From: Peter Zijlstra <peterz@infradead.org>
To: Nick Piggin <npiggin@suse.de>
Cc: Masami Hiramatsu <mhiramat@redhat.com>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
akpm <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Jim Keniston <jkenisto@us.ibm.com>
Subject: Re: irq-disabled vs vmap vs text_poke
Date: Tue, 17 Feb 2009 09:31:56 +0100 [thread overview]
Message-ID: <1234859516.4744.12.camel@laptop> (raw)
In-Reply-To: <20090217030353.GA31504@wotan.suse.de>
On Tue, 2009-02-17 at 04:03 +0100, Nick Piggin wrote:
> It is not a bad idea, but I don't think it quite goes far enough.
> IMO we should reserve 2 pages of virtual memory for each CPU, and
> then do the mapping/unmapping without locking, and with another
> variant of unmap_kernel_range that does not do the global TLB
> flush.
A bit like kmap_atomic() except for 2 pages and !highmem. Should work.
next prev parent reply other threads:[~2009-02-17 8:32 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-13 12:50 irq-disabled vs vmap vs text_poke Peter Zijlstra
2009-02-13 12:55 ` Nick Piggin
2009-02-13 13:02 ` Peter Zijlstra
2009-02-13 13:04 ` Ingo Molnar
2009-02-13 14:25 ` Mathieu Desnoyers
2009-02-13 14:33 ` Peter Zijlstra
2009-02-13 14:43 ` Mathieu Desnoyers
2009-02-13 18:05 ` Ingo Molnar
2009-02-13 13:05 ` Peter Zijlstra
2009-02-13 13:09 ` Nick Piggin
2009-02-13 14:18 ` Mathieu Desnoyers
2009-02-13 14:28 ` Peter Zijlstra
2009-02-13 16:32 ` Masami Hiramatsu
2009-02-13 16:38 ` Peter Zijlstra
2009-02-13 16:55 ` Mathieu Desnoyers
2009-02-13 18:14 ` Masami Hiramatsu
2009-02-13 18:57 ` Mathieu Desnoyers
2009-02-13 21:41 ` Masami Hiramatsu
2009-02-16 15:04 ` Masami Hiramatsu
2009-02-16 15:31 ` Nick Piggin
2009-02-16 17:24 ` Mathieu Desnoyers
2009-02-17 2:00 ` Masami Hiramatsu
2009-02-17 3:03 ` Nick Piggin
2009-02-17 8:31 ` Peter Zijlstra [this message]
2009-02-17 17:13 ` Masami Hiramatsu
2009-02-17 16:48 ` Masami Hiramatsu
2009-02-17 17:02 ` Steven Rostedt
2009-02-17 17:18 ` Mathieu Desnoyers
2009-02-17 17:24 ` Steven Rostedt
2009-02-17 17:28 ` Mathieu Desnoyers
2009-02-17 17:48 ` Steven Rostedt
2009-02-13 14:27 ` [PATCH] x86: text_poke might sleep Mathieu Desnoyers
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