From: ebiederm@xmission.com (Eric W. Biederman)
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Yinghai Lu <yinghai@kernel.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Suresh Siddha <suresh.b.siddha@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up
Date: Sat, 13 Feb 2010 14:26:04 -0800 [thread overview]
Message-ID: <m1hbpkojr7.fsf@fess.ebiederm.org> (raw)
In-Reply-To: <83b97429-92d3-498f-b1a8-a6969713f7ba@email.android.com> (Jeremy Fitzhardinge's message of "Sat\, 13 Feb 2010 14\:12\:57 -0800")
Jeremy Fitzhardinge <jeremy@goop.org> writes:
> I don't have the code in front of me, but I think that change should be OK. Xen just wants to initiate interrupt delivery for a given irq. At least for x86; I won't make any claims for ia64.
Thanks.
For ia64 the change should be a noop, generic_handle_irq_desc calls
__do_IRQ when needed.
On x86 the big differences are:
- No more stack overflow check.
- Not switching to the irq stack for i386.
Eric
next prev parent reply other threads:[~2010-02-13 22:26 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-13 2:49 [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up Yinghai Lu
2010-02-13 2:49 ` [PATCH 1/8] irq: remove not need bootmem code Yinghai Lu
2010-02-13 2:49 ` [PATCH 2/8] radix: move radix init early Yinghai Lu
2010-02-13 2:49 ` [PATCH 3/8] sparseirq: change irq_desc_ptrs to static Yinghai Lu
2010-02-13 2:49 ` [PATCH 4/8] sparseirq: use radix_tree instead of ptrs array Yinghai Lu
2010-02-13 2:49 ` [PATCH 5/8] x86: remove arch_probe_nr_irqs Yinghai Lu
2010-02-13 2:49 ` [PATCH 6/8] use nr_cpus= to set nr_cpu_ids early Yinghai Lu
2010-02-13 2:49 ` [PATCH 7/8] x86: use num_processors for possible cpus Yinghai Lu
2010-02-13 2:49 ` [PATCH 8/8] x86: make 32bit apic flat to physflat switch like 64bit Yinghai Lu
2010-02-13 3:44 ` [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up Eric W. Biederman
2010-02-13 3:49 ` H. Peter Anvin
2010-02-13 4:17 ` Eric W. Biederman
2010-02-13 22:12 ` Jeremy Fitzhardinge
2010-02-13 22:26 ` Eric W. Biederman [this message]
2010-02-13 9:54 ` Yinghai Lu
2010-02-13 11:39 ` Eric W. Biederman
2010-02-13 12:04 ` Eric W. Biederman
2010-02-13 22:40 ` Yinghai Lu
2010-02-13 23:14 ` Eric W. Biederman
2010-02-13 23:59 ` Yinghai Lu
2010-02-14 0:30 ` Eric W. Biederman
2010-02-14 0:49 ` Yinghai Lu
2010-02-18 2:49 ` [PATCH 1/3] xen: Remove unnecessary arch specific xen irq functions Yinghai Lu
2010-02-19 1:36 ` [tip:x86/irq] " tip-bot for Eric W. Biederman
[not found] ` <4B7CA9A1.3020806@kernel.org>
2010-02-18 2:49 ` [PATCH 0/3] radix tree spareirq addon cleanup Yinghai Lu
2010-02-18 2:50 ` [PATCH 2/3] x86: use vector_desc instead of vector_irq Yinghai Lu
2010-02-18 17:22 ` Eric W. Biederman
2010-02-23 6:39 ` [PATCH -v3 1/2] " Yinghai Lu
2010-02-23 6:44 ` [PATCH -v2 2/2] genericirq: change ack/mask in irq_chip to take irq_desc instead of irq Yinghai Lu
2010-02-24 21:36 ` Eric W. Biederman
2010-02-24 22:07 ` Yinghai Lu
2010-02-25 0:22 ` Stephen Rothwell
2010-03-02 14:58 ` Thomas Gleixner
2010-03-03 8:49 ` Yinghai Lu
2010-03-03 10:26 ` Thomas Gleixner
[not found] ` <4B84F013.9040708@kernel.org>
2010-02-24 9:26 ` [PATCH -v3 " Yinghai Lu
2010-02-24 9:27 ` [PATCH -v4 1/2] x86: use vector_desc instead of vector_irq Yinghai Lu
2010-02-18 2:50 ` [RFC PATCH 3/3] genericirq: change ack/mask in irq_chip to take irq_desc in addition to irq Yinghai Lu
2010-02-18 17:04 ` Eric W. Biederman
2010-02-18 17:13 ` H. Peter Anvin
2010-02-18 19:51 ` Yinghai Lu
2010-02-13 12:26 ` [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up Eric W. Biederman
2010-02-13 22:36 ` Yinghai Lu
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