Kan Liang 6f7f984fa8 perf/x86/uncore: Correct the number of CHAs on EMR ... Starting from SPR, the basic uncore PMON information is retrieved from the discovery table (resides in an MMIO space populated by BIOS). It is called the discovery method. The existing value of the type->num_boxes is from the discovery table. On some SPR variants, there is a firmware bug that makes the value from the discovery table incorrect. We use the value from the SPR_MSR_UNC_CBO_CONFIG MSR to replace the one from the discovery table: 38776cc45e ("perf/x86/uncore: Correct the number of CHAs on SPR") Unfortunately, the SPR_MSR_UNC_CBO_CONFIG isn't available for the EMR XCC (Always returns 0), but the above firmware bug doesn't impact the EMR XCC. Don't let the value from the MSR replace the existing value from the discovery table. Fixes: 38776cc45e ("perf/x86/uncore: Correct the number of CHAs on SPR") Reported-by: Stephane Eranian <eranian@google.com> Reported-by: Yunying Sun <yunying.sun@intel.com> Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Yunying Sun <yunying.sun@intel.com> Link: https://lore.kernel.org/r/20230905134248.496114-1-kan.liang@linux.intel.com		2023-09-05 21:50:21 +02:00
..
amd	perf/x86/ibs: Set mem_lvl_num, mem_remote and mem_hops for data_src	2023-07-26 12:28:45 +02:00
intel	perf/x86/uncore: Correct the number of CHAs on EMR	2023-09-05 21:50:21 +02:00
zhaoxin	x86/perf/zhaoxin: Add stepping check for ZXC	2023-02-11 11:18:12 +01:00
core.c	perf/x86: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability	2023-07-26 12:28:46 +02:00
Kconfig	perf/x86/Kconfig: Fix indentation in the Kconfig file	2022-05-25 15:54:26 +02:00
Makefile	perf/x86: Move branch classifier	2022-08-27 00:05:44 +02:00
msr.c	x86/cpu: Fix Gracemont uarch	2023-08-09 21:51:06 +02:00
perf_event.h	perf/x86/intel: Add Crestmont PMU	2023-08-09 21:51:07 +02:00
perf_event_flags.h	x86/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH	2022-09-07 21:54:01 +02:00
probe.c
probe.h
rapl.c	x86/cpu: Fix Gracemont uarch	2023-08-09 21:51:06 +02:00
utils.c	perf/x86/utils: Fix uninitialized var in get_branch_type()	2022-09-29 12:20:56 +02:00