• Peter Zijlstra's avatar
    perf/x86/msr: Fix SMI overflow · 3c3116b7
    Peter Zijlstra authored
    We compute 'delta' and properly sign extend it and then ignore it and
    recompute the raw value, loosing the sign extention.
    Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Vince Weaver <vincent.weaver@maine.edu>
    Cc: kan.liang@intel.com
    Cc: linux-kernel@vger.kernel.org
    Cc: luto@kernel.org
    Cc: ray.huang@amd.com
    Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
    3c3116b7
msr.c 5.41 KB