The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 6d1b867d045699d6ce0dfa0ef35d1b87dd36db56 Mon Sep 17 00:00:00 2001
From: Sean Christopherson seanjc@google.com Date: Thu, 4 Mar 2021 17:10:56 -0800 Subject: [PATCH] KVM: SVM: Don't strip the C-bit from CR2 on #PF interception
Don't strip the C-bit from the faulting address on an intercepted #PF, the address is a virtual address, not a physical address.
Fixes: 0ede79e13224 ("KVM: SVM: Clear C-bit from the page fault address") Cc: stable@vger.kernel.org Cc: Brijesh Singh brijesh.singh@amd.com Cc: Tom Lendacky thomas.lendacky@amd.com Signed-off-by: Sean Christopherson seanjc@google.com Message-Id: 20210305011101.3597423-13-seanjc@google.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 58a45bb139f8..cc45ea16c0d7 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -1898,7 +1898,7 @@ static void svm_set_dr7(struct kvm_vcpu *vcpu, unsigned long value)
static int pf_interception(struct vcpu_svm *svm) { - u64 fault_address = __sme_clr(svm->vmcb->control.exit_info_2); + u64 fault_address = svm->vmcb->control.exit_info_2; u64 error_code = svm->vmcb->control.exit_info_1;
return kvm_handle_page_fault(&svm->vcpu, error_code, fault_address,