From: Christoffer Dall <christoffer.dall@linaro.org> To: Paolo Bonzini <pbonzini@redhat.com>, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Marc Zyngier <marc.zyngier@arm.com> Subject: [PULL 01/21] KVM: Add kvm_arch_vcpu_{un}blocking callbacks Date: Wed, 4 Nov 2015 15:49:40 +0100 [thread overview] Message-ID: <1446648600-27297-2-git-send-email-christoffer.dall@linaro.org> (raw) In-Reply-To: <1446648600-27297-1-git-send-email-christoffer.dall@linaro.org> Some times it is useful for architecture implementations of KVM to know when the VCPU thread is about to block or when it comes back from blocking (arm/arm64 needs to know this to properly implement timers, for example). Therefore provide a generic architecture callback function in line with what we do elsewhere for KVM generic-arch interactions. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> --- arch/arm/include/asm/kvm_host.h | 3 +++ arch/arm64/include/asm/kvm_host.h | 3 +++ arch/mips/include/asm/kvm_host.h | 2 ++ arch/powerpc/include/asm/kvm_host.h | 2 ++ arch/s390/include/asm/kvm_host.h | 2 ++ arch/x86/include/asm/kvm_host.h | 3 +++ include/linux/kvm_host.h | 2 ++ virt/kvm/kvm_main.c | 3 +++ 8 files changed, 20 insertions(+) diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index c4072d9..84da979 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -234,4 +234,7 @@ static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_clear_debug(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} + #endif /* __ARM_KVM_HOST_H__ */ diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index ed03968..e4f4d65 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -255,4 +255,7 @@ void kvm_arm_setup_debug(struct kvm_vcpu *vcpu); void kvm_arm_clear_debug(struct kvm_vcpu *vcpu); void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu); +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} + #endif /* __ARM64_KVM_HOST_H__ */ diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 5a1a882..6ded8d3 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -847,5 +847,7 @@ static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot) {} static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif /* __MIPS_KVM_HOST_H__ */ diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 827a38d..c9f122d 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -718,5 +718,7 @@ static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslot static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} static inline void kvm_arch_exit(void) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif /* __POWERPC_KVM_HOST_H__ */ diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 8ced426..72a614c 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -644,5 +644,7 @@ static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslot static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 2beee03..b28f0f1 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1233,4 +1233,7 @@ int x86_set_memory_region(struct kvm *kvm, bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu); bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu); +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} + #endif /* _ASM_X86_KVM_HOST_H */ diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 1bef9e2..4a86f5f 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -625,6 +625,8 @@ int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); void kvm_vcpu_block(struct kvm_vcpu *vcpu); +void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); +void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); void kvm_vcpu_kick(struct kvm_vcpu *vcpu); int kvm_vcpu_yield_to(struct kvm_vcpu *target); void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8db1d93..7873d6d 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2018,6 +2018,8 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu) } while (single_task_running() && ktime_before(cur, stop)); } + kvm_arch_vcpu_blocking(vcpu); + for (;;) { prepare_to_wait(&vcpu->wq, &wait, TASK_INTERRUPTIBLE); @@ -2031,6 +2033,7 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu) finish_wait(&vcpu->wq, &wait); cur = ktime_get(); + kvm_arch_vcpu_unblocking(vcpu); out: block_ns = ktime_to_ns(cur) - ktime_to_ns(start); -- 2.1.2.330.g565301e.dirty
WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall) To: linux-arm-kernel@lists.infradead.org Subject: [PULL 01/21] KVM: Add kvm_arch_vcpu_{un}blocking callbacks Date: Wed, 4 Nov 2015 15:49:40 +0100 [thread overview] Message-ID: <1446648600-27297-2-git-send-email-christoffer.dall@linaro.org> (raw) In-Reply-To: <1446648600-27297-1-git-send-email-christoffer.dall@linaro.org> Some times it is useful for architecture implementations of KVM to know when the VCPU thread is about to block or when it comes back from blocking (arm/arm64 needs to know this to properly implement timers, for example). Therefore provide a generic architecture callback function in line with what we do elsewhere for KVM generic-arch interactions. