diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-05-02 06:32:31 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 18:15:12 +0200 |
| commit | bd31fe495d0d1a67fe6f44f06dfef637f202241d (patch) | |
| tree | 5bddfc09434a76ab1ccc9c02511d3949da8e6342 /arch/x86/kvm/svm | |
| parent | KVM: VMX: Add proper cache tracking for CR4 (diff) | |
| download | linux-bd31fe495d0d1a67fe6f44f06dfef637f202241d.tar.xz linux-bd31fe495d0d1a67fe6f44f06dfef637f202241d.zip | |
KVM: VMX: Add proper cache tracking for CR0
Move CR0 caching into the standard register caching mechanism in order
to take advantage of the availability checks provided by regs_avail.
This avoids multiple VMREADs in the (uncommon) case where kvm_read_cr0()
is called multiple times in a single VM-Exit, and more importantly
eliminates a kvm_x86_ops hook, saves a retpoline on SVM when reading
CR0, and squashes the confusing naming discrepancy of "cache_reg" vs.
"decache_cr0_guest_bits".
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200502043234.12481-8-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 805297e9a1cb..9e24b5b6fae1 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -1521,10 +1521,6 @@ static void svm_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt) mark_dirty(svm->vmcb, VMCB_DT); } -static void svm_decache_cr0_guest_bits(struct kvm_vcpu *vcpu) -{ -} - static void update_cr0_intercept(struct vcpu_svm *svm) { ulong gcr0 = svm->vcpu.arch.cr0; @@ -4002,7 +3998,6 @@ static struct kvm_x86_ops svm_x86_ops __initdata = { .set_segment = svm_set_segment, .get_cpl = svm_get_cpl, .get_cs_db_l_bits = kvm_get_cs_db_l_bits, - .decache_cr0_guest_bits = svm_decache_cr0_guest_bits, .set_cr0 = svm_set_cr0, .set_cr4 = svm_set_cr4, .set_efer = svm_set_efer, |