linux-kernel - Re: [PATCH 2/5] arm64: cpufeature: Track unsigned fields

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Message-ID: <564D9F15.3020508@arm.com>
Date:	Thu, 19 Nov 2015 10:06:13 +0000
From:	"Suzuki K. Poulose" <Suzuki.Poulose@....com>
To:	AKASHI Takahiro <takahiro.akashi@...aro.org>,
	linux-arm-kernel@...ts.infradead.org
Cc:	catalin.marinas@....com, will.deacon@....com, mark.rutland@....com,
	ard.biesheuvel@...aro.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] arm64: cpufeature: Track unsigned fields

On 19/11/15 10:03, Suzuki K. Poulose wrote:
> On 19/11/15 04:57, AKASHI Takahiro wrote:
>> Hi
>>
>>  From my curiosity,
>> can you please clarify your criteria regarding which fields of a register should be signed or unsigned?
>> I guessed that the fields marked with FTR_LOWER_SAFE or FTR_HIGHER_SAFE could be unsigned,

Also, the unsigned values are not restricted to LOWER_SAFE/HIGHER_SAFE, but also applies for
FTR_EXACT, so that we use the appropriate methods to extract them.


Suzuki

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