[src/trunk]: src/sys/external/bsd/drm2/dist/drm/i915/gem i915: Zero the kerne...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9da87df90a18
branches:  trunk
changeset: 1028782:9da87df90a18
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 12:00:57 2021 +0000

description:
i915: Zero the kernel's ptes before freeing the va.

diffstat:

 sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_pages.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r e2e756afacab -r 9da87df90a18 sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_pages.c
--- a/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_pages.c  Sun Dec 19 12:00:48 2021 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_pages.c  Sun Dec 19 12:00:57 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: i915_gem_pages.c,v 1.5 2021/12/19 11:33:30 riastradh Exp $     */
+/*     $NetBSD: i915_gem_pages.c,v 1.6 2021/12/19 12:00:57 riastradh Exp $     */
 
 /*
  * SPDX-License-Identifier: MIT
@@ -7,7 +7,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: i915_gem_pages.c,v 1.5 2021/12/19 11:33:30 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: i915_gem_pages.c,v 1.6 2021/12/19 12:00:57 riastradh Exp $");
 
 #include "i915_drv.h"
 #include "i915_gem_object.h"
@@ -171,6 +171,8 @@
 static void unmap_object(struct drm_i915_gem_object *obj, void *ptr)
 {
 #ifdef __NetBSD__
+       pmap_kremove((vaddr_t)ptr, obj->base.size);
+       pmap_update(pmap_kernel());
        uvm_km_free(kernel_map, (vaddr_t)ptr, obj->base.size, UVM_KMF_VAONLY);
 #else
        if (is_vmalloc_addr(ptr))