From ff44f1a3737bfda3cac294b8e92d8ec5ddf3abf5 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Fri, 12 Mar 2010 15:20:49 +0100 Subject: KVM: x86: Add debug register saving and restoring Make use of the new KVM_GET/SET_DEBUGREGS to save/restore the x86 debug registers. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- kvm-all.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'kvm-all.c') diff --git a/kvm-all.c b/kvm-all.c index 2ede4b9ea7..d05011547d 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -64,6 +64,7 @@ struct KVMState int migration_log; int vcpu_events; int robust_singlestep; + int debugregs; #ifdef KVM_CAP_SET_GUEST_DEBUG struct kvm_sw_breakpoint_head kvm_sw_breakpoints; #endif @@ -664,6 +665,11 @@ int kvm_init(int smp_cpus) kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); #endif + s->debugregs = 0; +#ifdef KVM_CAP_DEBUGREGS + s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); +#endif + ret = kvm_arch_init(s, smp_cpus); if (ret < 0) goto err; @@ -939,6 +945,11 @@ int kvm_has_robust_singlestep(void) return kvm_state->robust_singlestep; } +int kvm_has_debugregs(void) +{ + return kvm_state->debugregs; +} + void kvm_setup_guest_memory(void *start, size_t size) { if (!kvm_has_sync_mmu()) { -- cgit v1.2.3-55-g7522