From: Rusty Russell <rusty@rustcorp.com.au>
To: Zachary Amsden <zach@vmware.com>
Cc: Chris Wright <chrisw@sous-sol.org>,
Virtualization Mailing List <virtualization@lists.osdl.org>
Subject: Re: RFC: const_udelay in 018-delay functions patch
Date: Thu, 26 Oct 2006 09:01:02 +1000 [thread overview]
Message-ID: <1161817262.27354.3.camel@localhost.localdomain> (raw)
In-Reply-To: <453F027E.2020704@vmware.com>
On Tue, 2006-10-24 at 23:21 -0700, Zachary Amsden wrote:
> Rusty Russell wrote:
> > On Tue, 2006-10-24 at 22:11 -0700, Zachary Amsden wrote:
> >> +#if defined(CONFIG_PARAVIRT) && !defined(USE_REAL_IO)
> >> +#include <asm/paravirt.h>
> >> +#else
> >>
> >
> > USE_REAL_IO? Is this defined anywhere? Or just future-proofing?
> >
>
> It has to be used for SMP bootstrapping - IPI acceptance requires real
> time cross-processor delay, even in a VM
No, that's USE_REAL_TIME_DELAY: USE_REAL_IO is not currently defined
anywhere AFAICT.
> - and also can be added by a
> top-level define to kernel compiles for driver domains for Xen to give
> real time device delays.
Makes sense...
Rusty.
--
Help! Save Australia from the worst of the DMCA: http://linux.org.au/law
prev parent reply other threads:[~2006-10-25 23:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-25 5:11 RFC: const_udelay in 018-delay functions patch Zachary Amsden
2006-10-25 6:03 ` Rusty Russell
2006-10-25 6:21 ` Zachary Amsden
2006-10-25 23:01 ` Rusty Russell [this message]
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