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authorPeter Xu <peterx@redhat.com>2020-05-05 18:47:50 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2020-05-07 13:13:40 +0300
commitb9b2782cd55aaf5a65573df99376cf391941cb66 (patch)
tree85e68a9c6ae3c373263ec9b9979f5bb28b8a74b9
parent8ffdaf9155ebe517cdec5edbcca19ba6e7ee9c3c (diff)
downloadlinux-b9b2782cd55aaf5a65573df99376cf391941cb66.tar.xz
KVM: X86: Declare KVM_CAP_SET_GUEST_DEBUG properly
KVM_CAP_SET_GUEST_DEBUG should be supported for x86 however it's not declared as supported. My wild guess is that userspaces like QEMU are using "#ifdef KVM_CAP_SET_GUEST_DEBUG" to check for the capability instead, but that could be wrong because the compilation host may not be the runtime host. The userspace might still want to keep the old "#ifdef" though to not break the guest debug on old kernels. Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20200505154750.126300-1-peterx@redhat.com> [Do the same for PPC and s390. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/powerpc/kvm/powerpc.c1
-rw-r--r--arch/s390/kvm/kvm-s390.c1
-rw-r--r--arch/x86/kvm/x86.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index e15166b0a16d..ad2f172c26a6 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -521,6 +521,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_IOEVENTFD:
case KVM_CAP_DEVICE_CTRL:
case KVM_CAP_IMMEDIATE_EXIT:
+ case KVM_CAP_SET_GUEST_DEBUG:
r = 1;
break;
case KVM_CAP_PPC_GUEST_DEBUG_SSTEP:
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 5dcf9ff12828..d05bb040fd42 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -545,6 +545,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_S390_AIS:
case KVM_CAP_S390_AIS_MIGRATION:
case KVM_CAP_S390_VCPU_RESETS:
+ case KVM_CAP_SET_GUEST_DEBUG:
r = 1;
break;
case KVM_CAP_S390_HPAGE_1M:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8d296e3d0d56..d786c7d27ce5 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3372,6 +3372,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_GET_MSR_FEATURES:
case KVM_CAP_MSR_PLATFORM_INFO:
case KVM_CAP_EXCEPTION_PAYLOAD:
+ case KVM_CAP_SET_GUEST_DEBUG:
r = 1;
break;
case KVM_CAP_SYNC_REGS: