[src/trunk]: src/sys/external/bsd/drm2/dist/drm/i915/gt i915: Use pmap_pv_pro...

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

details:   https://anonhg.NetBSD.org/src/rev/2615930a8e42
branches:  trunk
changeset: 1028908:2615930a8e42
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 12:27:17 2021 +0000

description:
i915: Use pmap_pv_protect on the paddrs for unmap_mapping_range.

diffstat:

 sys/external/bsd/drm2/dist/drm/i915/gt/intel_reset.c |  12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diffs (34 lines):

diff -r 7f5b51776dac -r 2615930a8e42 sys/external/bsd/drm2/dist/drm/i915/gt/intel_reset.c
--- a/sys/external/bsd/drm2/dist/drm/i915/gt/intel_reset.c      Sun Dec 19 12:27:09 2021 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/gt/intel_reset.c      Sun Dec 19 12:27:17 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: intel_reset.c,v 1.4 2021/12/19 11:49:11 riastradh Exp $        */
+/*     $NetBSD: intel_reset.c,v 1.5 2021/12/19 12:27:17 riastradh Exp $        */
 
 /*
  * SPDX-License-Identifier: MIT
@@ -7,7 +7,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: intel_reset.c,v 1.4 2021/12/19 11:49:11 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: intel_reset.c,v 1.5 2021/12/19 12:27:17 riastradh Exp $");
 
 #include <linux/sched/mm.h>
 #include <linux/stop_machine.h>
@@ -711,9 +711,13 @@
                vma_offset = vma->ggtt_view.partial.offset << PAGE_SHIFT;
 
 #ifdef __NetBSD__
+               __USE(vma_offset);
                __USE(node);
-               __USE(vma_offset);
-               panic("NYI");
+               paddr_t pa = gt->i915->ggtt.gmadr.start + vma->node.start;
+               vsize_t npgs = vma->size >> PAGE_SHIFT;
+               while (npgs --> 0)
+                       pmap_pv_protect(pa + (npgs << PAGE_SHIFT),
+                           VM_PROT_NONE);
 #else
                unmap_mapping_range(gt->i915->drm.anon_inode->i_mapping,
                                    drm_vma_node_offset_addr(node) + vma_offset,