linux-kernel - Re: [RFC PATCH] x86-64: software IRQ masking and handling

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Message-ID: <4C3AC826.4010506@kernel.org>
Date:	Mon, 12 Jul 2010 09:45:42 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	the arch/x86 maintainers <x86@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [RFC PATCH] x86-64: software IRQ masking and handling

Hello, Rusty.

On 07/12/2010 04:19 AM, Rusty Russell wrote:
> Also, is it worth trying to implement this soft disable generically?
> I know at least ppc64 does it today...
> 
> (Y'know, because your initial patch wasn't ambitious enough...)

We can evolve things such that common parts are factored into generic
code but most of important part being heavily dependent on the
specific architecture, I don't think there will be too much (calling
irqhandler on a separate stack if necessary, generic IRQ masking flag
mgmt maybe merged into preemption flag and so on).

Thanks.

-- 
tejun
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