linux-kernel - Re: [Xen-devel] kasan_map_early

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Date:	Tue, 3 Mar 2015 09:16:50 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Andrey Ryabinin <a.ryabinin@...sung.com>
Cc:	"Luis R. Rodriguez" <mcgrof@...e.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>,
	Chris Wright <chrisw@...s-sol.org>,
	xen-devel@...ts.xenproject.org,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	virtualization@...ts.linux-foundation.org,
	Alok Kataria <akataria@...are.com>
Subject: Re: [Xen-devel] kasan_map_early_shadow() on Xen

On Tue, Mar 03, 2015 at 04:15:06PM +0300, Andrey Ryabinin wrote:
> On 03/03/2015 12:40 PM, Luis R. Rodriguez wrote:
> > Andrey,
> > 
> > I believe that on Xen we should disable kasan, would like confirmation
> 
> I guess Xen guests won't work with kasan because Xen guests doesn't setup shadow
> (kasan_map_early_shadow() is not called in xen guests).
> 
> Disabling kasan for Xen in Kconfig is undesirable because that will disable kasan
> for allmodconfig and allyesconfig builds, but I don't see other option for now.

Was there an bug reported for this? It would be good to CC the maintainers
of Xen on that sort of thing.

Thanks!
.. snip..
> > [0] https://lkml.org/lkml/2015/2/23/328

If you look at the other x86 pulls - you will see that the authors
also missed enabling it on 32-bit kernels!

> > 
> >  Luis
> > 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@...ts.xen.org
> http://lists.xen.org/xen-devel
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