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Fix calculation of the execution buffer end in the mapped pages

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when it is spilled into the next page.

MFC after:	1 month
This commit is contained in:
Konstantin Belousov 2012-05-28 13:55:49 +00:00
parent f74d5a7a20
commit 886add7764
1 changed files with 3 additions and 3 deletions
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6
sys/dev/drm2/i915/i915_gem_execbuffer.c
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@ -1069,7 +1069,8 @@ i915_gem_fix_mi_batchbuffer_end(struct drm_i915_gem_object *batch_obj,
po_r -= 4;
mkva = pmap_mapdev_attr(trunc_page(po_r), 2 * PAGE_SIZE,
PAT_WRITE_COMBINING);
cmd = *(uint32_t *)(mkva + (po_r & PAGE_MASK));
po_r &= PAGE_MASK;
cmd = *(uint32_t *)(mkva + po_r);
if (cmd != MI_BATCH_BUFFER_END) {
/*
@ -1083,8 +1084,7 @@ i915_gem_fix_mi_batchbuffer_end(struct drm_i915_gem_object *batch_obj,
po_w = po_r;
DRM_DEBUG("batchbuffer does not end by MI_BATCH_BUFFER_END, overwriting last bo cmd !\n");
}
*(uint32_t *)(mkva + (po_w & PAGE_MASK)) = MI_BATCH_BUFFER_END;
*(uint32_t *)(mkva + po_w) = MI_BATCH_BUFFER_END;
}
pmap_unmapdev((vm_offset_t)mkva, 2 * PAGE_SIZE);