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.
next prev parent 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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