diff options
| author | Feng Wu <feng.wu@intel.com> | 2015-09-18 22:29:55 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:53 +0200 |
| commit | bf9f6ac8d74969690df1485b33b7c238ca9f2269 (patch) | |
| tree | cfaa21f2831d959dca9bdb4c4ad9e329fec4d5e8 /arch/x86/include | |
| parent | 28b835d60fcc2498e717cf5e6f0c3691c24546f7 (diff) | |
KVM: Update Posted-Interrupts Descriptor when vCPU is blocked
This patch updates the Posted-Interrupts Descriptor when vCPU
is blocked.
pre-block:
- Add the vCPU to the blocked per-CPU list
- Set 'NV' to POSTED_INTR_WAKEUP_VECTOR
post-block:
- Remove the vCPU from the per-CPU list
Signed-off-by: Feng Wu <feng.wu@intel.com>
[Concentrate invocation of pre/post-block hooks to vcpu_block. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 15664994b6f3..cdbdb559ecd2 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -899,6 +899,17 @@ struct kvm_x86_ops { /* pmu operations of sub-arch */ const struct kvm_pmu_ops *pmu_ops; + /* + * Architecture specific hooks for vCPU blocking due to + * HLT instruction. + * Returns for .pre_block(): + * - 0 means continue to block the vCPU. + * - 1 means we cannot block the vCPU since some event + * happens during this period, such as, 'ON' bit in + * posted-interrupts descriptor is set. + */ + int (*pre_block)(struct kvm_vcpu *vcpu); + void (*post_block)(struct kvm_vcpu *vcpu); int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq, uint32_t guest_irq, bool set); }; |