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([2001:b07:6468:f312:63a7:c72e:ea0e:6045]) by smtp.googlemail.com with ESMTPSA id vb7-20020a170907d04700b0099ccee57ac2sm4209223ejc.194.2023.10.16.08.14.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Oct 2023 08:14:42 -0700 (PDT) Message-ID: <359d7c57-2a71-419d-b63f-4c5610f48b0f@redhat.com> Date: Mon, 16 Oct 2023 17:14:38 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 01/50] KVM: SVM: INTERCEPT_RDTSCP is never intercepted anyway Content-Language: en-US To: Greg KH , Michael Roth Cc: kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com, ardb@kernel.org, seanjc@google.com, vkuznets@redhat.com, jmattson@google.com, luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com, peterz@infradead.org, srinivas.pandruvada@linux.intel.com, rientjes@google.com, dovmurik@linux.ibm.com, tobin@ibm.com, bp@alien8.de, vbabka@suse.cz, kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com, marcorr@google.com, sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com, jarkko@kernel.org, ashish.kalra@amd.com, nikunj.dadhania@amd.com, pankaj.gupta@amd.com, liam.merwick@oracle.com, zhi.a.wang@intel.com, stable@vger.kernel.org References: <20231016132819.1002933-1-michael.roth@amd.com> <20231016132819.1002933-2-michael.roth@amd.com> <2023101627-species-unscrew-2730@gregkh> From: Paolo Bonzini Autocrypt: addr=pbonzini@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/16/23 17:12, Greg KH wrote: > On Mon, Oct 16, 2023 at 08:27:30AM -0500, Michael Roth wrote: >> From: Paolo Bonzini >> >> svm_recalc_instruction_intercepts() is always called at least once >> before the vCPU is started, so the setting or clearing of the RDTSCP >> intercept can be dropped from the TSC_AUX virtualization support. >> >> Extracted from a patch by Tom Lendacky. >> >> Cc: stable@vger.kernel.org >> Fixes: 296d5a17e793 ("KVM: SEV-ES: Use V_TSC_AUX if available instead of RDTSC/MSR_TSC_AUX intercepts") >> Signed-off-by: Paolo Bonzini >> (cherry picked from commit e8d93d5d93f85949e7299be289c6e7e1154b2f78) >> Signed-off-by: Michael Roth >> --- >> arch/x86/kvm/svm/sev.c | 5 +---- >> 1 file changed, 1 insertion(+), 4 deletions(-) > > What stable tree(s) are you wanting this applied to (same for the others > in this series)? It's already in the 6.1.56 release, and the Fixes tag > is for 5.19, so I don't see where it could be missing from? I tink it's missing in the (destined for 6.7) tree that Michael is basing this series on, so he's cherry picking it from Linus's tree. Paolo