Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
cxl: Adjust offset calculation for poison injection
The HPA to DPA translation for poison injection assumes that the
base address starts from where the CXL region begins. When the
extended linear cache is active, the offset can be within the DRAM
region. Adjust the offset so that it correctly reflects the offset
within the CXL region.
[ dj: Add fixes tag from Alison ]
Fixes: c3dd67681c70 ("cxl/region: Add inject and clear poison by region offset")
Link: https://patch.msgid.link/20251031173224.3537030-5-dave.jiang@intel.com
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
+2
+2
drivers/cxl/core/region.c
+2
drivers/cxl/core/region.c
···
3702
3702
if (validate_region_offset(cxlr, offset))
3703
3703
return -EINVAL;
3704
3704
3705
+
offset -= cxlr->params.cache_size;
3705
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rc = region_offset_to_dpa_result(cxlr, offset, &result);
3706
3707
if (rc || !result.cxlmd || result.dpa == ULLONG_MAX) {
3707
3708
dev_dbg(&cxlr->dev,
···
3735
3734
if (validate_region_offset(cxlr, offset))
3736
3735
return -EINVAL;
3737
3736
3737
+
offset -= cxlr->params.cache_size;
3738
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rc = region_offset_to_dpa_result(cxlr, offset, &result);
3739
3739
if (rc || !result.cxlmd || result.dpa == ULLONG_MAX) {
3740
3740
dev_dbg(&cxlr->dev,