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From: Rusty Russell <rusty@rustcorp.com.au>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Chris Wright <chrisw@sous-sol.org>,
	Virtualization Mailing List <virtualization@lists.osdl.org>
Subject: Re: PARAVIRT_SAVE_FLAGS_IRQ_DISABLE composite callsite
Date: Mon, 26 Feb 2007 09:07:07 +1100	[thread overview]
Message-ID: <1172441227.13541.24.camel@localhost.localdomain> (raw)
In-Reply-To: <45E159A7.7060709@goop.org>

On Sun, 2007-02-25 at 01:40 -0800, Jeremy Fitzhardinge wrote:
> What was the point of this again?  Was it that these two operations are
> used so commonly together that its worth having a special type for them,
> or is there some correctness issue here?
> 
> It seems to me that having it adds a fair amount of fiddley complexity,
> and it doesn't gain very much because patching will make each operation
> individually fairly efficient.

Yes, the combo was *so* common we went for one patch site rather than
two.

Rusty.

  reply	other threads:[~2007-02-25 22:07 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-25  9:40 PARAVIRT_SAVE_FLAGS_IRQ_DISABLE composite callsite Jeremy Fitzhardinge
2007-02-25 22:07 ` Rusty Russell [this message]
2007-02-26  0:51   ` Jeremy Fitzhardinge
2007-02-26  2:43     ` Rusty Russell
2007-02-26  5:49       ` Jeremy Fitzhardinge
2007-02-26 23:28         ` Rusty Russell

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