diff options
| author | Ilias Stamatis <ilstam@amazon.com> | 2021-05-26 19:44:13 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:28 -0400 |
| commit | 307a94c721fed1aaaeee68115df6f7fb8193b23f (patch) | |
| tree | 5bc5f924803a7466af8b3682cbe8b5f5b5b9445e /arch/x86/include/asm | |
| parent | 3c0f99366e34c1b45e4908e151089a8bf93fbe71 (diff) | |
KVM: X86: Add functions for retrieving L2 TSC fields from common code
In order to implement as much of the nested TSC scaling logic as
possible in common code, we need these vendor callbacks for retrieving
the TSC offset and the TSC multiplier that L1 has set for L2.
Signed-off-by: Ilias Stamatis <ilstam@amazon.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210526184418.28881-7-ilstam@amazon.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/kvm-x86-ops.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index e7bef91cee04..c4906f73603d 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -87,6 +87,8 @@ KVM_X86_OP(set_identity_map_addr) KVM_X86_OP(get_mt_mask) KVM_X86_OP(load_mmu_pgd) KVM_X86_OP_NULL(has_wbinvd_exit) +KVM_X86_OP(get_l2_tsc_offset) +KVM_X86_OP(get_l2_tsc_multiplier) KVM_X86_OP(write_l1_tsc_offset) KVM_X86_OP(get_exit_info) KVM_X86_OP(check_intercept) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index d6bba19bc094..6ec00427c6fd 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1311,6 +1311,8 @@ struct kvm_x86_ops { bool (*has_wbinvd_exit)(void); + u64 (*get_l2_tsc_offset)(struct kvm_vcpu *vcpu); + u64 (*get_l2_tsc_multiplier)(struct kvm_vcpu *vcpu); /* Returns actual tsc_offset set in active VMCS */ u64 (*write_l1_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset); |