perf/x86/intel/pt: Fix address filter config for 32-bit kernel
authorAdrian Hunter <adrian.hunter@intel.com>
Mon, 31 Jan 2022 07:24:52 +0000 (09:24 +0200)
committerPeter Zijlstra <peterz@infradead.org>
Wed, 2 Feb 2022 12:11:43 +0000 (13:11 +0100)
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@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220131072453.2839535-5-adrian.hunter@intel.com
arch/x86/events/intel/pt.c

index 93676a5b66dba0ac9fe7460d3428ebf4d531cbdf..f061dc2bd5f091beea2e5de0b54b4a6bdc9529f8 100644 (file)
@@ -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;