` Sean Christopherson
2025-09-12 23:22 ` [PATCH v15 20/41] KVM: nVMX: Virtualize NO_HW_ERROR_CODE_CC for L1 event injection to L2 Sean Christopherson
2025-09-18 2:27 ` Binbin Wu
2025-09-12 23:22 ` [PATCH v15 21/41] KVM: nVMX: Prepare for enabling CET support for nested guest Sean Christopherson
2025-09-15 17:45 ` Xin Li
2025-09-18 4:48 ` Xin Li
2025-09-18 18:05 ` Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 22/41] KVM: nVMX: Add consistency checks for CR0.WP and CR4.CET Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 23/41] KVM: nVMX: Add consistency checks for CET states Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 24/41] KVM: nVMX: Advertise new VM-Entry/Exit control bits for CET state Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 25/41] KVM: x86: SVM: Emulate reads and writes to shadow stack MSRs Sean Christopherson
2025-09-15 17:56 ` Xin Li
2025-09-15 20:43 ` Sean Christopherson [this message]
2025-09-12 23:23 ` [PATCH v15 26/41] KVM: nSVM: Save/load CET Shadow Stack state to/from vmcb12/vmcb02 Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 27/41] KVM: x86: SVM: Update dump_vmcb with shadow stack save area additions Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 28/41] KVM: x86: SVM: Pass through shadow stack MSRs as appropriate Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 29/41] KVM: SEV: Synchronize MSR_IA32_XSS from the GHCB when it's valid Sean Christopherson
2025-09-16 18:55 ` John Allen
2025-09-16 19:53 ` Sean Christopherson
2025-09-16 20:33 ` John Allen
2025-09-16 21:38 ` Sean Christopherson
2025-09-16 22:55 ` John Allen
2025-09-18 19:48 ` John Allen
2025-09-18 20:34 ` Sean Christopherson
2025-09-18 20:44 ` Sean Christopherson
2025-09-18 21:23 ` John Allen
2025-09-18 21:42 ` Edgecombe, Rick P
2025-09-18 22:18 ` John Allen
2025-09-19 13:40 ` Tom Lendacky
2025-09-19 16:13 ` John Allen
2025-09-19 17:29 ` Edgecombe, Rick P
2025-09-19 20:58 ` Edgecombe, Rick P
2025-09-22 9:19 ` Kiryl Shutsemau
2025-09-22 9:33 ` Upadhyay, Neeraj
2025-09-22 9:54 ` Kiryl Shutsemau
2025-09-12 23:23 ` [PATCH v15 30/41] KVM: SVM: Enable shadow stack virtualization for SVM Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 31/41] KVM: x86: Add human friendly formatting for #XM, and #VE Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 32/41] KVM: x86: Define Control Protection Exception (#CP) vector Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 33/41] KVM: x86: Define AMD's #HV, #VC, and #SX exception vectors Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 34/41] KVM: selftests: Add ex_str() to print human friendly name of " Sean Christopherson
2025-09-15 9:07 ` Chao Gao
2025-09-12 23:23 ` [PATCH v15 35/41] KVM: selftests: Add an MSR test to exercise guest/host and read/write Sean Christopherson
2025-09-15 8:22 ` Chao Gao
2025-09-15 17:00 ` Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 36/41] KVM: selftests: Add support for MSR_IA32_{S,U}_CET to MSRs test Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 37/41] KVM: selftests: Extend MSRs test to validate vCPUs without supported features Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 38/41] KVM: selftests: Add KVM_{G,S}ET_ONE_REG coverage to MSRs test Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 39/41] KVM: selftests: Add coverate for KVM-defined registers in " Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 40/41] KVM: selftests: Verify MSRs are (not) in save/restore list when (un)supported Sean Christopherson
2025-09-12 23:23 ` [PATCH v15 41/41] KVM: VMX: Make CR4.CET a guest owned bit Sean Christopherson
2025-09-15 13:18 ` [PATCH v15 00/41] KVM: x86: Mega-CET Mathias Krause
2025-09-15 21:20 ` John Allen
2025-09-16 13:53 ` Chao Gao
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