From 8ab30c1538b14424015e45063c41d509b24c1dea Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Tue, 7 Jul 2015 17:29:53 +0100 Subject: KVM: add comments for kvm_debug_exit_arch struct MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Bring into line with the comments for the other structures and their KVM_EXIT_* cases. Also update api.txt to reflect use in kvm_run documentation. Signed-off-by: Alex Bennée Reviewed-by: David Hildenbrand Reviewed-by: Andrew Jones Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier --- include/uapi/linux/kvm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 716ad4ae4d4b..4ab3c6a8d563 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -237,6 +237,7 @@ struct kvm_run { __u32 count; __u64 data_offset; /* relative to kvm_run start */ } io; + /* KVM_EXIT_DEBUG */ struct { struct kvm_debug_exit_arch arch; } debug; @@ -285,6 +286,7 @@ struct kvm_run { __u32 data; __u8 is_write; } dcr; + /* KVM_EXIT_INTERNAL_ERROR */ struct { __u32 suberror; /* Available with KVM_CAP_INTERNAL_ERROR_DATA: */ @@ -295,6 +297,7 @@ struct kvm_run { struct { __u64 gprs[32]; } osi; + /* KVM_EXIT_PAPR_HCALL */ struct { __u64 nr; __u64 ret; -- cgit v1.2.3 From 5540546bc93b49f98a0466fe3f96615286c76574 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Tue, 7 Jul 2015 17:30:01 +0100 Subject: KVM: arm64: guest debug, HW assisted debug support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This adds support for userspace to control the HW debug registers for guest debug. In the debug ioctl we copy an IMPDEF registers into a new register set called host_debug_state. We use the recently introduced vcpu parameter debug_ptr to select which register set is copied into the real registers when world switch occurs. I've made some helper functions from hw_breakpoint.c more widely available for re-use. As with single step we need to tweak the guest registers to enable the exceptions so we need to save and restore those bits. Two new capabilities have been added to the KVM_EXTENSION ioctl to allow userspace to query the number of hardware break and watch points available on the host hardware. Signed-off-by: Alex Bennée Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier --- include/uapi/linux/kvm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 4ab3c6a8d563..a1e08e7bbf20 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -820,6 +820,8 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_DISABLE_QUIRKS 116 #define KVM_CAP_X86_SMM 117 #define KVM_CAP_MULTI_ADDRESS_SPACE 118 +#define KVM_CAP_GUEST_DEBUG_HW_BPS 119 +#define KVM_CAP_GUEST_DEBUG_HW_WPS 120 #ifdef KVM_CAP_IRQ_ROUTING -- cgit v1.2.3