[PATCH 0/8] ARM: Expose Armv8 AArch32 features via hwcap

Russell King (Oracle) linux at armlinux.org.uk
Mon Nov 21 11:04:41 PST 2022


On Wed, Oct 26, 2022 at 11:19:53AM +0530, Amit Daniel Kachhap wrote:
> Hi All,
> 
> This series advertise availability of Armv8 features present in AArch32
> state. These features are mostly Advanced SIMD(fphp, asimdhp, dp,
> fhm, bf16, i8mm) and few others(sb ssbs). These features are already exposed
> to user in arm64 kernel. A similar series advertising the features in
> arm64 kernel in compat mode will be sent separately.
> 
> Some other remaining features(SPECRES,  ETS, nTLBPA, CSV3, LSMAOC) are not
> advertised in arm64 kernel so left here also.
> 
> The entire series is divided feature wise as present in Armv8 manual.
> The details of these features can be found in Armv8 architecture
> reference manual available from
> https://developer.arm.com/documentation/ddi0487/gb/?lang=en
> 
> All the changes have been tested on Arm FVP Base Revc model after adding
> necessary model parameters.
> 
> The series is based on Linux 6.1-rc1.

Hi Amit,

Please could you list which CPUs support running aarch32 _and_ support
these features?

Thanks!

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!



More information about the linux-arm-kernel mailing list