diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2025-02-26 09:21:18 -0700 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2025-02-26 13:45:22 -0700 |
| commit | 84b25926fa7abb5b634d4af9544f47ab0aabc399 (patch) | |
| tree | 90acdb5c0c20b1fb1cea5bf0cc3f21c674369ed5 /drivers | |
| parent | Linux 6.14-rc1 (diff) | |
| download | linux-84b25926fa7abb5b634d4af9544f47ab0aabc399.tar.gz linux-84b25926fa7abb5b634d4af9544f47ab0aabc399.zip | |
acpi: numa: Add support to enumerate and store extended linear address mode
Store the address mode as part of the cache attriutes. Export the mode
attribute to sysfs as all other cache attributes.
Link: https://lore.kernel.org/linux-cxl/668333b17e4b2_5639294fd@dwillia2-xfh.jf.intel.com.notmuch/
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://patch.msgid.link/20250226162224.3633792-2-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/numa/hmat.c | 5 | ||||
| -rw-r--r-- | drivers/base/node.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index bfbb08b1e6af..2630511937f5 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/numa/hmat.c @@ -506,6 +506,11 @@ static __init int hmat_parse_cache(union acpi_subtable_headers *header, switch ((attrs & ACPI_HMAT_CACHE_ASSOCIATIVITY) >> 8) { case ACPI_HMAT_CA_DIRECT_MAPPED: tcache->cache_attrs.indexing = NODE_CACHE_DIRECT_MAP; + /* Extended Linear mode is only valid if cache is direct mapped */ + if (cache->address_mode == ACPI_HMAT_CACHE_MODE_EXTENDED_LINEAR) { + tcache->cache_attrs.address_mode = + NODE_CACHE_ADDR_MODE_EXTENDED_LINEAR; + } break; case ACPI_HMAT_CA_COMPLEX_CACHE_INDEXING: tcache->cache_attrs.indexing = NODE_CACHE_INDEXED; diff --git a/drivers/base/node.c b/drivers/base/node.c index 0ea653fa3433..cd13ef287011 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -244,12 +244,14 @@ CACHE_ATTR(size, "%llu") CACHE_ATTR(line_size, "%u") CACHE_ATTR(indexing, "%u") CACHE_ATTR(write_policy, "%u") +CACHE_ATTR(address_mode, "%#x") static struct attribute *cache_attrs[] = { &dev_attr_indexing.attr, &dev_attr_size.attr, &dev_attr_line_size.attr, &dev_attr_write_policy.attr, + &dev_attr_address_mode.attr, NULL, }; ATTRIBUTE_GROUPS(cache); |