tree eb24441cbebf6d8523ddd9ea1323ab052a431614
parent fd451b90e78c4178bcfc5072f2b2b637500c109a
author Michael S. Tsirkin <mst@redhat.com> 1456673527 +0200
committer Marc Zyngier <marc.zyngier@arm.com> 1456739800 +0000

arm/arm64: KVM: Fix ioctl error handling

Calling return copy_to_user(...) in an ioctl will not
do the right thing if there's a pagefault:
copy_to_user returns the number of bytes not copied
in this case.

Fix up kvm to do
	return copy_to_user(...)) ?  -EFAULT : 0;

everywhere.

Cc: stable@vger.kernel.org
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>