From: kan.liang@linux.intel.com
To: tglx@linutronix.de, peterz@infradead.org, mingo@redhat.com,
linux-kernel@vger.kernel.org
Cc: ak@linux.intel.com, eranian@google.com, stable@vger.kernel.org,
Kan Liang <kan.liang@linux.intel.com>
Subject: [PATCH] perf/x86/intel/uncore: Fix PCI BDF address of M3UPI on SKX
Date: Fri, 21 Sep 2018 07:07:06 -0700 [thread overview]
Message-ID: <1537538826-55489-1-git-send-email-kan.liang@linux.intel.com> (raw)
From: Kan Liang <kan.liang@linux.intel.com>
The counters on M3UPI Link 0 and Link 3 don't count. Writing 0 to
these counters may causes system crash on some machines.
The PCI BDF addresses of M3UPI in current code are incorrect.
The correct addresses should be
D18:F1 0x204D
D18:F2 0x204E
D18:F5 0x204D
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
arch/x86/events/intel/uncore_snbep.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 51d7c11..3b3fc92 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3931,16 +3931,16 @@ static const struct pci_device_id skx_uncore_pci_ids[] = {
.driver_data = UNCORE_PCI_DEV_FULL_DATA(21, 5, SKX_PCI_UNCORE_M2PCIE, 3),
},
{ /* M3UPI0 Link 0 */
- PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x204C),
- .driver_data = UNCORE_PCI_DEV_FULL_DATA(18, 0, SKX_PCI_UNCORE_M3UPI, 0),
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x204D),
+ .driver_data = UNCORE_PCI_DEV_FULL_DATA(18, 1, SKX_PCI_UNCORE_M3UPI, 0),
},
{ /* M3UPI0 Link 1 */
- PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x204D),
- .driver_data = UNCORE_PCI_DEV_FULL_DATA(18, 1, SKX_PCI_UNCORE_M3UPI, 1),
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x204E),
+ .driver_data = UNCORE_PCI_DEV_FULL_DATA(18, 2, SKX_PCI_UNCORE_M3UPI, 1),
},
{ /* M3UPI1 Link 2 */
- PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x204C),
- .driver_data = UNCORE_PCI_DEV_FULL_DATA(18, 4, SKX_PCI_UNCORE_M3UPI, 2),
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x204D),
+ .driver_data = UNCORE_PCI_DEV_FULL_DATA(18, 5, SKX_PCI_UNCORE_M3UPI, 2),
},
{ /* end: all zeroes */ }
};
--
2.7.4
next reply other threads:[~2018-09-21 14:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 14:07 kan.liang [this message]
2018-09-21 14:14 ` [PATCH] perf/x86/intel/uncore: Fix PCI BDF address of M3UPI on SKX Peter Zijlstra
2018-09-21 14:37 ` Liang, Kan
2018-10-02 10:02 ` [tip:perf/core] " tip-bot for Kan Liang
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