From: Marc Zyngier Date: Sun, 17 Jul 2016 11:15:19 +0000 (+0100) Subject: KVM: arm64: vgic-its: Fix misleading nr_entries in vgic_its_check_device_id X-Git-Tag: v4.8-rc1~11^2~4^2~15 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b90338b7cbb7c8cad8dbd3c4de4e64180ce0d88b;p=platform%2Fkernel%2Flinux-exynos.git KVM: arm64: vgic-its: Fix misleading nr_entries in vgic_its_check_device_id The nr_entries variable in vgic_its_check_device_id actually describe the size of the L1 table, and not the number of entries in this table. Rename it to l1_tbl_size, so that we can now change the code with a better understanding of what is what. Signed-off-by: Marc Zyngier --- diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 2ac5927..268a0c7 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -687,18 +687,18 @@ static bool vgic_its_check_device_id(struct kvm *kvm, struct vgic_its *its, int device_id) { u64 r = its->baser_device_table; - int nr_entries = GITS_BASER_NR_PAGES(r) * SZ_64K; + int l1_tbl_size = GITS_BASER_NR_PAGES(r) * SZ_64K; int index; u64 indirect_ptr; gfn_t gfn; if (!(r & GITS_BASER_INDIRECT)) - return device_id < (nr_entries / GITS_BASER_ENTRY_SIZE(r)); + return device_id < (l1_tbl_size / GITS_BASER_ENTRY_SIZE(r)); /* calculate and check the index into the 1st level */ index = device_id / (SZ_64K / GITS_BASER_ENTRY_SIZE(r)); - if (index >= (nr_entries / sizeof(u64))) + if (index >= (l1_tbl_size / sizeof(u64))) return false; /* Each 1st level entry is represented by a 64-bit value. */