Re: [Xen-devel] [PATCH 1/3] Add support for OpenBSD

[Anil Madhavapeddy <anil@xxxxxxxxxxxxx>]

On 18 Oct 2006, at 17:27, Keir Fraser wrote:

> On 18/10/06 17:17, "Anil Madhavapeddy" <anil@xxxxxxxxxxxxx> wrote:
>
> > > I applied your second patch, but not the third (SSP/ProPolice) one
> > > as I
> > > don't understand why it's needed. If there's some extra magic in
> > > OpenBSD's
> > > gcc, I hope there is a flag we can specify to turn it off for the
> > > hypervisor
> > > itself.
> > It's enabled by default in OpenBSD's modified gcc-3.3.5, turn it off
> > with CFLAGS+= -fno-stack-protector
> We have that already in arch/x86/Rules.mk. If that was working, I  
> doubt
> Christoph would have gone to the trouble of hacking up the SSP goop.
That flag definitely works.

I think Christoph wanted to get stack protection working, as all the  
other OpenBSD bits (kernel/userland) use it.  There isn't much to it  
beyond adding the stack smash handler, and the stack frame format  
changes a bit...
-anil


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