linux-kernel - Re: [PATCH 1/4] x86, CPU: Fixup tlb_flushall

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Message-ID: <501F2DE9.3090900@intel.com>
Date:	Mon, 06 Aug 2012 10:37:29 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Borislav Petkov <bp@...64.org>
CC:	"H. Peter Anvin" <hpa@...or.com>, X86-ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH 1/4] x86, CPU: Fixup tlb_flushall_shift formatting

On 08/04/2012 12:37 AM, Borislav Petkov wrote:

> From: Borislav Petkov <borislav.petkov@....com>
> 
> The TLB characteristics appeared like this in dmesg:
> 
> [    0.065817] Last level iTLB entries: 4KB 512, 2MB 1024, 4MB 512
> [    0.065817] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 512
> [    0.065817] tlb_flushall_shift is 0xffffffff
> 
> where tlb_flushall_shift is actually -1 but dumped as a hex number.
> However, the Kconfig option CONFIG_DEBUG_TLBFLUSH and the rest of the
> code treats this as a signed decimal and states "If you set it to -1,
> the code flushes the whole TLB unconditionally."
> 
> So, fix its formatting in accordance with the other references to it.
> 
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>


Acked-by Alex Shi <alex.shi@...el.com>
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