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 <pa...@ucw.cz> References: 2ba3e6947aed ("mm/vmalloc: track which page-table levels were modified") Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Joerg Roedel <jroe...@suse.de> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Dave Airlie <airl...@redhat.com> Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.v...@intel.com> Cc: Pavel Machek <pa...@ucw.cz> Cc: <sta...@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); -- 2.20.1