linux-kernel - Re: [RFC/RFT PATCH 0/6] Switch GHES ioremap_page

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Date:   Mon, 06 Nov 2017 18:43:38 +0000
From:   James Morse <james.morse@....com>
To:     "Kani, Toshimitsu" <toshi.kani@....com>
CC:     "bp@...e.de" <bp@...e.de>,
        "gengdongjiu@...wei.com" <gengdongjiu@...wei.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "will.deacon@....com" <will.deacon@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "tbaicar@...eaurora.org" <tbaicar@...eaurora.org>,
        "lenb@...nel.org" <lenb@...nel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "xiexiuqi@...wei.com" <xiexiuqi@...wei.com>,
        "ying.huang@...el.com" <ying.huang@...el.com>
Subject: Re: [RFC/RFT PATCH 0/6] Switch GHES ioremap_page_range() to use fixmap

On 01/11/17 18:20, Kani, Toshimitsu wrote:
> On Wed, 2017-11-01 at 16:30 +0100, Borislav Petkov wrote:
>> On Wed, Nov 01, 2017 at 02:58:33PM +0000, James Morse wrote:
>>> Does anyone have an x86 machine that does firmware-first using NOTIFY_NMI?

>> AFAIK, the only one who has access to a reportedly somewhat working GHES
>> implementation is Toshi. CCed.
> 
> Thanks for the heads-up.  My x86 system only supports GHES with SCI
> error sources.  It uses MCE for synchronous error events.
> 
> So, for x86 SCI error sources:
> 
> Tested-by: Toshi Kani <toshi.kani@....com>

Thanks Toshi!


> nit: I think ghes_ioremap_pfn_[nmi|irq] should be renamed since they no
> longer use ioremap. 

I thought that would be too noisy...

I have some more rework to do in here before we can merge the other arm64 RAS
stuff, I can take that into account then.


Thanks,

James