Messages in this thread | | | Date | Sun, 07 Apr 2013 09:34:07 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] do not try to sync identity map for non-mapped pages |
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On 04/07/2013 06:33 AM, Borislav Petkov wrote: > > looks like we haven't whacked all the moles - I keep seeing this when > testing 32-bit builds in qemu on latest Linus + tip. I'd guess this is > still that /dev/mem accessing thing called wdm. > > I'm still wondering though whether we should BUG_ON on a /dev/mem > access? >
We shouldn't, no. /dev/mem really needs to be fixed along a bunch of axes. Yes, it is privileged and extra creepy, but it should either work or it should fail cleanly.
-hpa
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