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From: Catalin Marinas <catalin.marinas@arm.com>
To: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, maz@kernel.org,
	mark.rutland@arm.com, will@kernel.org
Subject: Re: [PATCH v2 4/4] arm64: Add support of PAuth QARMA3 architected algorithm
Date: Fri, 4 Feb 2022 18:42:48 +0000	[thread overview]
Message-ID: <Yf1zqBrv69NnyEWX@arm.com> (raw)
In-Reply-To: <20220131170654.62381-5-vladimir.murzin@arm.com>

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@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@arm.com>

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  reply	other threads:[~2022-02-04 18:44 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-31 17:06 [PATCH v2 0/4] arm64: Support of PAuth QARMA3 architected algorithm Vladimir Murzin
2022-01-31 17:06 ` [PATCH v2 1/4] arm64: cpufeature: Account min_field_value when cheking secondaries for PAuth Vladimir Murzin
2022-02-04 18:13   ` Catalin Marinas
2022-01-31 17:06 ` [PATCH v2 2/4] arm64: cpufeature: Warn if mutually exclusive PAuth algorithms detected Vladimir Murzin
2022-02-04 18:16   ` Catalin Marinas
2022-01-31 17:06 ` [PATCH v2 3/4] arm64: cpufeature: Mark existing PAuth architected algorithm as QARMA5 Vladimir Murzin
2022-02-04 18:18   ` Catalin Marinas
2022-01-31 17:06 ` [PATCH v2 4/4] arm64: Add support of PAuth QARMA3 architected algorithm Vladimir Murzin
2022-02-04 18:42   ` Catalin Marinas [this message]
2022-02-15 18:21   ` Will Deacon
2022-02-21 14:47     ` Vladimir Murzin
2022-02-22 21:50       ` Will Deacon
2022-02-23 11:20         ` Vladimir Murzin
2022-02-24  9:49           ` Will Deacon
2022-01-31 17:38 ` [PATCH v2 0/4] arm64: Support " Vladimir Murzin
2022-02-05 10:27 ` Marc Zyngier

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