diff mbox series

[v12,21/84] KVM: nVMX: Rely on kvm_vcpu_unmap() to track validity of eVMCS mapping

Message ID 20240726235234.228822-22-seanjc@google.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series KVM: Stop grabbing references to PFNMAP'd pages | expand

Checks

Context Check Description
conchuod/vmtest-fixes-PR fail merge-conflict
conchuod/vmtest-for-next-PR fail PR summary
conchuod/patch-21-test-1 success .github/scripts/patches/tests/build_rv32_defconfig.sh
conchuod/patch-21-test-2 success .github/scripts/patches/tests/build_rv64_clang_allmodconfig.sh
conchuod/patch-21-test-3 success .github/scripts/patches/tests/build_rv64_gcc_allmodconfig.sh
conchuod/patch-21-test-4 success .github/scripts/patches/tests/build_rv64_nommu_k210_defconfig.sh
conchuod/patch-21-test-5 success .github/scripts/patches/tests/build_rv64_nommu_virt_defconfig.sh
conchuod/patch-21-test-6 success .github/scripts/patches/tests/checkpatch.sh
conchuod/patch-21-test-7 success .github/scripts/patches/tests/dtb_warn_rv64.sh
conchuod/patch-21-test-8 success .github/scripts/patches/tests/header_inline.sh
conchuod/patch-21-test-9 success .github/scripts/patches/tests/kdoc.sh
conchuod/patch-21-test-10 success .github/scripts/patches/tests/module_param.sh
conchuod/patch-21-test-11 success .github/scripts/patches/tests/verify_fixes.sh
conchuod/patch-21-test-12 success .github/scripts/patches/tests/verify_signedoff.sh

Commit Message

Sean Christopherson July 26, 2024, 11:51 p.m. UTC
Remove the explicit evmptr12 validity check when deciding whether or not
to unmap the eVMCS pointer, and instead rely on kvm_vcpu_unmap() to play
nice with a NULL map->hva, i.e. to do nothing if the map is invalid.

Note, vmx->nested.hv_evmcs_map is zero-allocated along with the rest of
vcpu_vmx, i.e. the map starts out invalid/NULL.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/vmx/nested.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 2392a7ef254d..a34b49ea64b5 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -231,11 +231,8 @@  static inline void nested_release_evmcs(struct kvm_vcpu *vcpu)
 	struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
 	struct vcpu_vmx *vmx = to_vmx(vcpu);
 
-	if (nested_vmx_is_evmptr12_valid(vmx)) {
-		kvm_vcpu_unmap(vcpu, &vmx->nested.hv_evmcs_map, true);
-		vmx->nested.hv_evmcs = NULL;
-	}
-
+	kvm_vcpu_unmap(vcpu, &vmx->nested.hv_evmcs_map, true);
+	vmx->nested.hv_evmcs = NULL;
 	vmx->nested.hv_evmcs_vmptr = EVMPTR_INVALID;
 
 	if (hv_vcpu) {