From: CQ Tang <cq.tang@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gpu_error.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 8b163ee1b86d..f962693404b7 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -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);
--
2.26.2
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