From: Himal Prasad Ghimiray himal.prasad.ghimiray@intel.com
[ Upstream commit 9cb46b31f3d08ed3fce86349e8c12f96d7c88717 ]
Addressing potential overflow in result of multiplication of two lower precision (u32) operands before widening it to higher precision (u64).
-v2 Fix commit message and description. (Rodrigo)
Cc: Rodrigo Vivi rodrigo.vivi@intel.com Signed-off-by: Himal Prasad Ghimiray himal.prasad.ghimiray@intel.com Reviewed-by: Rodrigo Vivi rodrigo.vivi@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20240401175300.3823653-1-himal... Signed-off-by: Rodrigo Vivi rodrigo.vivi@intel.com (cherry picked from commit 34820967ae7b45411f8f4f737c2d63b0c608e0d7) Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/xe/xe_migrate.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c index 70480c3056021..7a6ad3469d748 100644 --- a/drivers/gpu/drm/xe/xe_migrate.c +++ b/drivers/gpu/drm/xe/xe_migrate.c @@ -216,7 +216,7 @@ static int xe_migrate_prepare_vm(struct xe_tile *tile, struct xe_migrate *m, if (vm->flags & XE_VM_FLAG_64K && level == 1) flags = XE_PDE_64K;
- entry = vm->pt_ops->pde_encode_bo(bo, map_ofs + (level - 1) * + entry = vm->pt_ops->pde_encode_bo(bo, map_ofs + (u64)(level - 1) * XE_PAGE_SIZE, pat_index); xe_map_wr(xe, &bo->vmap, map_ofs + XE_PAGE_SIZE * level, u64, entry | flags); @@ -224,7 +224,7 @@ static int xe_migrate_prepare_vm(struct xe_tile *tile, struct xe_migrate *m,
/* Write PDE's that point to our BO. */ for (i = 0; i < num_entries - num_level; i++) { - entry = vm->pt_ops->pde_encode_bo(bo, i * XE_PAGE_SIZE, + entry = vm->pt_ops->pde_encode_bo(bo, (u64)i * XE_PAGE_SIZE, pat_index);
xe_map_wr(xe, &bo->vmap, map_ofs + XE_PAGE_SIZE + @@ -280,7 +280,7 @@ static int xe_migrate_prepare_vm(struct xe_tile *tile, struct xe_migrate *m, #define VM_SA_UPDATE_UNIT_SIZE (XE_PAGE_SIZE / NUM_VMUSA_UNIT_PER_PAGE) #define NUM_VMUSA_WRITES_PER_UNIT (VM_SA_UPDATE_UNIT_SIZE / sizeof(u64)) drm_suballoc_manager_init(&m->vm_update_sa, - (map_ofs / XE_PAGE_SIZE - NUM_KERNEL_PDE) * + (size_t)(map_ofs / XE_PAGE_SIZE - NUM_KERNEL_PDE) * NUM_VMUSA_UNIT_PER_PAGE, 0);
m->pt_bo = bo; @@ -479,7 +479,7 @@ static void emit_pte(struct xe_migrate *m, struct xe_vm *vm = m->q->vm; u16 pat_index; u32 ptes; - u64 ofs = at_pt * XE_PAGE_SIZE; + u64 ofs = (u64)at_pt * XE_PAGE_SIZE; u64 cur_ofs;
/* Indirect access needs compression enabled uncached PAT index */