Messages in this thread | | | Date | Fri, 22 Feb 2008 13:13:52 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: [Xen-devel] [PATCH] let XEN depend on PAE |
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Arnd Hannemann wrote: > Jeremy Fitzhardinge wrote: > >> Arnd Hannemann wrote: >> >>> This is with 2.6.24.2, but latest-git looks the same: >>> I also tried with 2.6.23 which crashes instantly, without any output >>> of the guest. >>> >>> >> I'm not too surprised. Non-PAE Xen is a bit of a rarity, and it only >> gets tested rarely. Chris Wright did spend some time on it a while ago, >> but I don't know that its had any real attention since. I've been >> making sure non-PAE compiles, but I've been lax about testing it. >> This is the first usermode exec, I guess? The backtrace is a bit odd; >> I've never seen a problem in move_page_tables before. >> > > Yes its trying to execute the first script in initramfs, I also tried with initramdisk > and got a similar error. (move_page_tables also involved) > > >> Does "xm dmesg" tell you what Xen is complaining about? You may need to >> compile with debug=y in Config.mk. >> > > (XEN) mm.c:645:d44 Non-privileged (44) attempt to map I/O space 00000000 > > I will recompile with debug=y and post the output. > If I reduce the dom0 memory with dom0_mem=200000 I see something like > 00000080 with dom0_mem=800000 I always see 00000000. >
That's helpful. Looks like the mfn is getting mushed to 0.
J
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