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i965: leave the top 4Gb of the high heap VMA unused

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This ports commit 9e7b0988d6 from anv
to i965.  Thanks to Lionel for noticing that it was missing!

Fixes: 01058a5522 i965: Add virtual memory allocator infrastructure to brw_bufmgr.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Kenneth Graunke 2019-05-03 12:02:41 -07:00
parent 17210c63a9
commit d568fcd0a0
1 changed files with 5 additions and 1 deletions
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6
src/mesa/drivers/dri/i965/brw_bufmgr.c
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@ -1732,8 +1732,12 @@ brw_bufmgr_init(struct gen_device_info *devinfo, int fd)
util_vma_heap_init(&bufmgr->vma_allocator[BRW_MEMZONE_LOW_4G],
PAGE_SIZE, _4GB_minus_1);
/* Leave the last 4GB out of the high vma range, so that no state
* base address + size can overflow 48 bits.
*/
util_vma_heap_init(&bufmgr->vma_allocator[BRW_MEMZONE_OTHER],
1 * _4GB, gtt_size - 1 * _4GB);
1 * _4GB, gtt_size - 2 * _4GB);
} else if (devinfo->gen >= 10) {
/* Softpin landed in 4.5, but GVT used an aliasing PPGTT until
* kernel commit 6b3816d69628becb7ff35978aa0751798b4a940a in