linux-kernel - Re: [PATCH 3/3] x86, cacheinfo: Calculate L3 indexes

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Message-ID: <4B578E93.9040709@zytor.com>
Date:	Wed, 20 Jan 2010 15:15:31 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...64.org>
CC:	mingo@...e.hu, tglx@...utronix.de, andreas.herrmann3@....com,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] x86, cacheinfo: Calculate L3 indexes

On 01/19/2010 03:07 AM, Borislav Petkov wrote:
> We need to know the valid L3 indexes interval when disabling them over
> /sysfs. Do that when the core is brought online and add boundary checks
> to the sysfs .store attribute.
> 
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>
> @@ -161,6 +162,7 @@ struct _cpuid4_info_regs {
>  	union _cpuid4_leaf_ecx ecx;
>  	unsigned long size;
>  	unsigned long can_disable;
> +	unsigned int l3_indexes;
>  };
>  

Hmmm... 32, 64, 64, 32 bits... we could move up the l3_indexes variable
here.   However, more likely is that "size" and "can_disable" have no
business being unsigned long in the first place -- especially the latter
seems to be actually used as a boolean, and really should be "bool".

Second, the preferred plural of "index" is "indices" (although both are
correct and present in the kernel source.)

	-hpa
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