linux-kernel - Re: [PATCH 2/3] x86: use vector_desc instead of vector

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Message-ID: <m1mxz6v4pm.fsf@fess.ebiederm.org>
Date:	Thu, 18 Feb 2010 09:22:45 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	linux-kernel@...r.kernel.org, Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [PATCH 2/3] x86: use vector_desc instead of vector_irq

Yinghai Lu <yinghai@...nel.org> writes:

> Eric pointed out that radix tree version of irq_to_desc will magnify delay on the path
> of handle_irq.
> use vector_desc to reduce the calling of irq_to_desc.
>
> next step: need to change all ack, mask, umask, eoi for all irq_chip to take irq_desc
>
> -v2: irq should be unsigned in 32bit handle_irq according to Eric
>      also reset vector_desc for lguest in setup_irq
> -v3: keep irq in x+execute_on_irq_stack() ...
>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>

I can't spot any more problems.


Acked-by: "Eric W. Biederman" <ebiederm@...ssion.com>

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