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drm/xe/query: zero the region info

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There are also some reserved fields in here which are not currently
cleared when handing back to userspace. Otherwise we might run into
issues if we later wish to use them.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Lucas De Marchi lucas.demarchi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Matthew Auld 2023-02-15 10:28:45 +00:00 committed by Rodrigo Vivi
parent 6062acc1b8
commit b47b0ef1ba
1 changed files with 1 additions and 5 deletions
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6
drivers/gpu/drm/xe/xe_query.c
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@ -115,16 +115,13 @@ static int query_memory_usage(struct xe_device *xe,
return -EINVAL;
}
usage = kmalloc(size, GFP_KERNEL);
usage = kzalloc(size, GFP_KERNEL);
if (XE_IOCTL_ERR(xe, !usage))
return -ENOMEM;
usage->pad = 0;
man = ttm_manager_type(&xe->ttm, XE_PL_TT);
usage->regions[0].mem_class = XE_MEM_REGION_CLASS_SYSMEM;
usage->regions[0].instance = 0;
usage->regions[0].pad = 0;
usage->regions[0].min_page_size = PAGE_SIZE;
usage->regions[0].max_page_size = PAGE_SIZE;
usage->regions[0].total_size = man->size << PAGE_SHIFT;
@ -138,7 +135,6 @@ static int query_memory_usage(struct xe_device *xe,
XE_MEM_REGION_CLASS_VRAM;
usage->regions[usage->num_regions].instance =
usage->num_regions;
usage->regions[usage->num_regions].pad = 0;
usage->regions[usage->num_regions].min_page_size =
xe->info.vram_flags & XE_VRAM_FLAGS_NEED64K ?
SZ_64K : PAGE_SIZE;