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| 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 /security | |
| 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 'security')
0 files changed, 0 insertions, 0 deletions