diff options
| author | Alison Schofield <alison.schofield@intel.com> | 2024-04-30 20:28:03 +0300 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2024-04-30 22:24:26 +0300 |
| commit | 2042d11cb57b7e0cbda7910e5ff80e9e8bf0ae17 (patch) | |
| tree | f363227c3342e114b23a8f9837c3b3f44f8e826a /drivers/cxl | |
| parent | e67572cd2204894179d89bd7b984072f19313b03 (diff) | |
| download | linux-2042d11cb57b7e0cbda7910e5ff80e9e8bf0ae17.tar.xz | |
cxl/trace: Correct DPA field masks for general_media & dram events
The length of Physical Address in General Media and DRAM event
records is 64-bit, so the field mask for extracting the DPA should
be 64-bit also, otherwise the trace event reports DPA's with the
upper 32 bits of a DPA address masked off. If users do DPA-to-HPA
translations this could lead to incorrect page retirement decisions.
Use GENMASK_ULL() for CXL_DPA_MASK to get all the DPA address bits.
Tidy up CXL_DPA_FLAGS_MASK by using GENMASK() to only mask the exact
flag bits.
These bits are defined as part of the event record physical address
descriptions of General Media and DRAM events in CXL Spec 3.1
Section 8.2.9.2 Events.
Fixes: d54a531a430b ("cxl/mem: Trace General Media Event Record")
Co-developed-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/2867fc43c57720a4a15a3179431829b8dbd2dc16.1714496730.git.alison.schofield@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'drivers/cxl')
| -rw-r--r-- | drivers/cxl/core/trace.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cxl/core/trace.h b/drivers/cxl/core/trace.h index e5f13260fc52..7c5cd069f10c 100644 --- a/drivers/cxl/core/trace.h +++ b/drivers/cxl/core/trace.h @@ -253,8 +253,8 @@ TRACE_EVENT(cxl_generic_event, * DRAM Event Record * CXL rev 3.0 section 8.2.9.2.1.2; Table 8-44 */ -#define CXL_DPA_FLAGS_MASK 0x3F -#define CXL_DPA_MASK (~CXL_DPA_FLAGS_MASK) +#define CXL_DPA_FLAGS_MASK GENMASK(1, 0) +#define CXL_DPA_MASK GENMASK_ULL(63, 6) #define CXL_DPA_VOLATILE BIT(0) #define CXL_DPA_NOT_REPAIRABLE BIT(1) |