Re: [PATCH RFC] x86: check for and defend against BIOS memory corruption

[RafaÅ MiÅecki]

2008/8/29 RafaÅ MiÅecki <zajec5@xxxxxxxxx>:
> 2008/8/29 Hugh Dickins <hugh@xxxxxxxxxxx>:
>> Here's my version of Jeremy's patch, that I've now tested on my machines,
>> as x86_32 and as x86_64.  It addresses none of the points Alan Cox made,
>> and it stays silent for me, even after suspend+resume, unless I actually
>> introduce corruption myself.  Omits Jeremy's check in fault.c, but does
>> a check every minute, so should soon detect RafaÅ's HDMI corruption
>> without any need to suspend+resume.
>
> Your periodic test works fine:
>
> Corrupted low memory at ffff88000000be9c (be9c phys) = b02a0004
>  <IRQ>  [<ffffffff8020fc9b>] check_for_bios_corruption+0x93/0x9f
>  [<ffffffff8020fca7>] ? periodic_check_for_corruption+0x0/0x25
>  [<ffffffff8020fcb0>] periodic_check_for_corruption+0x9/0x25
>
> By the way I confirmed this bug on Sony Vaio FW11M (my one is FW11S).
> Probably more machines from FW11* are affected.

If this patch is known to work fine for Sony Vaio FW* and Alan's
machine, could it go mainline somehow?

-- 
RafaÅ MiÅecki
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