From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mukesh Rathor <mukesh.rathor@oracle.com>
Subject: Re: PVH update....
Date: Tue, 8 Jan 2013 18:50:30 -0800
Message-ID: <20130108185030.4d244afe@mantra.us.oracle.com>
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To: Mukesh Rathor <mukesh.rathor@oracle.com>
Cc: "Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>, Ian Campbell <Ian.Campbell@citrix.com>, "stefano.stabellini@eu.citrix.com" <stefano.stabellini@eu.citrix.com>
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On Tue, 8 Jan 2013 18:37:56 -0800
Mukesh Rathor <mukesh.rathor@oracle.com> wrote:

> Hi Guys,
> 
> Well, I've all my xen patches ready, but in final testing, the dom0
> doesn't boot in PVH mode. Without debugger, it's hard to debug. So I
> added kdb to it, and it boots fine. So back to debugging without kdb.
> Unfortunately, it's hanging badly during boot that printk's won't work
> either. I am able to boot in PV mode and boot PV/PVH/HVM guests. so
> hopefully, it's just one issue.


Ah, debug is on by default. Works with debug=n. I've never tested with
debug=y. It gives me double fault right at the beginning:

(XEN) *** DOUBLE FAULT ***
(XEN) ----[ Xen-4.3-unstable  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    0
(XEN) RIP:    e008:[<ffff82c4802a6700>] construct_dom0+0x1d/0x2d9e
(XEN) RFLAGS: 0000000000010292
(XEN) rax: 0000000000000001   rbx: ffff83013ffc4000   rcx:
ffff83000008cf10 (XEN) rdx: 0000000000dfb000   rsi: ffff83000008cf00
rdi: ffff83013ffc4000 (XEN) rbp: ffff82c4802c7e48   rsp:
ffff82c4802c5998   r8:  ffff82c48029997d (XEN) r9:  ffff82c4802b4660
r10: 0000000000000020   r11: ffff82c4802d3e40 (XEN) r12:
ffff83000008cf00   r13: ffff83013fff2370   r14: 0000000000dfb000 (XEN)
r15: ffff82c480265780    cs: 000000000000e008    ss: 0000000000000000
(XEN) Valid stack range: ffff82c4802c6000-ffff82c4802c8000,
sp=ffff82c4802c5998, tss.esp0=ffff82c4802c7fc0


Starting to look at what debug=y does.

Thanks
Mukesh