linux-kernel - Re: [Xen-devel] [RFC v4 0/2] x86/xen: add xen hypercall preemption

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Date:	Fri, 23 Jan 2015 19:58:45 +0100
From:	"Luis R. Rodriguez" <mcgrof@...e.com>
To:	David Vrabel <david.vrabel@...rix.com>
Cc:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>,
	konrad.wilk@...cle.com, boris.ostrovsky@...cle.com,
	xen-devel@...ts.xenproject.org, kvm@...r.kernel.org,
	x86@...nel.org, linux-kernel@...r.kernel.org, rostedt@...dmis.org,
	paulmck@...ux.vnet.ibm.com
Subject: Re: [Xen-devel] [RFC v4 0/2] x86/xen: add xen hypercall preemption

On Fri, Jan 23, 2015 at 11:51:09AM +0000, David Vrabel wrote:
> On 23/01/15 00:29, Luis R. Rodriguez wrote:
> > From: "Luis R. Rodriguez" <mcgrof@...e.com>
> > 
> > This v4 addresses some of the cleanups recommended and adds
> > tracing option for when we do actually preempt a hypercall.
> > I kept the NOKPROBE_SYMBOL() for now but did remove the 'notrace'
> > stuff.
> > 
> > This goes out as RFC still as I have not been able to test 32-bit.
> > Can anyone test that or at least confirm that the 32-bit point
> > we do the upcall is definitely not on the IRQ stack?
> 
> You can omit fixing this for 32-bit guests (provided you note as such in
> the commit message).

I'll be happy to do that.

 Luis
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