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linux/arch/x86
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Babu Moger 4fe61bff5a x86/resctrl: Add interface to write mbm_local_bytes_config 
The event configuration for mbm_local_bytes can be changed by the
user by writing to the configuration file
/sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config.

The event configuration settings are domain specific and will affect all
the CPUs in the domain.

Following are the types of events supported:

  ====  ===========================================================
  Bits   Description
  ====  ===========================================================
  6      Dirty Victims from the QOS domain to all types of memory
  5      Reads to slow memory in the non-local NUMA domain
  4      Reads to slow memory in the local NUMA domain
  3      Non-temporal writes to non-local NUMA domain
  2      Non-temporal writes to local NUMA domain
  1      Reads to memory in the non-local NUMA domain
  0      Reads to memory in the local NUMA domain
  ====  ===========================================================

For example, to change the mbm_local_bytes_config to count all the non-temporal
writes on domain 0, the bits 2 and 3 needs to be set which is 1100b (in hex
0xc).
Run the command:

  $echo  0=0xc > /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config

To change the mbm_local_bytes to count only reads to local NUMA domain 1,
the bit 0 needs to be set which 1b (in hex 0x1). Run the command:

  $echo  1=0x1 > /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config

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://lore.kernel.org/r/20230113152039.770054-13-babu.moger@amd.com
2023-01-23 17:40:32 +01:00
..
boot x86/boot: Avoid using Intel mnemonics in AT&T syntax asm 2023-01-10 13:03:23 +01:00
coco x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type 2023-01-03 18:46:06 +01:00
configs
crypto - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
entry - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
events perf/x86/intel/uncore: Add Emerald Rapids 2023-01-09 12:00:58 +01:00
hyperv
ia32
include x86/resctrl: Add interface to read mbm_total_bytes_config 2023-01-23 17:40:24 +01:00
kernel x86/resctrl: Add interface to write mbm_local_bytes_config 2023-01-23 17:40:32 +01:00
kvm KVM: x86/xen: Avoid deadlock by adding kvm->arch.xen.xen_lock leaf node lock 2023-01-11 17:45:58 -05:00
lib x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type 2023-01-03 18:46:06 +01:00
math-emu
mm x86/mm: fix poking_init() for Xen PV guests 2023-01-12 11:22:20 +01:00
net - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
pci x86/pci: Treat EfiMemoryMappedIO as reservation of ECAM space 2023-01-13 11:53:54 -06:00
platform pci-v6.2-changes 2022-12-14 09:54:10 -08:00
power - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
purgatory
ras
realmode
tools
um elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size} 2023-01-05 15:12:12 +00:00
video
virt/vmx/tdx
xen xen: branch for v6.2-rc4 2023-01-12 17:02:20 -06:00
.gitignore
Kbuild
Kconfig powerpc updates for 6.2 2022-12-19 07:13:33 -06:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug
Makefile Kbuild updates for v6.2 2022-12-19 12:33:32 -06:00
Makefile.um
Makefile_32.cpu