On Thu, Jul 25, 2024 at 04:49:08PM +0100, Dave Martin wrote: > 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? Now there's only one blank line, I think c1932cac7902a8b0f7355515917dedc5412eb15d unintentionally added 2 blank lines, before that it was always 1! > > > > > 4. Unused AT_HWCAP bits > > ----------------------- > > [...] > > Cheers > ---Dave
