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authorWill Deacon <will.deacon@arm.com>2014-08-26 15:13:23 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2014-08-27 22:49:45 +0200
commitbd218bce92d3868ba4fe5e9e3eb8199d2aa614af (patch)
tree18c3956239fc631afa20162018c40cf2c97e9f12 /arch/arm64/kvm
parent18d457661fb9fa69352822ab98d39331c3d0e571 (diff)
KVM: ARM/arm64: return -EFAULT if copy_from_user fails in set_timer_reg
We currently return the number of bytes not copied if set_timer_reg fails, which is almost certainly not what userspace would like. This patch returns -EFAULT instead. Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/kvm')
-rw-r--r--arch/arm64/kvm/guest.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 8d1ec2887a26..76794692c20b 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -174,7 +174,7 @@ static int set_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
ret = copy_from_user(&val, uaddr, KVM_REG_SIZE(reg->id));
if (ret != 0)
- return ret;
+ return -EFAULT;
return kvm_arm_timer_set_reg(vcpu, reg->id, val);
}