From ee86dbc6e327062396748162b95309388c19faab Mon Sep 17 00:00:00 2001 From: Andrey Smetanin Date: Fri, 3 Jul 2015 15:01:35 +0300 Subject: kvm: introduce vcpu_debug = kvm_debug + vcpu context vcpu_debug is useful macro like kvm_debug but additionally includes vcpu context inside output. Signed-off-by: Andrey Smetanin Signed-off-by: Denis V. Lunev Reviewed-by: Peter Hornyack CC: Paolo Bonzini CC: Gleb Natapov Signed-off-by: Paolo Bonzini --- include/linux/kvm_host.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 05e99b8ef465..1d917d9b7f12 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -424,6 +424,9 @@ struct kvm { #define vcpu_unimpl(vcpu, fmt, ...) \ kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) +#define vcpu_debug(vcpu, fmt, ...) \ + kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) + static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) { smp_rmb(); -- cgit v1.2.3 From 2ce7918990641b07e70e1b25752d666369e2016e Mon Sep 17 00:00:00 2001 From: Andrey Smetanin Date: Fri, 3 Jul 2015 15:01:41 +0300 Subject: kvm/x86: add sending hyper-v crash notification to user space Sending of notification is done by exiting vcpu to user space if KVM_REQ_HV_CRASH is enabled for vcpu. At exit to user space the kvm_run structure contains system_event with type KVM_SYSTEM_EVENT_CRASH to notify about guest crash occurred. Signed-off-by: Andrey Smetanin Signed-off-by: Denis V. Lunev Reviewed-by: Peter Hornyack CC: Paolo Bonzini CC: Gleb Natapov Signed-off-by: Paolo Bonzini --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 1d917d9b7f12..51103f0feb7e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -139,6 +139,7 @@ static inline bool is_error_page(struct page *page) #define KVM_REQ_DISABLE_IBS 24 #define KVM_REQ_APIC_PAGE_RELOAD 25 #define KVM_REQ_SMI 26 +#define KVM_REQ_HV_CRASH 27 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 -- cgit v1.2.3 From d71ba788345c2b5646101766e0c52714a9b5ed7f Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 29 Jul 2015 11:56:48 +0200 Subject: KVM: move code related to KVM_SET_BOOT_CPU_ID to x86 This is another remnant of ia64 support. Signed-off-by: Paolo Bonzini --- include/linux/kvm_host.h | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 51103f0feb7e..bd1097a95704 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -364,9 +364,6 @@ struct kvm { struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; struct srcu_struct srcu; struct srcu_struct irq_srcu; -#ifdef CONFIG_KVM_APIC_ARCHITECTURE - u32 bsp_vcpu_id; -#endif struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; atomic_t online_vcpus; int last_boosted_vcpu; @@ -1059,22 +1056,9 @@ static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) #endif /* CONFIG_HAVE_KVM_EVENTFD */ #ifdef CONFIG_KVM_APIC_ARCHITECTURE -static inline bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu) -{ - return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; -} - -static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) -{ - return (vcpu->arch.apic_base & MSR_IA32_APICBASE_BSP) != 0; -} - bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); - #else - static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } - #endif static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) -- cgit v1.2.3 From dd489240a21afc3ff3962aba5d987229536cae63 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 29 Jul 2015 11:32:20 +0200 Subject: KVM: document memory barriers for kvm->vcpus/kvm->online_vcpus Signed-off-by: Paolo Bonzini --- include/linux/kvm_host.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index bd1097a95704..81089cf1f0c1 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -427,6 +427,10 @@ struct kvm { static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) { + /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case + * the caller has read kvm->online_vcpus before (as is the case + * for kvm_for_each_vcpu, for example). + */ smp_rmb(); return kvm->vcpus[i]; } -- cgit v1.2.3