From: Marc Zyngier Date: Sun, 17 Jul 2016 10:34:53 +0000 (+0100) Subject: KVM: arm64: vgic-its: Fix vgic_its_check_device_id BE handling X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7e3963a51563d844fcd3bdc13e2847561b15e8de;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git KVM: arm64: vgic-its: Fix vgic_its_check_device_id BE handling The ITS tables are stored in LE format. If the host is reading a L1 table entry to check its validity, it must convert it to the CPU endianness. Signed-off-by: Marc Zyngier --- diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index d6697c4d81ec..2ac5927b1d91 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -707,6 +707,8 @@ static bool vgic_its_check_device_id(struct kvm *kvm, struct vgic_its *its, &indirect_ptr, sizeof(indirect_ptr))) return false; + indirect_ptr = le64_to_cpu(indirect_ptr); + /* check the valid bit of the first level entry */ if (!(indirect_ptr & BIT_ULL(63))) return false;