xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: VMX: Shadow VMCS pin controls

Browse Source 
Prepare to shadow all major control fields on a per-VMCS basis, which
allows KVM to avoid costly VMWRITEs when switching between vmcs01 and
vmcs02.

Shadowing pin controls also allows a future patch to remove the per-VMCS
'hv_timer_armed' flag, as the shadow copy is a superset of said flag.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2019-05-07 12:17:55 -07:00
committed by Paolo Bonzini
parent 70f932ecdf
commit c5f2c76643
3 changed files with 8 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kvm/vmx/nested.c
View File

@@ -285,6 +285,7 @@ static void vmx_switch_vmcs(struct kvm_vcpu *vcpu, struct loaded_vmcs *vmcs)
vm_entry_controls_reset_shadow(vmx);
vm_exit_controls_reset_shadow(vmx);
pin_controls_reset_shadow(vmx);
vmx_segment_cache_clear(vmx);
}
@@ -2026,7 +2027,7 @@ static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
} else {
exec_control &= ~PIN_BASED_POSTED_INTR;
}
vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, exec_control);
pin_controls_init(vmx, exec_control);
/*
* EXEC CONTROLS