From: Mark Brown <broonie@kernel.org>
To: Ard Biesheuvel <ardb@google.com>
Cc: linux-arm-kernel@lists.infradead.org,
Ard Biesheuvel <ardb@kernel.org>, Marc Zyngier <maz@kernel.org>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Kees Cook <keescook@chromium.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Eric Biggers <ebiggers@google.com>
Subject: Re: [PATCH v2 3/4] arm64: fpsimd: Implement lazy restore for kernel mode FPSIMD
Date: Fri, 24 Nov 2023 12:31:07 +0000 [thread overview]
Message-ID: <ZWCXizWMLcNHXR/M@finisterre.sirena.org.uk> (raw)
In-Reply-To: <20231123174433.737171-9-ardb@google.com>
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On Thu, Nov 23, 2023 at 06:44:37PM +0100, Ard Biesheuvel wrote:
> From: Ard Biesheuvel <ardb@kernel.org>
>
> Now that kernel mode FPSIMD state is context switched along with other
> task state, we can enable the existing logic that keeps track of which
> task's FPSIMD state the CPU is holding in its registers. If it is the
> context of the task that we are switching to, we can elide the reload of
> the FPSIMD state from memory.
Thanks for doing this:
Reviewed-by: Mark Brown <broonie@kernel.org>
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next prev parent reply other threads:[~2023-11-24 12:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-23 17:44 [PATCH v2 0/4] arm64: Run kernel mode NEON with preemption enabled Ard Biesheuvel
2023-11-23 17:44 ` [PATCH v2 1/4] arm64: fpsimd: Drop unneeded 'busy' flag Ard Biesheuvel
2023-11-23 17:44 ` [PATCH v2 2/4] arm64: fpsimd: Preserve/restore kernel mode NEON at context switch Ard Biesheuvel
2023-11-24 0:14 ` Eric Biggers
2023-11-24 8:29 ` Ard Biesheuvel
2023-11-24 12:28 ` Mark Brown
2023-11-23 17:44 ` [PATCH v2 3/4] arm64: fpsimd: Implement lazy restore for kernel mode FPSIMD Ard Biesheuvel
2023-11-24 12:31 ` Mark Brown [this message]
2023-11-23 17:44 ` [PATCH v2 4/4] arm64: crypto: Remove conditional yield logic Ard Biesheuvel
2023-11-24 0:11 ` [PATCH v2 0/4] arm64: Run kernel mode NEON with preemption enabled Eric Biggers
2023-11-24 15:53 ` Ard Biesheuvel
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