From: CQ Tang <[email protected]>

Adjust the page offset with region start dma address.

Cc: Joonas Lahtinen <[email protected]>
Cc: Matthew Auld <[email protected]>
Cc: Abdiel Janulgue <[email protected]>
Cc: Niranjana Vishwanathapura <[email protected]>
Cc: Sudeep Dutt <[email protected]>
Signed-off-by: CQ Tang <[email protected]>
---
 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 678ddec3237f..07d53c4e1a2c 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1033,7 +1033,9 @@ 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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