Messages in this thread | | | Date | Tue, 15 Dec 2009 03:25:41 -0800 | From | Yinghai Lu <> | Subject | Re: bisected crash due to "x86: Move swiotlb initialization before dma32_free_bootmem" |
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FUJITA Tomonori wrote: > On Tue, 15 Dec 2009 11:56:50 +0100 > Ingo Molnar <mingo@elte.hu> wrote: > >> * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote: >> >>> There are a few people who hit this. How many people use a box with over >>> 256GB memory? >>> >>> And you can work around this with "dma32_size" kernel boot option. >> Well, since the kernel has not crashed before this change there's really just >> two options as per upstream kernel regression policy: either we fix it or we >> revert it. > > As I wrote, here is a patch that can be applied to cleanly to the git > head: > > http://www.kernel.org/pub/linux/kernel/people/tomo/misc/0001-x86-two-stage-swiotlb-initialization.patch > > It fixes the problem. Yinghai, can you test it? It should work but > it's good to confirm it.
i tested already, it works.
> > I simply wanted to say that it's not a bug that breaks lots of boxes > or leads to something serious like data corruption (no need to say > something like "revert it now!"). It's also worth investigating why it > breaks, I think.
will look at it later
YH
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