Since synchronising the PTE after assignment is a manual step, use the newly exported interface to flush the PTE after assigning via alloc_vm_area().
Reported-by: Pavel Machek pavel@ucw.cz References: 2ba3e6947aed ("mm/vmalloc: track which page-table levels were modified") Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: Andrew Morton akpm@linux-foundation.org Cc: Joerg Roedel jroedel@suse.de Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Dave Airlie airlied@redhat.com Cc: Joonas Lahtinen joonas.lahtinen@linux.intel.com Cc: Rodrigo Vivi rodrigo.vivi@intel.com Cc: Pavel Machek pavel@ucw.cz Cc: stable@vger.kernel.org # v5.8+ --- drivers/gpu/drm/i915/gem/i915_gem_pages.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c index 7050519c87a4..0fee67f34d74 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c @@ -304,6 +304,7 @@ static void *i915_gem_object_map(struct drm_i915_gem_object *obj, for_each_sgt_daddr(addr, iter, sgt) **ptes++ = iomap_pte(iomap, addr, pgprot); } + flush_vm_area(area);
if (mem != stack) kvfree(mem);