KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_guest_debug
Move vcpu_load() and vcpu_put() into the architecture specific
implementations of kvm_arch_vcpu_ioctl_set_guest_debug().
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 5c7f657..d7e3299 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -361,10 +361,16 @@
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
+ int ret = 0;
+
+ vcpu_load(vcpu);
+
trace_kvm_set_guest_debug(vcpu, dbg->control);
- if (dbg->control & ~KVM_GUESTDBG_VALID_MASK)
- return -EINVAL;
+ if (dbg->control & ~KVM_GUESTDBG_VALID_MASK) {
+ ret = -EINVAL;
+ goto out;
+ }
if (dbg->control & KVM_GUESTDBG_ENABLE) {
vcpu->guest_debug = dbg->control;
@@ -378,7 +384,10 @@
/* If not enabled clear all flags */
vcpu->guest_debug = 0;
}
- return 0;
+
+out:
+ vcpu_put(vcpu);
+ return ret;
}
int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 0476516..234531d 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -755,7 +755,9 @@
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
+ vcpu_load(vcpu);
vcpu->guest_debug = dbg->control;
+ vcpu_put(vcpu);
return 0;
}
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index b5f4651..6038e2e 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -2016,12 +2016,15 @@
{
struct debug_reg *dbg_reg;
int n, b = 0, w = 0;
+ int ret = 0;
+
+ vcpu_load(vcpu);
if (!(dbg->control & KVM_GUESTDBG_ENABLE)) {
vcpu->arch.dbg_reg.dbcr0 = 0;
vcpu->guest_debug = 0;
kvm_guest_protect_msr(vcpu, MSR_DE, false);
- return 0;
+ goto out;
}
kvm_guest_protect_msr(vcpu, MSR_DE, true);
@@ -2053,8 +2056,9 @@
#endif
if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP))
- return 0;
+ goto out;
+ ret = -EINVAL;
for (n = 0; n < (KVMPPC_BOOKE_IAC_NUM + KVMPPC_BOOKE_DAC_NUM); n++) {
uint64_t addr = dbg->arch.bp[n].addr;
uint32_t type = dbg->arch.bp[n].type;
@@ -2065,21 +2069,24 @@
if (type & ~(KVMPPC_DEBUG_WATCH_READ |
KVMPPC_DEBUG_WATCH_WRITE |
KVMPPC_DEBUG_BREAKPOINT))
- return -EINVAL;
+ goto out;
if (type & KVMPPC_DEBUG_BREAKPOINT) {
/* Setting H/W breakpoint */
if (kvmppc_booke_add_breakpoint(dbg_reg, addr, b++))
- return -EINVAL;
+ goto out;
} else {
/* Setting H/W watchpoint */
if (kvmppc_booke_add_watchpoint(dbg_reg, addr,
type, w++))
- return -EINVAL;
+ goto out;
}
}
- return 0;
+ ret = 0;
+out:
+ vcpu_put(vcpu);
+ return ret;
}
void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 4e6304d..1c82dda 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2801,13 +2801,19 @@
{
int rc = 0;
+ vcpu_load(vcpu);
+
vcpu->guest_debug = 0;
kvm_s390_clear_bp_data(vcpu);
- if (dbg->control & ~VALID_GUESTDBG_FLAGS)
- return -EINVAL;
- if (!sclp.has_gpere)
- return -EINVAL;
+ if (dbg->control & ~VALID_GUESTDBG_FLAGS) {
+ rc = -EINVAL;
+ goto out;
+ }
+ if (!sclp.has_gpere) {
+ rc = -EINVAL;
+ goto out;
+ }
if (dbg->control & KVM_GUESTDBG_ENABLE) {
vcpu->guest_debug = dbg->control;
@@ -2827,6 +2833,8 @@
atomic_andnot(CPUSTAT_P, &vcpu->arch.sie_block->cpuflags);
}
+out:
+ vcpu_put(vcpu);
return rc;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 080e00d..9ef0b92 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7625,6 +7625,8 @@
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)
@@ -7670,7 +7672,7 @@
r = 0;
out:
-
+ vcpu_put(vcpu);
return r;
}
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 37217ec..b44762f 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2673,9 +2673,7 @@
r = -EFAULT;
if (copy_from_user(&dbg, argp, sizeof(dbg)))
goto out;
- vcpu_load(vcpu);
r = kvm_arch_vcpu_ioctl_set_guest_debug(vcpu, &dbg);
- vcpu_put(vcpu);
break;
}
case KVM_SET_SIGNAL_MASK: {