diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2025-10-31 10:32:24 -0700 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2025-11-07 09:22:10 -0700 |
| commit | b6cfddd26ec55e865b4715f73e9bbb17a15091ed (patch) | |
| tree | 83f2491a3fe81edd06c9e845c08eaa865da0144c /drivers | |
| parent | 7c3643f204edf1c5edb12b36b34838683ee5f8dc (diff) | |
| download | net-b6cfddd26ec55e865b4715f73e9bbb17a15091ed.tar.gz | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cxl/core/region.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index b06fee1978ba46..41b64d871c5a1e 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -3702,6 +3702,7 @@ static int cxl_region_debugfs_poison_inject(void *data, u64 offset) if (validate_region_offset(cxlr, offset)) return -EINVAL; + offset -= cxlr->params.cache_size; rc = region_offset_to_dpa_result(cxlr, offset, &result); if (rc || !result.cxlmd || result.dpa == ULLONG_MAX) { dev_dbg(&cxlr->dev, @@ -3734,6 +3735,7 @@ static int cxl_region_debugfs_poison_clear(void *data, u64 offset) if (validate_region_offset(cxlr, offset)) return -EINVAL; + offset -= cxlr->params.cache_size; rc = region_offset_to_dpa_result(cxlr, offset, &result); if (rc || !result.cxlmd || result.dpa == ULLONG_MAX) { dev_dbg(&cxlr->dev, |