[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] Re: [PATCH] xen: Disable stack protector for irq helper



On Mon, Oct 05, 2009 at 10:21:01AM -0700, Jeremy Fitzhardinge wrote:
> > Save all caller-saved registers on x86_32 for the paravirt callee saved
> > registers.
> That looks better, but it is still overkill.  We only need to save the
> set of registers the ABI requires the callee to preserve.  What
> additional register(s) gets clobbered by stack-protector that need to be
> saved?

Well, exactly the two, ecx and edx. eax is still clobbered by the return
value. Anyway, it works in praxis.

Bastian

-- 
Superior ability breeds superior ambition.
                -- Spock, "Space Seed", stardate 3141.9

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.