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    Subject[ 23/40] ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit
    Date
    3.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Will Deacon <will.deacon@arm.com>

    commit f2fe09b055e2549de41fb107b34c60bac4a1b0cf upstream.

    Masked out PMXEVTYPER.NSH means that we can't enable profiling at PL2,
    regardless of the settings in the HDCR.

    This patch fixes the broken mask.

    Reported-by: Christoffer Dall <cdall@cs.columbia.edu>
    Signed-off-by: Will Deacon <will.deacon@arm.com>
    Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/arm/kernel/perf_event_v7.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/arm/kernel/perf_event_v7.c
    +++ b/arch/arm/kernel/perf_event_v7.c
    @@ -775,7 +775,7 @@ static const unsigned armv7_a7_perf_cach
    /*
    * PMXEVTYPER: Event selection reg
    */
    -#define ARMV7_EVTYPE_MASK 0xc00000ff /* Mask for writable bits */
    +#define ARMV7_EVTYPE_MASK 0xc80000ff /* Mask for writable bits */
    #define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */

    /*



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