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drm/i915/error: Fix object page offset within a region

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io_mapping_map_wc() expects the offset to be relative to the iomapping
base address. Currently we just pass in the physical address for the
page which only works if the region.start starts at zero.

Signed-off-by: CQ Tang <cq.tang@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20210119133106.66294-2-matthew.auld@intel.com
This commit is contained in:
CQ Tang 2021-01-19 13:31:04 +00:00 committed by Chris Wilson
parent 23b2afc6ee
commit c97498363f
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/i915/i915_gpu_error.c
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@ -1051,7 +1051,9 @@ i915_vma_coredump_create(const struct intel_gt *gt,
for_each_sgt_daddr(dma, iter, vma->pages) {
void __iomem *s;
s = io_mapping_map_wc(&mem->iomap, dma, PAGE_SIZE);
s = io_mapping_map_wc(&mem->iomap,
dma - mem->region.start,
PAGE_SIZE);
ret = compress_page(compress,
(void __force *)s, dst,
true);