linux-kernel - Re: [PATCH 0/5] x86, NMI: give NMI handler a face-lift

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Message-ID: <20101019150104.GP5969@erda.amd.com>
Date:	Tue, 19 Oct 2010 17:01:04 +0200
From:	Robert Richter <robert.richter@....com>
To:	Don Zickus <dzickus@...hat.com>
CC:	"mingo@...e.hu" <mingo@...e.hu>,
	"andi@...stfloor.org" <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"peterz@...radead.org" <peterz@...radead.org>,
	"ying.huang@...el.com" <ying.huang@...el.com>
Subject: Re: [PATCH 0/5] x86, NMI: give NMI handler a face-lift

On 15.10.10 22:22:13, Don Zickus wrote:
> Restructuring the nmi handler to be more readable and simpler.
> 
> This is just laying the ground work for future improvements in this area.
> 
> I know people were complaining about having DIE_NMI and DIE_NMI_IPI, but
> for now it is consistent with what was there before.  Hopefully, we can
> modify the notifier chain to make it smarter and combine the two events.
> 
> I also left out one of Huang's patch until we figure out how we are going
> to proceed with a new notifier.
> 
> Tested 32-bit and 64-bit on AMD and Intel machines.
> 
> Cheers,
> Don
> 
> Huang Ying (5):
>   x86, NMI: Add NMI symbol constants and rename memory parity to PCI
>     SERR
>   x86, NMI: Add touch_nmi_watchdog to io_check_error delay
>   x86, NMI: Rewrite NMI handler
>   x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU
>   x86, NMI: Remove do_nmi_callback logic

I am fine with applying the patches, thanks Huang and Don.

I have some 2 comments on them and will reply directly.

-Robert

> 
>  arch/x86/include/asm/mach_traps.h |   12 +++-
>  arch/x86/include/asm/nmi.h        |   10 +++-
>  arch/x86/kernel/apic/hw_nmi.c     |    1 -
>  arch/x86/kernel/apic/nmi.c        |   29 +-------
>  arch/x86/kernel/cpu/perf_event.c  |    1 -
>  arch/x86/kernel/traps.c           |  141 ++++++++++++++++++++----------------
>  arch/x86/oprofile/nmi_int.c       |    1 -
>  arch/x86/oprofile/nmi_timer_int.c |    2 +-
>  drivers/char/ipmi/ipmi_watchdog.c |    2 +-
>  drivers/watchdog/hpwdt.c          |    2 +-
>  10 files changed, 102 insertions(+), 99 deletions(-)
> 
> -- 
> 1.7.2.3
> 
> 

-- 
Advanced Micro Devices, Inc.
Operating System Research Center

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