[PATCH v2 4/4] arm64: Add support of PAuth QARMA3 architected algorithm

[Catalin Marinas]

On Mon, Jan 31, 2022 at 05:06:54PM +0000, Vladimir Murzin wrote:
> QARMA3 is relaxed version of the QARMA5 algorithm which expected to
> reduce the latency of calculation while still delivering a suitable
> level of security.
> 
> Support for QARMA3 can be discovered via ID_AA64ISAR2_EL1
> 
>     APA3, bits [15:12] Indicates whether the QARMA3 algorithm is
>                        implemented in the PE for address
>                        authentication in AArch64 state.
> 
>     GPA3, bits [11:8] Indicates whether the QARMA3 algorithm is
>                        implemented in the PE for generic code
>                        authentication in AArch64 state.
> 
> Signed-off-by: Vladimir Murzin <vladimir.murzin at arm.com>
> ---
>  arch/arm64/include/asm/asm_pointer_auth.h      |  3 ++
>  arch/arm64/include/asm/cpufeature.h            |  1 +
>  arch/arm64/include/asm/kvm_hyp.h               |  1 +
>  arch/arm64/include/asm/sysreg.h                | 12 +++++++
>  arch/arm64/kernel/cpufeature.c                 | 45 +++++++++++++++++++++++---
>  arch/arm64/kernel/idreg-override.c             | 16 +++++++--
>  arch/arm64/kvm/arm.c                           |  1 +
>  arch/arm64/kvm/hyp/include/nvhe/fixed_config.h |  5 +++
>  arch/arm64/kvm/hyp/nvhe/sys_regs.c             | 14 ++++++++
>  arch/arm64/kvm/sys_regs.c                      |  5 +++
>  arch/arm64/tools/cpucaps                       |  2 ++
>  11 files changed, 99 insertions(+), 6 deletions(-)

For the non-KVM bits:

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>