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| author | Babu Moger <babu.moger@amd.com> | 2025-11-12 18:57:29 -0600 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-11-21 22:04:59 +0100 |
| commit | 7923ae7698cf9728501974d76d8ea712686281bc (patch) | |
| tree | cdc16590540510fbc2823b7865a03761f6e5f1de /drivers/pci/controller/dwc/pcie-qcom-common.c | |
| parent | 4d4840b1251acc194e4b59d9a5bfba23cd573ed3 (diff) | |
x86,fs/resctrl: Detect io_alloc feature
AMD's SDCIAE (SDCI Allocation Enforcement) PQE feature enables system software
to control the portions of L3 cache used for direct insertion of data from I/O
devices into the L3 cache.
Introduce a generic resctrl cache resource property "io_alloc_capable" as the
first part of the new "io_alloc" resctrl feature that will support AMD's
SDCIAE. Any architecture can set a cache resource as "io_alloc_capable" if
a portion of the cache can be allocated for I/O traffic.
Set the "io_alloc_capable" property for the L3 cache resource on x86 (AMD)
systems that support SDCIAE.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://patch.msgid.link/df85a9a6081674fd3ef6b4170920485512ce2ded.1762995456.git.babu.moger@amd.com
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-common.c')
0 files changed, 0 insertions, 0 deletions