On Fri, May 03, 2024 at 02:01:28PM +0100, Joey Gouly wrote: > Expose a HWCAP and ID_AA64MMFR3_EL1_S1POE to userspace, so they can be used to > check if the CPU supports the feature. > > Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx> > Cc: Catalin Marinas <catalin.marinas@xxxxxxx> > Cc: Will Deacon <will@xxxxxxxxxx> > --- > > This takes the last bit of HWCAP2, is this fine? What can we do about more features in the future? > > > Documentation/arch/arm64/elf_hwcaps.rst | 2 ++ > arch/arm64/include/asm/hwcap.h | 1 + > arch/arm64/include/uapi/asm/hwcap.h | 1 + > arch/arm64/kernel/cpufeature.c | 14 ++++++++++++++ > arch/arm64/kernel/cpuinfo.c | 1 + > 5 files changed, 19 insertions(+) > > diff --git a/Documentation/arch/arm64/elf_hwcaps.rst b/Documentation/arch/arm64/elf_hwcaps.rst > index 448c1664879b..694f67fa07d1 100644 > --- a/Documentation/arch/arm64/elf_hwcaps.rst > +++ b/Documentation/arch/arm64/elf_hwcaps.rst > @@ -365,6 +365,8 @@ HWCAP2_SME_SF8DP2 > HWCAP2_SME_SF8DP4 > Functionality implied by ID_AA64SMFR0_EL1.SF8DP4 == 0b1. > > +HWCAP2_POE > + Functionality implied by ID_AA64MMFR3_EL1.S1POE == 0b0001. Nit: unintentionally dropped blank line before the section heading? > > 4. Unused AT_HWCAP bits > ----------------------- [...] Cheers ---Dave
