linux-kernel - Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 23 Feb 2016 13:11:42 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>
Cc:	tony.luck@...el.com, hpa@...or.com, mingo@...hat.com,
	tglx@...utronix.de, dougthompson@...ssion.com,
	mchehab@....samsung.com, x86@...nel.org,
	linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
	ashok.raj@...el.com, gong.chen@...ux.intel.com,
	len.brown@...el.com, peterz@...radead.org, ak@...ux.intel.com,
	alexander.shishkin@...ux.intel.com
Subject: Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error

On Tue, Feb 16, 2016 at 03:45:10PM -0600, Aravind Gopalakrishnan wrote:
> The Deferred field indicates if we have a Deferred error.
> Deferred errors indicate errors that hardware could not
> fix. But it still does not cause any interruption to program
> flow. So it does not generate any #MC and UC bit in MCx_STATUS
> is not set.
> 
> Fixing comment here. No functional change
> 
> Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>
> ---
>  arch/x86/include/asm/mce.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
> index 2ec67ac..476da8b 100644
> --- a/arch/x86/include/asm/mce.h
> +++ b/arch/x86/include/asm/mce.h
> @@ -40,7 +40,7 @@
>  #define MCI_STATUS_AR	 (1ULL<<55)  /* Action required */
>  
>  /* AMD-specific bits */
> -#define MCI_STATUS_DEFERRED	(1ULL<<44)  /* declare an uncorrected error */
> +#define MCI_STATUS_DEFERRED	(1ULL<<44)  /* declare a deferred error */

/* uncorrected error, deferred exception */

sounds better to me.

>  #define MCI_STATUS_POISON	(1ULL<<43)  /* access poisonous data */
>  #define MCI_STATUS_TCC		(1ULL<<55)  /* Task context corrupt */
>  /*
> --

For the future, such cleanups/fixes should always go first in the patch
set.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.