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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id x6sm468027eds.83.2021.10.26.09.16.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Oct 2021 09:17:00 -0700 (PDT) Message-ID: Date: Tue, 26 Oct 2021 18:16:56 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0 Subject: Re: [PATCH MANUALSEL 5.14 4/5] KVM: SEV-ES: Set guest_state_protected after VMSA update Content-Language: en-US To: Sasha Levin , linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Peter Gonda , tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, kvm@vger.kernel.org References: <20211025203828.1404503-1-sashal@kernel.org> <20211025203828.1404503-4-sashal@kernel.org> From: Paolo Bonzini In-Reply-To: <20211025203828.1404503-4-sashal@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 25/10/21 22:38, Sasha Levin wrote: > From: Peter Gonda > > [ Upstream commit baa1e5ca172ce7bf9554070139482dd7ea919528 ] > > The refactoring in commit bb18a6777465 ("KVM: SEV: Acquire > vcpu mutex when updating VMSA") left behind the assignment to > svm->vcpu.arch.guest_state_protected; add it back. > > Signed-off-by: Peter Gonda > [Delta between v2 and v3 of Peter's patch, which had already been > committed; the commit message is my own. - Paolo] > Fixes: bb18a6777465 ("KVM: SEV: Acquire vcpu mutex when updating VMSA") > Signed-off-by: Paolo Bonzini > Signed-off-by: Sasha Levin > --- > arch/x86/kvm/svm/sev.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c > index cb166bde449b..50dabccd664e 100644 > --- a/arch/x86/kvm/svm/sev.c > +++ b/arch/x86/kvm/svm/sev.c > @@ -619,7 +619,12 @@ static int __sev_launch_update_vmsa(struct kvm *kvm, struct kvm_vcpu *vcpu, > vmsa.handle = to_kvm_svm(kvm)->sev_info.handle; > vmsa.address = __sme_pa(svm->vmsa); > vmsa.len = PAGE_SIZE; > - return sev_issue_cmd(kvm, SEV_CMD_LAUNCH_UPDATE_VMSA, &vmsa, error); > + ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_UPDATE_VMSA, &vmsa, error); > + if (ret) > + return ret; > + > + vcpu->arch.guest_state_protected = true; > + return 0; > } > > static int sev_launch_update_vmsa(struct kvm *kvm, struct kvm_sev_cmd *argp) > Acked-by: Paolo Bonzini I missed that bb18a677746543e7f5eeb478129c92cedb0f9658 was Cc'd to stable. Good bot. :) Paolo