* Re: [PATCH] KVM: VMX: add encapsulation kvm_vcpu_pi_need_handle
2017-09-21 15:14 [PATCH] KVM: VMX: add encapsulation kvm_vcpu_pi_need_handle Peng Hao
@ 2017-09-21 8:16 ` Longpeng (Mike)
0 siblings, 0 replies; 2+ messages in thread
From: Longpeng (Mike) @ 2017-09-21 8:16 UTC (permalink / raw)
To: Peng Hao; +Cc: pbonzini, rkrcmar, x86, kvm, linux-kernel
Hi Peng,
There are two bugs in current code and Paolo already fixed them, please see:
https://www.spinics.net/lists/kvm/msg150896.html
--
Regards,
Longpeng(Mike)
On 2017/9/21 23:14, Peng Hao wrote:
> use kvm_vcpu_pi_need_handle encapsulation simply coede
>
> Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
> ---
> arch/x86/kvm/vmx.c | 27 ++++++++++++---------------
> 1 file changed, 12 insertions(+), 15 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 4253ade..26b99f4 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -559,6 +559,13 @@ static inline int pi_test_sn(struct pi_desc *pi_desc)
> (unsigned long *)&pi_desc->control);
> }
>
> +static inline bool kvm_vcpu_pi_need_handle(struct kvm_vcpu *vcpu)
> +{
> + return kvm_arch_has_assigned_device(vcpu->kvm) &&
> + irq_remapping_cap(IRQ_POSTING_CAP) &&
> + kvm_vcpu_apicv_active(vcpu);
> +}
> +
> struct vcpu_vmx {
> struct kvm_vcpu vcpu;
> unsigned long host_rsp;
> @@ -2202,9 +2209,7 @@ static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
> struct pi_desc old, new;
> unsigned int dest;
>
> - if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
> - !irq_remapping_cap(IRQ_POSTING_CAP) ||
> - !kvm_vcpu_apicv_active(vcpu))
> + if (!kvm_vcpu_pi_need_handle(vcpu))
> return;
>
> do {
> @@ -2323,9 +2328,7 @@ static void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu)
> {
> struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
>
> - if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
> - !irq_remapping_cap(IRQ_POSTING_CAP) ||
> - !kvm_vcpu_apicv_active(vcpu))
> + if (!kvm_vcpu_pi_need_handle(vcpu))
> return;
>
> /* Set SN when the vCPU is preempted */
> @@ -11691,9 +11694,7 @@ static int pi_pre_block(struct kvm_vcpu *vcpu)
> struct pi_desc old, new;
> struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
>
> - if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
> - !irq_remapping_cap(IRQ_POSTING_CAP) ||
> - !kvm_vcpu_apicv_active(vcpu))
> + if (!kvm_vcpu_pi_need_handle(vcpu))
> return 0;
>
> vcpu->pre_pcpu = vcpu->cpu;
> @@ -11769,9 +11770,7 @@ static void pi_post_block(struct kvm_vcpu *vcpu)
> unsigned int dest;
> unsigned long flags;
>
> - if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
> - !irq_remapping_cap(IRQ_POSTING_CAP) ||
> - !kvm_vcpu_apicv_active(vcpu))
> + if (!kvm_vcpu_pi_need_handle(vcpu))
> return;
>
> do {
> @@ -11831,9 +11830,7 @@ static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
> struct vcpu_data vcpu_info;
> int idx, ret = -EINVAL;
>
> - if (!kvm_arch_has_assigned_device(kvm) ||
> - !irq_remapping_cap(IRQ_POSTING_CAP) ||
> - !kvm_vcpu_apicv_active(kvm->vcpus[0]))
> + if (!kvm_vcpu_pi_need_handle(kvm->vcpus[0]))
> return 0;
>
> idx = srcu_read_lock(&kvm->irq_srcu);
--
Regards,
Longpeng(Mike)
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH] KVM: VMX: add encapsulation kvm_vcpu_pi_need_handle
@ 2017-09-21 15:14 Peng Hao
2017-09-21 8:16 ` Longpeng (Mike)
0 siblings, 1 reply; 2+ messages in thread
From: Peng Hao @ 2017-09-21 15:14 UTC (permalink / raw)
To: pbonzini, rkrcmar; +Cc: x86, kvm, linux-kernel, Peng Hao
use kvm_vcpu_pi_need_handle encapsulation simply coede
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
arch/x86/kvm/vmx.c | 27 ++++++++++++---------------
1 file changed, 12 insertions(+), 15 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 4253ade..26b99f4 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -559,6 +559,13 @@ static inline int pi_test_sn(struct pi_desc *pi_desc)
(unsigned long *)&pi_desc->control);
}
+static inline bool kvm_vcpu_pi_need_handle(struct kvm_vcpu *vcpu)
+{
+ return kvm_arch_has_assigned_device(vcpu->kvm) &&
+ irq_remapping_cap(IRQ_POSTING_CAP) &&
+ kvm_vcpu_apicv_active(vcpu);
+}
+
struct vcpu_vmx {
struct kvm_vcpu vcpu;
unsigned long host_rsp;
@@ -2202,9 +2209,7 @@ static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
struct pi_desc old, new;
unsigned int dest;
- if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
- !irq_remapping_cap(IRQ_POSTING_CAP) ||
- !kvm_vcpu_apicv_active(vcpu))
+ if (!kvm_vcpu_pi_need_handle(vcpu))
return;
do {
@@ -2323,9 +2328,7 @@ static void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu)
{
struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
- if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
- !irq_remapping_cap(IRQ_POSTING_CAP) ||
- !kvm_vcpu_apicv_active(vcpu))
+ if (!kvm_vcpu_pi_need_handle(vcpu))
return;
/* Set SN when the vCPU is preempted */
@@ -11691,9 +11694,7 @@ static int pi_pre_block(struct kvm_vcpu *vcpu)
struct pi_desc old, new;
struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
- if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
- !irq_remapping_cap(IRQ_POSTING_CAP) ||
- !kvm_vcpu_apicv_active(vcpu))
+ if (!kvm_vcpu_pi_need_handle(vcpu))
return 0;
vcpu->pre_pcpu = vcpu->cpu;
@@ -11769,9 +11770,7 @@ static void pi_post_block(struct kvm_vcpu *vcpu)
unsigned int dest;
unsigned long flags;
- if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
- !irq_remapping_cap(IRQ_POSTING_CAP) ||
- !kvm_vcpu_apicv_active(vcpu))
+ if (!kvm_vcpu_pi_need_handle(vcpu))
return;
do {
@@ -11831,9 +11830,7 @@ static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
struct vcpu_data vcpu_info;
int idx, ret = -EINVAL;
- if (!kvm_arch_has_assigned_device(kvm) ||
- !irq_remapping_cap(IRQ_POSTING_CAP) ||
- !kvm_vcpu_apicv_active(kvm->vcpus[0]))
+ if (!kvm_vcpu_pi_need_handle(kvm->vcpus[0]))
return 0;
idx = srcu_read_lock(&kvm->irq_srcu);
--
1.8.3.1
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2017-09-21 15:14 [PATCH] KVM: VMX: add encapsulation kvm_vcpu_pi_need_handle Peng Hao
2017-09-21 8:16 ` Longpeng (Mike)
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