Re: [Crash-utility] Using crash to debug a domU on xen.

On Tue, Oct 22, 2013 at 07:03:19PM +0200, Daniel Kiper wrote: > Hi, > > Sorry for late reply but I am very busy now. > > On Thu, Oct 17, 2013 at 03:25:25PM -0400, Don Slutz wrote: >> On 10/16/13 09:49, Petr Tesarik wrote: >>> On Tue, 15 Oct 2013 12:02:51 -0400 >>> Don Slutz <dslutz(a)verizon.com&gt; wrote: >>> >>>> I have some code that allows this. See the following mail thread: >>>> >>>> http://permalink.gmane.org/gmane.comp.emulators.xen.devel/174807 >>>> >>>> The questions are: >>>> >>>> 1. Does remote access have a specification? >>>> 2. Is it supported? >>> I have never even made it to work. But since there's now some new use >>> for it, I wouldn't object reviving the code. >>> >> Good. >>>> 3. Should the code be part of xen or crash? >>> I think it should be part of xen, because it needs the xen development >>> files, which would be a new dependency for the crash utility. Also, the >>> development cycle is more aligned with xen than crash. >>> >>> Just my two cents, >>> Petr T >> That is why I started with it in xen. Not sure where it will end up. > I do not know protocol details but I think that it is worth checking > gdbsx tool from Xen (xen/tools/debugger/gdbsx) and gdb protocol spec > (you could expose GDB interface from QEMU so it could be useful in HVM > case). Maybe crash protocol is very similar or even identical with GDB > protocol because a large part of crash is GDB itself.

Ugh... I was in a hurry and forgot about final statement. Sorry for that.

So we could just use existing solutions if they are compatible with protocol used by crash. Daniel