linux-kernel - Re: [PATCH 6/8] arm64: Introduce raw_{d,i}cache_line

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Message-ID: <1468274154.2977.1.camel@infradead.org>
Date:	Mon, 11 Jul 2016 14:55:54 -0700
From:	Geoff Levand <geoff@...radead.org>
To:	Suzuki K Poulose <suzuki.poulose@....com>,
	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, catalin.marinas@....com,
	mark.rutland@....com, will.deacon@....com,
	James Morse <james.morse@....com>
Subject: Re: [PATCH 6/8] arm64: Introduce raw_{d,i}cache_line_size

On Fri, 2016-07-08 at 12:37 +0100, Suzuki K Poulose wrote:
> On systems with mismatched i/d cache min line sizes, we need to use
> the smallest size possible across all CPUs. This will be done by fetching
> the system wide safe value from CPU feature infrastructure.
> However the some special users(e.g kexec, hibernate) would need the line
> size on the CPU (rather than the system wide), when the system wide
> feature may not be accessible. Provide another helper which will fetch
> cache line size on the current CPU.
> 

Looks OK for what kexec needs.

Acked-by: Geoff Levand <geoff@...radead.org>