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authorJan Kiszka <jan.kiszka@siemens.com>2010-02-23 17:47:57 +0100
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 12:36:14 -0300
commitd2be1651b736002e0c76d7095d6c0ba77b4a897c (patch)
treefbbf39d27d894ce9e6d2f57cc252893fc6195065
parentc573cd22939e54fc1b8e672054a505048987a7cb (diff)
downloadlinux-linaro-stable-d2be1651b736002e0c76d7095d6c0ba77b4a897c.tar.gz
KVM: x86: Add KVM_CAP_X86_ROBUST_SINGLESTEP
This marks the guest single-step API improvement of 94fe45da and 91586a3b with a capability flag to allow reliable detection by user space. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: stable@kernel.org (2.6.33) Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/x86/kvm/x86.c1
-rw-r--r--include/linux/kvm.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c3d2acbbb91b..e46282a56565 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1570,6 +1570,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_HYPERV_VAPIC:
case KVM_CAP_HYPERV_SPIN:
case KVM_CAP_PCI_SEGMENT:
+ case KVM_CAP_X86_ROBUST_SINGLESTEP:
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index dfa54be881f4..60df9c84ecae 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -501,6 +501,7 @@ struct kvm_ioeventfd {
#define KVM_CAP_HYPERV_VAPIC 45
#define KVM_CAP_HYPERV_SPIN 46
#define KVM_CAP_PCI_SEGMENT 47
+#define KVM_CAP_X86_ROBUST_SINGLESTEP 51
#ifdef KVM_CAP_IRQ_ROUTING