diff options
| author | Sean Christopherson <seanjc@google.com> | 2022-02-25 21:22:43 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-01 16:58:24 +0300 |
| commit | f6d0a2521ce1cc3aea760ea42b43c428e1c98108 (patch) | |
| tree | 95b50aa25f3342bdd650c39ec6dcefc42c3e1d36 | |
| parent | 1e326ad429784a16b2b34ec296ff4ca7ad42c220 (diff) | |
| download | linux-f6d0a2521ce1cc3aea760ea42b43c428e1c98108.tar.xz | |
KVM: x86: Invoke kvm_mmu_unload() directly on CR4.PCIDE change
Replace a KVM_REQ_MMU_RELOAD request with a direct kvm_mmu_unload() call
when the guest's CR4.PCIDE changes. This will allow tweaking the logic
of KVM_REQ_MMU_RELOAD to free only obsolete/invalid roots, which is the
historical intent of KVM_REQ_MMU_RELOAD. The recent PCIDE behavior is
the only user of KVM_REQ_MMU_RELOAD that doesn't mark affected roots as
obsolete, needs to unconditionally unload the entire MMU, _and_ affects
only the current vCPU.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220225182248.3812651-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fce6bc707122..18977693517a 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1079,7 +1079,7 @@ void kvm_post_set_cr4(struct kvm_vcpu *vcpu, unsigned long old_cr4, unsigned lon */ if (!tdp_enabled && (cr4 & X86_CR4_PCIDE) && !(old_cr4 & X86_CR4_PCIDE)) - kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); + kvm_mmu_unload(vcpu); /* * The TLB has to be flushed for all PCIDs if any of the following |