diff options
| author | Aaron Lewis <aaronlewis@google.com> | 2019-10-21 16:30:25 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-10-22 15:46:53 +0200 |
| commit | 139a12cfe1a040fd881338a7cc042bd37159ea9a (patch) | |
| tree | 700bbbb3a65db5c7c66031fb20548c4856ad1cb0 /arch/x86/kvm/vmx | |
| parent | 9753d68865c5662eee94eb8808b5ad5eb766f5ea (diff) | |
KVM: x86: Move IA32_XSS-swapping on VM-entry/VM-exit to common x86 code
Hoist the vendor-specific code related to loading the hardware IA32_XSS
MSR with guest/host values on VM-entry/VM-exit to common x86 code.
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Change-Id: Ic6e3430833955b98eb9b79ae6715cf2a3fdd6d82
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 27 |
1 files changed, 2 insertions, 25 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index aee6f1a9d252..d06140bdb3ad 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -106,8 +106,6 @@ module_param(enable_apicv, bool, S_IRUGO); static bool __read_mostly nested = 1; module_param(nested, bool, S_IRUGO); -static u64 __read_mostly host_xss; - bool __read_mostly enable_pml = 1; module_param_named(pml, enable_pml, bool, S_IRUGO); @@ -6466,22 +6464,6 @@ void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp) } } -static void vmx_load_guest_xss(struct kvm_vcpu *vcpu) -{ - if (kvm_read_cr4_bits(vcpu, X86_CR4_OSXSAVE) && - vcpu->arch.xsaves_enabled && - vcpu->arch.ia32_xss != host_xss) - wrmsrl(MSR_IA32_XSS, vcpu->arch.ia32_xss); -} - -static void vmx_load_host_xss(struct kvm_vcpu *vcpu) -{ - if (kvm_read_cr4_bits(vcpu, X86_CR4_OSXSAVE) && - vcpu->arch.xsaves_enabled && - vcpu->arch.ia32_xss != host_xss) - wrmsrl(MSR_IA32_XSS, host_xss); -} - bool __vmx_vcpu_run(struct vcpu_vmx *vmx, unsigned long *regs, bool launched); static void vmx_vcpu_run(struct kvm_vcpu *vcpu) @@ -6532,8 +6514,7 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu) if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) vmx_set_interrupt_shadow(vcpu, 0); - kvm_load_guest_xcr0(vcpu); - vmx_load_guest_xss(vcpu); + kvm_load_guest_xsave_state(vcpu); if (static_cpu_has(X86_FEATURE_PKU) && kvm_read_cr4_bits(vcpu, X86_CR4_PKE) && @@ -6640,8 +6621,7 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu) __write_pkru(vmx->host_pkru); } - vmx_load_host_xss(vcpu); - kvm_put_guest_xcr0(vcpu); + kvm_load_host_xsave_state(vcpu); vmx->nested.nested_run_pending = 0; vmx->idt_vectoring_info = 0; @@ -7611,9 +7591,6 @@ static __init int hardware_setup(void) WARN_ONCE(host_bndcfgs, "KVM: BNDCFGS in host will be lost"); } - if (boot_cpu_has(X86_FEATURE_XSAVES)) - rdmsrl(MSR_IA32_XSS, host_xss); - if (!cpu_has_vmx_vpid() || !cpu_has_vmx_invvpid() || !(cpu_has_vmx_invvpid_single() || cpu_has_vmx_invvpid_global())) enable_vpid = 0; |