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| author | Babu Moger <babu.moger@amd.com> | 2025-11-12 18:57:30 -0600 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-11-21 22:35:22 +0100 |
| commit | 556d2892aa715286d840a74216c8fff885559261 (patch) | |
| tree | 50ef2833ec17f8e5255d2c1576817a5aa8c82bff /drivers/pci/controller/dwc/pcie-qcom-common.c | |
| parent | 7923ae7698cf9728501974d76d8ea712686281bc (diff) | |
x86,fs/resctrl: Implement "io_alloc" enable/disable handlers
"io_alloc" is the generic name of the new resctrl feature that enables system
software to configure the portion of cache allocated for I/O traffic. On AMD
systems, "io_alloc" resctrl feature is backed by AMD's L3 Smart Data Cache
Injection Allocation Enforcement (SDCIAE).
Introduce the architecture-specific functions that resctrl fs should call to
enable, disable, or check status of the "io_alloc" feature. Change SDCIAE state
by setting (to enable) or clearing (to disable) bit 1 of
MSR_IA32_L3_QOS_EXT_CFG on all logical processors within the cache domain.
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/9e9070100c320eab5368e088a3642443dee95ed7.1762995456.git.babu.moger@amd.com
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-common.c')
0 files changed, 0 insertions, 0 deletions