linux-kernel - [tip: perf/core] perf/x86/intel/pt: Fix address filter config for 32-bit kernel

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Date:   Thu, 03 Feb 2022 14:33:28 -0000
From:   "tip-bot2 for Adrian Hunter" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/x86/intel/pt: Fix address filter config for
 32-bit kernel

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

Commit-ID:     e5524bf1047eb3b3f3f33b5f59897ba67b3ade87
Gitweb:        https://git.kernel.org/tip/e5524bf1047eb3b3f3f33b5f59897ba67b3ade87
Author:        Adrian Hunter <adrian.hunter@...el.com>
AuthorDate:    Mon, 31 Jan 2022 09:24:52 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 02 Feb 2022 13:11:43 +01:00

perf/x86/intel/pt: Fix address filter config for 32-bit kernel

Change from shifting 'unsigned long' to 'u64' to prevent the config bits
being lost on a 32-bit kernel.

Fixes: eadf48cab4b6b0 ("perf/x86/intel/pt: Add support for address range filtering in PT")
Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20220131072453.2839535-5-adrian.hunter@intel.com
---
 arch/x86/events/intel/pt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 93676a5..f061dc2 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -474,7 +474,7 @@ static u64 pt_config_filters(struct perf_event *event)
 			pt->filters.filter[range].msr_b = filter->msr_b;
 		}
 
-		rtit_ctl |= filter->config << pt_address_ranges[range].reg_off;
+		rtit_ctl |= (u64)filter->config << pt_address_ranges[range].reg_off;
 	}
 
 	return rtit_ctl;