As vgic_its_check_id() computes the device/collection entry's GPA, let's return it so that new callers can retrieve it easily.
Signed-off-by: Eric Auger <[email protected]> --- v3 -> v4: - check eaddr is not NULL to allow passing NULL eaddr parameter to vgic_its_check_id v2: new --- virt/kvm/arm/vgic/vgic-its.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index df984b6..b907e3c 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -629,7 +629,8 @@ static int vgic_its_cmd_handle_movi(struct kvm *kvm, struct vgic_its *its, * is actually valid (covered by a memslot and guest accessible). * For this we have to read the respective first level entry. */ -static bool vgic_its_check_id(struct vgic_its *its, u64 baser, u32 id) +static bool vgic_its_check_id(struct vgic_its *its, u64 baser, u32 id, + gpa_t *eaddr) { int l1_tbl_size = GITS_BASER_NR_PAGES(baser) * SZ_64K; int index; @@ -649,6 +650,8 @@ static bool vgic_its_check_id(struct vgic_its *its, u64 baser, u32 id) addr = BASER_ADDRESS(baser) + id * esz; gfn = addr >> PAGE_SHIFT; + if (eaddr) + *eaddr = addr; return kvm_is_visible_gfn(its->dev->kvm, gfn); } @@ -681,6 +684,8 @@ static bool vgic_its_check_id(struct vgic_its *its, u64 baser, u32 id) indirect_ptr += index * esz; gfn = indirect_ptr >> PAGE_SHIFT; + if (eaddr) + *eaddr = indirect_ptr; return kvm_is_visible_gfn(its->dev->kvm, gfn); } @@ -690,7 +695,7 @@ static int vgic_its_alloc_collection(struct vgic_its *its, { struct its_collection *collection; - if (!vgic_its_check_id(its, its->baser_coll_table, coll_id)) + if (!vgic_its_check_id(its, its->baser_coll_table, coll_id, NULL)) return E_ITS_MAPC_COLLECTION_OOR; collection = kzalloc(sizeof(*collection), GFP_KERNEL); @@ -905,7 +910,7 @@ static int vgic_its_cmd_handle_mapd(struct kvm *kvm, struct vgic_its *its, gpa_t itt_addr = its_cmd_get_ittaddr(its_cmd) << 8; struct its_device *device; - if (!vgic_its_check_id(its, its->baser_device_table, device_id)) + if (!vgic_its_check_id(its, its->baser_device_table, device_id, NULL)) return E_ITS_MAPD_DEVICE_OOR; if (valid && nb_eventid_bits > VITS_TYPER_IDBITS) -- 2.5.5 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
