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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-05-02 07:32:25 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 19:15:04 +0300 |
| commit | 56ba77a459a72a7d95be74355a40a91e1f6dd7f7 (patch) | |
| tree | 5baa10ed1ca301dab3d9f57c70ebcd992af95e91 /arch/x86/include/asm/kvm_host.h | |
| parent | 1af1bb05625bcdd09522f416b62bcc72cc2fdd3b (diff) | |
| download | linux-56ba77a459a72a7d95be74355a40a91e1f6dd7f7.tar.xz | |
KVM: x86: Save L1 TSC offset in 'struct kvm_vcpu_arch'
Save L1's TSC offset in 'struct kvm_vcpu_arch' and drop the kvm_x86_ops
hook read_l1_tsc_offset(). This avoids a retpoline (when configured)
when reading L1's effective TSC, which is done at least once on every
VM-Exit.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200502043234.12481-2-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index efe6199c596c..3ff671e35d76 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -708,6 +708,7 @@ struct kvm_vcpu_arch { struct gfn_to_pfn_cache cache; } st; + u64 l1_tsc_offset; u64 tsc_offset; u64 last_guest_tsc; u64 last_host_tsc; @@ -1165,7 +1166,6 @@ struct kvm_x86_ops { bool (*has_wbinvd_exit)(void); - u64 (*read_l1_tsc_offset)(struct kvm_vcpu *vcpu); /* Returns actual tsc_offset set in active VMCS */ u64 (*write_l1_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset); |