From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Stefan Sterz Date: Wed, 18 Oct 2023 10:45:45 +0200 Subject: [PATCH] Revert "nSVM: Check for reserved encodings of TLB_CONTROL in nested VMCB" This reverts commit 174a921b6975ef959dd82ee9e8844067a62e3ec1. Signed-off-by: Stefan Sterz --- arch/x86/kvm/svm/nested.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index add65dd59756..61a6c0235519 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -242,18 +242,6 @@ static bool nested_svm_check_bitmap_pa(struct kvm_vcpu *vcpu, u64 pa, u32 size) kvm_vcpu_is_legal_gpa(vcpu, addr + size - 1); } -static bool nested_svm_check_tlb_ctl(struct kvm_vcpu *vcpu, u8 tlb_ctl) -{ - /* Nested FLUSHBYASID is not supported yet. */ - switch(tlb_ctl) { - case TLB_CONTROL_DO_NOTHING: - case TLB_CONTROL_FLUSH_ALL_ASID: - return true; - default: - return false; - } -} - static bool __nested_vmcb_check_controls(struct kvm_vcpu *vcpu, struct vmcb_ctrl_area_cached *control) { @@ -273,9 +261,6 @@ static bool __nested_vmcb_check_controls(struct kvm_vcpu *vcpu, IOPM_SIZE))) return false; - if (CC(!nested_svm_check_tlb_ctl(vcpu, control->tlb_ctl))) - return false; - return true; }