This is a note to let you know that I've just added the patch titled
KVM: x86: clean up kvm_arch_vcpu_runnable
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-x86-clean-up-kvm_arch_vcpu_runnable.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 5d9bc648b94dd719022343b8675e6c4381f0c45f Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <[email protected]>
Date: Tue, 13 Oct 2015 10:18:53 +0200
Subject: KVM: x86: clean up kvm_arch_vcpu_runnable
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Paolo Bonzini <[email protected]>
commit 5d9bc648b94dd719022343b8675e6c4381f0c45f upstream.
Split the huge conditional in two functions.
Fixes: 64d6067057d9658acb8675afcfba549abdb7fc16
Reviewed-by: Radim Krčmář <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/x86/kvm/x86.c | 39 +++++++++++++++++++++++++++++----------
1 file changed, 29 insertions(+), 10 deletions(-)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6706,6 +6706,12 @@ static inline int vcpu_block(struct kvm
return 1;
}
+static inline bool kvm_vcpu_running(struct kvm_vcpu *vcpu)
+{
+ return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
+ !vcpu->arch.apf.halted);
+}
+
static int vcpu_run(struct kvm_vcpu *vcpu)
{
int r;
@@ -6714,8 +6720,7 @@ static int vcpu_run(struct kvm_vcpu *vcp
vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
for (;;) {
- if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
- !vcpu->arch.apf.halted)
+ if (kvm_vcpu_running(vcpu))
r = vcpu_enter_guest(vcpu);
else
r = vcpu_block(kvm, vcpu);
@@ -8011,19 +8016,33 @@ void kvm_arch_flush_shadow_memslot(struc
kvm_mmu_invalidate_zap_all_pages(kvm);
}
+static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
+{
+ if (!list_empty_careful(&vcpu->async_pf.done))
+ return true;
+
+ if (kvm_apic_has_events(vcpu))
+ return true;
+
+ if (vcpu->arch.pv.pv_unhalted)
+ return true;
+
+ if (atomic_read(&vcpu->arch.nmi_queued))
+ return true;
+
+ if (kvm_arch_interrupt_allowed(vcpu) &&
+ kvm_cpu_has_interrupt(vcpu))
+ return true;
+
+ return false;
+}
+
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
{
if (is_guest_mode(vcpu) && kvm_x86_ops->check_nested_events)
kvm_x86_ops->check_nested_events(vcpu, false);
- return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
- !vcpu->arch.apf.halted)
- || !list_empty_careful(&vcpu->async_pf.done)
- || kvm_apic_has_events(vcpu)
- || vcpu->arch.pv.pv_unhalted
- || atomic_read(&vcpu->arch.nmi_queued) ||
- (kvm_arch_interrupt_allowed(vcpu) &&
- kvm_cpu_has_interrupt(vcpu));
+ return kvm_vcpu_running(vcpu) || kvm_vcpu_has_events(vcpu);
}
int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
Patches currently in stable-queue which might be from [email protected] are
queue-4.2/kvm-x86-fix-smi-to-halted-vcpu.patch
queue-4.2/kvm-x86-clean-up-kvm_arch_vcpu_runnable.patch
queue-4.2/kvm-x86-fix-rsm-into-64-bit-protected-mode.patch
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