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[Xen-devel] Re: mini-os: gnttab.c does not compile

To: Robert Kaiser (FH) <kaiser@xxxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Re: mini-os: gnttab.c does not compile
From: Grzegorz Milos <gm281@xxxxxxxxx>
Date: Wed, 30 Aug 2006 07:06:39 +0100
Cc: "John D. Ramsdell" <ramsdell@xxxxxxxxx>, Steven Smith <sos22@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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Hi there
Thanks for the reports guys.

I'm very busy for the next 2 days, but I will have a look afterwards. My guess is that public xen interfaces changed, which causes our grant table implementation to fail to compile.

If you remove gnttab.c (together with the init call from kernel.c) then Mini-OS should work just fine.



sorry to bother you with this: while trying to compile mini-os from
xen-unstable.hg, I noticed that compilation failed like this:

gcc -fno-builtin -Wall -Werror -Wredundant-decls -Wno-format
-Wstrict-prototypes -Wnested-externs -Wpointer-arith -Winline -m32
-march=i686 -g -Iinclude -Iinclude/x86 -Iinclude/x86/x86_32 - c gnttab.c
-o gnttab.o
gnttab.c: In Funktion »init_gnttab«:
gnttab.c:165: error: request for member `p' in something not a structure or
make: *** [gnttab.o] Error 1

Looking at the source code, I'm not surprised that this happens, and I suspect
that the file of the same name (gnttab.c) found in
linux-2.6-xen-sparse/drivers/xen/core will also fail to compile (though I
have not checked this).

It seems that the grant-table functions are currently in a non- functional state and that mini-os does not use these functions anyway (except for a call to the init function): After commenting out this call, I was able to build
the mini-os binary.

Is there a particular reason for this? Can I expect the mini-os to work after
removing gnttab.c?

Kind Regards


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