The following commit has been merged into the perf/core branch of tip:

Commit-ID: efe062705d149b20a15498cb999a9edbb8241e6f Gitweb: https://git.kernel.org/tip/efe062705d149b20a15498cb999a9edbb8241e6f Author: Alexander Antonov alexander.antonov@linux.intel.com AuthorDate: Thu, 17 Nov 2022 12:28:26 Committer: Peter Zijlstra peterz@infradead.org CommitterDate: Thu, 24 Nov 2022 11:09:21 +01:00

perf/x86/intel/uncore: Disable I/O stacks to PMU mapping on ICX-D

Current implementation of I/O stacks to PMU mapping doesn't support ICX-D. Detect ICX-D system to disable mapping.

Fixes: 10337e95e04c ("perf/x86/intel/uncore: Enable I/O stacks to IIO PMON mapping on ICX") Signed-off-by: Alexander Antonov alexander.antonov@linux.intel.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Reviewed-by: Kan Liang kan.liang@linux.intel.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20221117122833.3103580-5-alexander.antonov@linux.i... --- arch/x86/events/intel/uncore.h | 1 + arch/x86/events/intel/uncore_snbep.c | 5 +++++ 2 files changed, 6 insertions(+)

diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h index ef14149..fac3612 100644 --- a/arch/x86/events/intel/uncore.h +++ b/arch/x86/events/intel/uncore.h @@ -2,6 +2,7 @@ #include <linux/slab.h> #include <linux/pci.h> #include <asm/apicdef.h> +#include <asm/intel-family.h> #include <linux/io-64-nonatomic-lo-hi.h>

#include <linux/perf_event.h> diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 0d06b56..e14b963 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -5226,6 +5226,11 @@ static int icx_iio_get_topology(struct intel_uncore_type *type)

static int icx_iio_set_mapping(struct intel_uncore_type *type) { + /* Detect ICX-D system. This case is not supported */ + if (boot_cpu_data.x86_model == INTEL_FAM6_ICELAKE_D) { + pmu_clear_mapping_attr(type->attr_update, &icx_iio_mapping_group); + return -EPERM; + } return pmu_iio_set_mapping(type, &icx_iio_mapping_group); }