linux-kernel - Re: [PATCH -v3 1/6] x86, MCE: Add a HW injection flag

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Message-ID: <4DC8B117.9030302@jp.fujitsu.com>
Date:	Tue, 10 May 2011 12:29:27 +0900
From:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	Borislav Petkov <bp@...64.org>
CC:	EDAC devel <linux-edac@...r.kernel.org>, X86-ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH -v3 1/6] x86, MCE: Add a HW injection flag

(2011/05/10 3:35), Borislav Petkov wrote:
> From: Borislav Petkov <borislav.petkov@....com>
> 
> Add an mce->inject_flag to denote that we're doing HW injection.
> 
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>
> Acked-by: Ingo Molnar <mingo@...e.hu>
> ---
>  arch/x86/include/asm/mce.h |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
> index eb16e94..a2e3dcf 100644
> --- a/arch/x86/include/asm/mce.h
> +++ b/arch/x86/include/asm/mce.h
> @@ -49,6 +49,7 @@
>  #define MCJ_CTX_IRQ		2    /* inject context: IRQ */
>  #define MCJ_NMI_BROADCAST	4    /* do NMI broadcasting */
>  #define MCJ_EXCEPTION		8    /* raise as exception */
> +#define MCJ_HW_INJECT		16   /* do a HW MCE inject, i.e. INT18 */
>  
>  /* Fields are zero when not available */
>  struct mce {

IMHO, we should have better name for this feature; using wrmsr + int$18 is not
the only way to inject mce event to HW. I'd like to suggest MCJ_AMD_HW_INJECT,
MCJ_USE_WRMSR or so instead. Then we can have MCJ_USE_APEI_EINJ and so on, for
various way of MCE injection.


Thanks,
H.Seto




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