linux-kernel - Re: [PATCH v9 15/26] arm64: alternative: Apply alternatives early in boot process

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Message-ID: <864l9tvxnv.wl-marc.zyngier@arm.com>
Date:   Mon, 28 Jan 2019 11:17:40 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     Julien Thierry <julien.thierry@....com>
Cc:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <daniel.thompson@...aro.org>,
        <joel@...lfernandes.org>, <christoffer.dall@....com>,
        <james.morse@....com>, <catalin.marinas@....com>,
        <will.deacon@....com>, <mark.rutland@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: Re: [PATCH v9 15/26] arm64: alternative: Apply alternatives early in boot process

On Mon, 21 Jan 2019 15:33:34 +0000,
Julien Thierry <julien.thierry@....com> wrote:
> 
> From: Daniel Thompson <daniel.thompson@...aro.org>
> 
> Currently alternatives are applied very late in the boot process (and
> a long time after we enable scheduling). Some alternative sequences,
> such as those that alter the way CPU context is stored, must be applied
> much earlier in the boot sequence.
> 
> Introduce apply_boot_alternatives() to allow some alternatives to be
> applied immediately after we detect the CPU features of the boot CPU.
> 
> Signed-off-by: Daniel Thompson <daniel.thompson@...aro.org>
> [julien.thierry@....com: rename to fit new cpufeature framework better,
> 			 apply BOOT_SCOPE feature early in boot]
> Signed-off-by: Julien Thierry <julien.thierry@....com>
> Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Christoffer Dall <christoffer.dall@....com>
> Cc: Suzuki K Poulose <suzuki.poulose@....com>

Reviewed-by: Marc Zyngier <marc.zyngier@....com>

	M.

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