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[Xen-devel] Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable
- To: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
- From: Chris Wright <chrisw@xxxxxxxxxxxx>
- Date: Mon, 19 Mar 2007 11:41:37 -0700
- Cc: zach@xxxxxxxxxx, jeremy@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, anthony@xxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, chrisw@xxxxxxxxxxxx, Andi Kleen <ak@xxxxxx>, mingo@xxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, torvalds@xxxxxxxxxxxxxxxxxxxx, David Miller <davem@xxxxxxxxxxxxx>
- Delivery-date: Mon, 19 Mar 2007 11:40:23 -0700
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
* Eric W. Biederman (ebiederm@xxxxxxxxxxxx) wrote:
> Is it truly critical to inline any of these instructions?
I don't have any current measurements. But we'd been aiming
at getting irq_{en,dis}able to a simple memory write to pda.
But simplicity, maintenance, etc. win over trimming a couple
cycles, so still worth real look.
thanks,
-chris
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