Messages in this thread | | | Date | Wed, 28 Jul 2010 12:58:44 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 31/31] memblock: Add memblock_find_in_range() |
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On 07/28/2010 12:27 PM, Yinghai Lu wrote: >> >> Yinghai, do you have any more detail, or know who would? Also copying >> the Qlogic Infinipath maintainer email... > > when I was debug memblock with x86, found the strange crash when high/low. > then use kexec with "memtest" in command line, and the early memtest does find > some bad memory. > > then I add more print about EPT physical address for first kernel, > it does show that range is used by qla driver in first kernel. > I built all needed drivers in kernel so can pxeboot the kernel on all test platforms easily. >
[Cc: Andrew Vasquez, who seems to have written the offending code, checkin df613b96077cee826b14089ae6e75eeabf71faa3.]
The question is still open why this particular DMA activity was not shut down before the kexec. I'm not familiar with how non-crashdump kexec idles the hardware, but it obviously better do so.
-hpa
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