Hollis Blanchard wrote:
On Tue, 2007-06-19 at 13:49 +0200, Christian Ehrhardt wrote:
The DomU now boots without visible issues, but at least on my system
networking in DomU does not yet work - the DomU tihnk its working, but
I can't get a connection from/to Dom0.
@Hollis - currently you are the only one except me who has an
up-to-date forward port patch queue - could you please verify if this
is only an issue of my local setup by applying all my latest patches
and see what works in your environment.


Networking seems to be OK here. I'm using a very stripped down disk
image for domU (actually I'm using
http://xm-test.xensource.com/ramdisks/initrd-1.1-powerpc.img), so I
haven't tested it heavily, but I can manually assign an unused IP
address and ping both into and out of the domU. My domain profile
contains "vif = [ '' ]", and so xend automatically creates a vif and
bridges it to the physical network.

I'm attaching the full MQ patch series to this mail. To use it, clone
http://xenbits.xensource.com/linux-2.6.18-xen.hg , extract the tarball
inside that directory (it creates .hg/patches), and hg qpush -a. If
you're not already an MQ user, see
http://www.selenic.com/mercurial/wiki/index.cgi/MqExtension or just
patch by hand.

I haven't figured out how to effectively share this queue, but since I
think it's pretty much done at this point, we'll be able to commit and
send upstream soon (but I will be traveling until July, so not too
soon).

I was currently applying the latest patch queue to a current xen-unstable+make prep-kernels (which hg clones http://xenbits.xensource.com/linux-2.6.18-xen.hg). I saw that the patch autotranslate-mmap.diff does not apply. The patch removes a not needed autotranslate check. But in the code coming currently from http://xenbits.xensource.com/linux-2.6.18-xen.hg is a "idndef __powerpw__" around there which a) would do the job and b) lets the patch not match. Your patchnote says that this does not apply to other architectures and I support every approach to reduce ifdefs ;-) Because of that I updated the autotranslate-mmap.diff and attached it here for you inclusion in our patchqueue for 2.6.18. Additionally this mentioning to that sub-patch gives everyone the chance to comment the "does not affect other architectures" statement - therefor I add xen-devel here too.

--

Grüsse / regards, Christian Ehrhardt

IBM Linux Technology Center, Open Virtualization
+49 7031/16-3385
[EMAIL PROTECTED]
[EMAIL PROTECTED]

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[XEN][LINUX] Remove autotranslate check from privcmd_mmap().
PowerPC dom0 is autotranslated and needs to be able to map domU memory.
x86 doesn't use privileged autotranslated domains, and IA64 has their own
privcmd_mmap(), so this doesn't affect them.
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>

diff -r 50220a1b2aaf drivers/xen/privcmd/privcmd.c
--- a/drivers/xen/privcmd/privcmd.c	Thu Jun 21 07:49:49 2007 +0200
+++ b/drivers/xen/privcmd/privcmd.c	Thu Jun 21 07:52:35 2007 +0200
@@ -229,12 +229,6 @@ static struct vm_operations_struct privc
 
 static int privcmd_mmap(struct file * file, struct vm_area_struct * vma)
 {
-#ifndef __powerpc__ /* PowerPC has a trick to safely do this. */
-	/* Unsupported for auto-translate guests. */
-	if (xen_feature(XENFEAT_auto_translated_physmap))
-		return -ENOSYS;
-#endif
-
 	/* DONTCOPY is essential for Xen as copy_page_range is broken. */
 	vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY;
 	vma->vm_ops = &privcmd_vm_ops;
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