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Re: [Xen-devel] [PATCH] let XEN depend on PAE

Arnd Hannemann wrote:
Jeremy Fitzhardinge wrote:
Arnd Hannemann wrote:
This is with, 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 
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.


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