On Wed, Nov 18, 2015 at 05:08:58PM +0000, Suzuki K. Poulose wrote: > IDAA64DFR0_EL1: BRPs and WRPs are unsigned values. Use > the appropriate helpers to extract those fields. > > Cc: Ard Biesheuvel <[email protected]> > Reported-by: AKASHI Takahiro <[email protected]> > Signed-off-by: Suzuki K. Poulose <[email protected]> > --- > arch/arm64/include/asm/hw_breakpoint.h | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-)
Once you've got the dependencies sorted out: Acked-by: Will Deacon <[email protected]> Will > diff --git a/arch/arm64/include/asm/hw_breakpoint.h > b/arch/arm64/include/asm/hw_breakpoint.h > index e54415e..9732908 100644 > --- a/arch/arm64/include/asm/hw_breakpoint.h > +++ b/arch/arm64/include/asm/hw_breakpoint.h > @@ -138,16 +138,18 @@ extern struct pmu perf_ops_bp; > /* Determine number of BRP registers available. */ > static inline int get_num_brps(void) > { > + u64 dfr0 = read_system_reg(SYS_ID_AA64DFR0_EL1); > return 1 + > - > cpuid_feature_extract_field(read_system_reg(SYS_ID_AA64DFR0_EL1), > + cpuid_feature_extract_unsigned_field(dfr0, > ID_AA64DFR0_BRPS_SHIFT); > } > > /* Determine number of WRP registers available. */ > static inline int get_num_wrps(void) > { > + u64 dfr0 = read_system_reg(SYS_ID_AA64DFR0_EL1); > return 1 + > - > cpuid_feature_extract_field(read_system_reg(SYS_ID_AA64DFR0_EL1), > + cpuid_feature_extract_unsigned_field(dfr0, > ID_AA64DFR0_WRPS_SHIFT); > } > > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
