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| author | Kan Liang <kan.liang@linux.intel.com> | 2023-01-12 23:01:04 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-01-21 02:06:13 +0300 |
| commit | 65248a9a9ee1ea2e6aad8f35253ffd9096ab81b7 (patch) | |
| tree | 7ea961c0465d7e5484f9d4855836acedbb221b68 /arch/x86/events/intel/uncore_discovery.c | |
| parent | bd9514a4d5ec25b29728720ca8b3a9ac4e3137d7 (diff) | |
| download | linux-65248a9a9ee1ea2e6aad8f35253ffd9096ab81b7.tar.xz | |
perf/x86/uncore: Add a quirk for UPI on SPR
The discovery table of UPI on some SPR variants, e.g., MCC, is broken.
The third UPI table may includes a wrong address which points to a
non-exists device. The bug impacts both UPI and M3UPI uncore PMON.
Use a pre-defined UPI and M3UPI table to replace the broken table.
Different BIOS may populate a device into a different domain or a
different BUS. The accurate location can only be retrieved at load time.
Add spr_update_device_location() to update the location of the UPI and
M3UPI in the pre-defined table.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Petlan <mpetlan@redhat.com>
Link: https://lore.kernel.org/r/20230112200105.733466-5-kan.liang@linux.intel.com
Diffstat (limited to 'arch/x86/events/intel/uncore_discovery.c')
0 files changed, 0 insertions, 0 deletions