* [PATCH] KVM: nVMX: Avoid one redundant vmcs_read in prepare_vmcs12
@ 2013-02-20 13:02 Jan Kiszka
2013-02-28 8:20 ` Gleb Natapov
0 siblings, 1 reply; 2+ messages in thread
From: Jan Kiszka @ 2013-02-20 13:02 UTC (permalink / raw)
To: Gleb Natapov, Marcelo Tosatti; +Cc: kvm, Nadav Har'El, Nakajima, Jun
IDT_VECTORING_INFO_FIELD was already read right after vmexit.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
arch/x86/kvm/vmx.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 7d2fbd2..d99a519 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7368,8 +7368,7 @@ void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
vmcs12->vm_exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
vmcs12->vm_exit_intr_error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
- vmcs12->idt_vectoring_info_field =
- vmcs_read32(IDT_VECTORING_INFO_FIELD);
+ vmcs12->idt_vectoring_info_field = to_vmx(vcpu)->idt_vectoring_info;
vmcs12->idt_vectoring_error_code =
vmcs_read32(IDT_VECTORING_ERROR_CODE);
vmcs12->vm_exit_instruction_len = vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
--
1.7.3.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] KVM: nVMX: Avoid one redundant vmcs_read in prepare_vmcs12
2013-02-20 13:02 [PATCH] KVM: nVMX: Avoid one redundant vmcs_read in prepare_vmcs12 Jan Kiszka
@ 2013-02-28 8:20 ` Gleb Natapov
0 siblings, 0 replies; 2+ messages in thread
From: Gleb Natapov @ 2013-02-28 8:20 UTC (permalink / raw)
To: Jan Kiszka; +Cc: Marcelo Tosatti, kvm, Nadav Har'El, Nakajima, Jun
On Wed, Feb 20, 2013 at 02:02:23PM +0100, Jan Kiszka wrote:
> IDT_VECTORING_INFO_FIELD was already read right after vmexit.
>
Applied, thanks.
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> ---
> arch/x86/kvm/vmx.c | 3 +--
> 1 files changed, 1 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 7d2fbd2..d99a519 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -7368,8 +7368,7 @@ void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
>
> vmcs12->vm_exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
> vmcs12->vm_exit_intr_error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
> - vmcs12->idt_vectoring_info_field =
> - vmcs_read32(IDT_VECTORING_INFO_FIELD);
> + vmcs12->idt_vectoring_info_field = to_vmx(vcpu)->idt_vectoring_info;
> vmcs12->idt_vectoring_error_code =
> vmcs_read32(IDT_VECTORING_ERROR_CODE);
> vmcs12->vm_exit_instruction_len = vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
> --
> 1.7.3.4
--
Gleb.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-02-20 13:02 [PATCH] KVM: nVMX: Avoid one redundant vmcs_read in prepare_vmcs12 Jan Kiszka
2013-02-28 8:20 ` Gleb Natapov
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