Messages in this thread | | | Date | Mon, 12 Dec 2005 12:51:57 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Memory corruption & SCSI in 2.6.15 |
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[ I applied Brian's patch, so hopefully it was the same issue, and current git doesn't show this problem any more ]
On Tue, 13 Dec 2005, Benjamin Herrenschmidt wrote: > > > Also, enabling DEBUG_PAGEALLOC might help, but that's not available on > > powerpc. > > Remind me what is needed to get that working ? Unmapping of linear > mapping pages ? (I suppose I could do that if I also disable using large > pages for it).
Yes, basically you'd have to allow the kernel mapping being unmapped one page at a time.
And yes, it's inefficient. Don't use it for performance measurements ;)
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