Re: [PATCH] Check CPL for break 0x80001 case. Re: [Xen-ia64-devel] [Q]ltrace and do_ssc

[Alex Williamson <alex.williamson@xxxxxx>]

On Wed, 2006-11-29 at 23:54 +0900, Isaku Yamahata wrote:
> This patch is incomplete.
> If the guest kernel issues break 0x80001 or 0x80002 with
> an unknown SSC command, xen shouldn't fall in infinit loop.
> It should panic domain (not xen) or return error.

Hi Isaku,

   I assume you objection to this patch is satisfied with the additional
do_ssc() patch you submitted, correct?  Thanks,

        Alex

> On Wed, Nov 29, 2006 at 08:07:36PM +0900, Atsushi SAKAI wrote:
> > Hi, All
> > 
> >  This is a patch which intends for fixing ltrace problem.
> > When I execute a command "ltrace ps" on dom0, it makes dom0 hung.
> > It comes from "break 0x80001" is shared by ltrace(CPL=3) and hpsim(CPL=2).
> > To avoid this problem, I just add check CPL in ia64_break_fault code.
> > 
> > References
> > Yamahata mail
> > http://lists.xensource.com/archives/html/xen-ia64-devel/2006-11/msg00319.html
> > Alex mail
> > http://lists.xensource.com/archives/html/xen-ia64-devel/2006-11/msg00318.html
> > 

-- 
Alex Williamson                             HP Open Source & Linux Org.


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