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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-12-02 11:55:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-12-02 11:55:58 -0800 |
| commit | 2ae20d651091c71ef182d28cbf10ce6f8be79c99 (patch) | |
| tree | 29099e23cd97968f4b3a2c144b4e5f20a93924dd /arch/x86/kernel/cpu/scattered.c | |
| parent | 2a47c26e55a2bc085a2349ed1d4e065ee298155f (diff) | |
| parent | ac7de456a37f9b126eb53b89c2bb27d625dc5fd9 (diff) | |
Merge tag 'x86_cache_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
- Add support for AMD's Smart Data Cache Injection feature which allows
for direct insertion of data from I/O devices into the L3 cache, thus
bypassing DRAM and saving its bandwidth; the resctrl side of the
feature allows the size of the L3 used for data injection to be
controlled
- Add Intel Clearwater Forest to the list of CPUs which support
Sub-NUMA clustering
- Other fixes and cleanups
* tag 'x86_cache_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
fs/resctrl: Update bit_usage to reflect io_alloc
fs/resctrl: Introduce interface to modify io_alloc capacity bitmasks
fs/resctrl: Modify struct rdt_parse_data to pass mode and CLOSID
fs/resctrl: Introduce interface to display io_alloc CBMs
fs/resctrl: Add user interface to enable/disable io_alloc feature
fs/resctrl: Introduce interface to display "io_alloc" support
x86,fs/resctrl: Implement "io_alloc" enable/disable handlers
x86,fs/resctrl: Detect io_alloc feature
x86/resctrl: Add SDCIAE feature in the command line options
x86/cpufeatures: Add support for L3 Smart Data Cache Injection Allocation Enforcement
fs/resctrl: Consider sparse masks when initializing new group's allocation
x86/resctrl: Support Sub-NUMA Cluster (SNC) mode on Clearwater Forest
Diffstat (limited to 'arch/x86/kernel/cpu/scattered.c')
| -rw-r--r-- | arch/x86/kernel/cpu/scattered.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c index caa4dc885c21..d113863a8eab 100644 --- a/arch/x86/kernel/cpu/scattered.c +++ b/arch/x86/kernel/cpu/scattered.c @@ -53,6 +53,7 @@ static const struct cpuid_bit cpuid_bits[] = { { X86_FEATURE_SMBA, CPUID_EBX, 2, 0x80000020, 0 }, { X86_FEATURE_BMEC, CPUID_EBX, 3, 0x80000020, 0 }, { X86_FEATURE_ABMC, CPUID_EBX, 5, 0x80000020, 0 }, + { X86_FEATURE_SDCIAE, CPUID_EBX, 6, 0x80000020, 0 }, { X86_FEATURE_TSA_SQ_NO, CPUID_ECX, 1, 0x80000021, 0 }, { X86_FEATURE_TSA_L1_NO, CPUID_ECX, 2, 0x80000021, 0 }, { X86_FEATURE_AMD_WORKLOAD_CLASS, CPUID_EAX, 22, 0x80000021, 0 }, |