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> --- arch/arm/include/asm/kvm_host.h | 3 +++ arch/arm64/include/asm/kvm_host.h | 3 +++ arch/mips/include/asm/kvm_host.h | 2 ++ arch/powerpc/include/asm/kvm_host.h | 2 ++ arch/s390/include/asm/kvm_host.h | 2 ++ arch/x86/include/asm/kvm_host.h | 3 +++ include/linux/kvm_host.h | 2 ++ virt/kvm/kvm_main.c | 3 +++ 8 files changed, 20 insertions(+) diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index c4072d9..84da979 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -234,4 +234,7 @@ static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_clear_debug(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} + #endif /* __ARM_KVM_HOST_H__ */ diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index ed03968..e4f4d65 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -255,4 +255,7 @@ void kvm_arm_setup_debug(struct kvm_vcpu *vcpu); void kvm_arm_clear_debug(struct kvm_vcpu *vcpu); void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu); +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} + #endif /* __ARM64_KVM_HOST_H__ */ diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 5a1a882..6ded8d3 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -847,5 +847,7 @@ static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot) {} static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif /* __MIPS_KVM_HOST_H__ */ diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 827a38d..c9f122d 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -718,5 +718,7 @@ static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslot static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} static inline void kvm_arch_exit(void) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif /* __POWERPC_KVM_HOST_H__ */ diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 8ced426..72a614c 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -644,5 +644,7 @@ static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslot static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot) {} +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 2beee03..b28f0f1 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1233,4 +1233,7 @@ int x86_set_memory_region(struct kvm *kvm, bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu); bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu); +static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} +static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} + #endif /* _ASM_X86_KVM_HOST_H */ diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 1bef9e2..4a86f5f 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -625,6 +625,8 @@ int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); void kvm_vcpu_block(struct kvm_vcpu *vcpu); +void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); +void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); void kvm_vcpu_kick(struct kvm_vcpu *vcpu); int kvm_vcpu_yield_to(struct kvm_vcpu *target); void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8db1d93..7873d6d 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2018,6 +2018,8 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu) } while (single_task_running() && ktime_before(cur, stop)); } + kvm_arch_vcpu_blocking(vcpu); + for (;;) { prepare_to_wait(&vcpu->wq, &wait, TASK_INTERRUPTIBLE); @@ -2031,6 +2033,7 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu) finish_wait(&vcpu->wq, &wait); cur = ktime_get(); + kvm_arch_vcpu_unblocking(vcpu); out: block_ns = ktime_to_ns(cur) - ktime_to_ns(start); -- 2.1.2.330.g565301e.dirty
next prev parent reply other threads:[~2015-11-04 14:49 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-04 14:49 [PULL 00/21] KVM/ARM Changes for v4.4-rc1 Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall [this message] 2015-11-04 14:49 ` [PULL 01/21] KVM: Add kvm_arch_vcpu_{un}blocking callbacks Christoffer Dall 2015-11-04 14:49 ` [PULL 02/21] arm/arm64: KVM: arch_timer: Only schedule soft timer on vcpu_block Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 03/21] arm/arm64: KVM: vgic: Factor out level irq processing on guest exit Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 04/21] arm/arm64: KVM: Implement GICD_ICFGR as RO for PPIs Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 05/21] arm/arm64: KVM: Use appropriate define in VGIC reset code Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 06/21] arm/arm64: KVM: Add forwarded physical interrupts documentation Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 07/21] arm/arm64: KVM: Rework the arch timer to use level-triggered semantics Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 08/21] arm/arm64: KVM: Support edge-triggered forwarded interrupts Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 09/21] arm/arm64: KVM : Enable vhost device selection under KVM config menu Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 10/21] KVM: arm/arm64: rename pause into power_off Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 11/21] KVM: arm/arm64: check power_off in kvm_arch_vcpu_runnable Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 12/21] KVM: arm/arm64: check power_off in critical section before VCPU run Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 13/21] KVM: arm/arm64: implement kvm_arm_[halt,resume]_guest Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 14/21] KVM: arm/arm64: Fix vGIC documentation Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 15/21] arm/arm64: KVM: Improve kvm_exit tracepoint Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 16/21] arm/arm64: KVM: Add tracepoints for vgic and timer Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 17/21] arm64: kvm: restore EL1N SP for panic Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 18/21] KVM: arm: Do not indent the arguments of DECLARE_BITMAP Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 19/21] KVM: arm/arm64: Optimize away redundant LR tracking Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:49 ` [PULL 20/21] KVM: arm/arm64: Clean up vgic_retire_lr() and surroundings Christoffer Dall 2015-11-04 14:49 ` Christoffer Dall 2015-11-04 14:50 ` [PULL 21/21] KVM: arm/arm64: Merge vgic_set_lr() and vgic_sync_lr_elrsr() Christoffer Dall 2015-11-04 14:50 ` Christoffer Dall 2015-11-04 15:28 ` [PULL 00/21] KVM/ARM Changes for v4.4-rc1 Paolo Bonzini 2015-11-04 15:28 ` Paolo Bonzini
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