Re: [Xen-devel] PVH Dom0 with latest Linux kernels

[Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>]

On Fri, 28 Feb 2014 17:15:08 -0800
Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> wrote:

> On Tue, 18 Feb 2014 17:47:04 -0800
> Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> wrote:
> 
> > On Tue, 18 Feb 2014 17:48:02 +0100
> > Roger Pau Monnà <roger.pau@xxxxxxxxxx> wrote:
> > 
> > > Hello,
> > > 
> > > I've tried to boot a PVH Dom0 using Linux 3.14.0-rc3 and Mukesh's
> > > PVH Dom0 Xen tree
> > > (https://oss.oracle.com/git/?p=mrathor/xen.git;a=shortlog;
> > > h=dom0pvh-v7), and got the following crash. Do you have any new
> > > Xen Dom0 series that I could use to test PVH Dom0?
> > > 
> > 
> > It won't work. The final linux patches were changed a bit, and it
> > makes an hcall that will cause mem corruption in xen. So, just hang
> > in there a bit, new patches coming up in few days.
> > 
> > thanks
> > Mukesh
> 
> Hey Roger,
> 
> Sorry, still don't have the new version out. Just running into one
> issue after another... I had to refresh the tree, that broke my tools
> as they needed newer glibc, which caused me to reinstall, which caused
> dom0 to break causing me to rebuild that entire thing... anyways, I
> ve got stuff up, but guests are not starting right now. Debugging.
> Will keep you posted.

JFYI... I am able to boot dom0 in PVH mode, then start PV and PVH guest.
But for HVM guest, during boot I see PF fautls in different places during 
load of acpi-cpufreq module. Very hard to debug since faults come from
different place everytime. I'm now trying to figure what load_module
does thruout.

[    3.804141] BUG: unable to handle kernel paging request at 00000014bf0d13c8
[    3.805127] IP: [<ffffffff8104c87c>] apply_relocate_add+0x7c/0x150
[    3.805127] PGD 0

------
[    3.779263] BUG: unable to handle kernel NULL pointer dereference at         
  (null)
[    3.780250] IP: [<ffffffff810eadf3>] add_unformed_module+0x23/0x150
[    3.780250] PGD 0
[    3.780250] Oops: 0002 [#1] SMP
--------
[    3.975346] BUG: unable to handle kernel paging request at 0000000000003100
[    3.976333] IP: [<ffffffff8130276d>] memcpy+0xd/0x110
[    3.976333] PGD 0
[    3.976333]  [<ffffffff810ede36>] ? layout_and_allocate+0x756/0xc00
[    3.976333]  [<ffffffff810ee3f1>] load_module+0x111/0x18b0


Strange, not sure why the problem is on PVH dom0 only... anyways,
debugging. The problem is intermittent and sometimes it boots just
fine...

thanks
Mukesh


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel