[RFC PATCH v6 60/92] kvm: x86: add kvm_arch_vcpu_set_guest_debug()
From: Adalbert Lazăr <hidden>
Date: 2019-08-09 16:04:01
Also in:
kvm, linux-mm
Subsystem:
kernel virtual machine (kvm), kernel virtual machine for x86 (kvm/x86), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Paolo Bonzini, Sean Christopherson, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
This function is need in order to intercept breakpoints and send KVMI_EVENT_BREAKPOINT events to the introspection tool. Signed-off-by: Adalbert Lazăr <redacted> --- arch/x86/kvm/x86.c | 18 +++++++++++++----- include/linux/kvm_host.h | 2 ++ 2 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 278a286ba262..e633f297e86d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c@@ -8747,14 +8747,12 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, return ret; } -int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, - struct kvm_guest_debug *dbg) +int kvm_arch_vcpu_set_guest_debug(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg) { unsigned long rflags; int i, r; - vcpu_load(vcpu); - if (dbg->control & (KVM_GUESTDBG_INJECT_DB | KVM_GUESTDBG_INJECT_BP)) { r = -EBUSY; if (vcpu->arch.exception.pending)
@@ -8800,10 +8798,20 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, r = 0; out: - vcpu_put(vcpu); return r; } +int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg) +{ + int ret; + + vcpu_load(vcpu); + ret = kvm_arch_vcpu_set_guest_debug(vcpu, dbg); + vcpu_put(vcpu); + return ret; +} + /* * Translate a guest virtual address to a guest physical address. */
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 3aad3b96107b..691c24598b4d 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h@@ -804,6 +804,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, struct kvm_mp_state *mp_state); int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg); +int kvm_arch_vcpu_set_guest_debug(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg); int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); void kvm_vcpu_ioctl_x86_get_xsave(struct kvm_vcpu *vcpu, struct kvm_xsave *guest_xsave);
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