From: Alexander Antonov <alexander.antonov@linux.intel.com>
Date: Thu, 17 Nov 2022 12:28:26 +0000 (+0000)
Subject: perf/x86/intel/uncore: Disable I/O stacks to PMU mapping on ICX-D
X-Git-Tag: v6.2-rc1~176^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=efe062705d149b20a15498cb999a9edbb8241e6f;p=thirdparty%2Fkernel%2Flinux.git

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.intel.com
---

diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
index ef14149576238..fac3612289f1a 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 0d06b56b8a33a..e14b963983777 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);
 }