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

commit efe0627 upstream. Current implementation of I/O stacks to PMU mapping doesn't support ICX-D. Detect ICX-D system to disable mapping. Fixes: 10337e9 ("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.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xanmod · Jan 12, 2023 · ca77ac2 · ca77ac2
1 parent df06e77
commit ca77ac2
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diff --git 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
@@ -5144,6 +5144,11 @@ 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);
 }