Date: Tue, 25 Nov 2008 16:57:53 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Zach Brown <zach.brown@oracle.com>
Cc: Jens Axboe <jens.axboe@oracle.com>, Avi Kivity <avi@redhat.com>,
       suparna@in.ibm.com, linux-aio@kvack.org, Jeff Moyer <jmoyer@redhat.com>,
       Anthony Liguori <aliguori@us.ibm.com>, linux-kernel@vger.kernel.org,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Thomas Gleixner <tglx@linutronix.de>
Subject: Re: kvm aio wishlist
Message-ID: <20081125155753.GA22504@elte.hu>
References: <492B0CDD.7080000@redhat.com> <492B2348.9090008@oracle.com> <492B2976.3010209@redhat.com> <492B3912.3030707@oracle.com> <492BC5CB.6000609@redhat.com> <20081125101923.GA28123@in.ibm.com> <492BD807.4000002@redhat.com> <20081125145949.GD14147@elte.hu> <20081125151058.GX26308@kernel.dk> <492C1904.9020309@oracle.com>
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* Zach Brown <zach.brown@oracle.com> wrote:

> > Still unsure why that stuff never got anywhere.
> 
> Changing the tid of submitting tasks makes it unsuitable for 
> sys_io_*() or posix aio users as it stands.  Maybe we could swap 
> tids on the switch, but we'd probably then have to audit the life 
> time of tid -> task_struct users in the kernel.

doesnt look like a big thing affecting the fastpath materially.

> And there's still the question of what ptrace is supposed to do.

debug-only, we sure can work something out.

	Ingo
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