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KVM: x86: Add support for saving&restoring debug registers

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So far user space was not able to save and restore debug registers for
migration or after reset. Plug this hole.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka
2010-02-15 10:45:43 +01:00
committed by Avi Kivity
parent 48005f64d0
commit a1efbe77c1
4 changed files with 101 additions and 0 deletions
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10
arch/x86/include/asm/kvm.h
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@@ -21,6 +21,7 @@
#define __KVM_HAVE_PIT_STATE2
#define __KVM_HAVE_XEN_HVM
#define __KVM_HAVE_VCPU_EVENTS
#define __KVM_HAVE_DEBUGREGS
/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256
@@ -289,4 +290,13 @@ struct kvm_vcpu_events {
__u32 reserved[10];
};
/* for KVM_GET/SET_DEBUGREGS */
struct kvm_debugregs {
__u64 db[4];
__u64 dr6;
__u64 dr7;
__u64 flags;
__u64 reserved[9];
};
#endif /* _ASM_X86_KVM_H */