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KVM: SVM: Inject #UD for INVLPGA if EFER.SVME=0

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INVLPGA should cause a #UD when EFER.SVME is not set. Add a check to
properly inject #UD when EFER.SVME=0.

Fixes: ff092385e8 ("KVM: SVM: Implement INVLPGA")
Cc: stable@vger.kernel.org
Signed-off-by: Kevin Cheng <chengkev@google.com>
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20260228033328.2285047-3-chengkev@google.com
[sean: tag for stable@]
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Kevin Cheng 2026-02-28 03:33:26 +00:00 committed by Sean Christopherson
parent c64bc6ed17
commit d99df02ff4
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kvm/svm/svm.c
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@ -2367,6 +2367,9 @@ static int invlpga_interception(struct kvm_vcpu *vcpu)
gva_t gva = kvm_rax_read(vcpu);
u32 asid = kvm_rcx_read(vcpu);
if (nested_svm_check_permissions(vcpu))
return 1;
/* FIXME: Handle an address size prefix. */
if (!is_long_mode(vcpu))
gva = (u32)gva;