From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: torvalds@linux-foundation.org, hpa@zytor.com, mingo@elte.hu,
oleg@redhat.com, linux-kernel@vger.kernel.org,
suresh@aristanetworks.com, David Howells <dhowells@redhat.com>,
Koichi Yasutake <yasutake.koichi@jp.panasonic.com>,
Paul Mackerras <paulus@samba.org>,
Paul Mundt <lethal@linux-sh.org>, Chris Zankel <chris@zankel.net>
Subject: Re: [PATCH v2 1/4] fork: move the real prepare_to_copy() users to arch_dup_task_struct()
Date: Fri, 11 May 2012 10:17:44 +1000 [thread overview]
Message-ID: <1336695464.3881.71.camel@pasglop> (raw)
In-Reply-To: <1336692811-30576-1-git-send-email-suresh.b.siddha@intel.com>
On Thu, 2012-05-10 at 16:33 -0700, Suresh Siddha wrote:
> Historical prepare_to_copy() is mostly a no-op, duplicated for majority of
> the architectures and the rest following the x86 model of flushing the extended
> register state like fpu there.
>
> Remove it and use the arch_dup_task_struct() instead.
>
> Suggested-by: Oleg Nesterov <oleg@redhat.com>
> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
> Cc: David Howells <dhowells@redhat.com>
> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
For the powerpc part:
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cheers,
Ben.
next prev parent reply other threads:[~2012-05-11 0:18 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-07 19:07 [PATCH 1/2] coredump: flush the fpu exit state for proper multi-threaded core dump Suresh Siddha
2012-05-07 19:07 ` [PATCH 2/2] x86, xsave: remove thread_has_fpu() bug check in __sanitize_i387_state() Suresh Siddha
2012-05-07 19:15 ` [PATCH 1/2] coredump: flush the fpu exit state for proper multi-threaded core dump Linus Torvalds
2012-05-07 20:09 ` Suresh Siddha
2012-05-08 23:18 ` Suresh Siddha
2012-05-08 23:18 ` [PATCH 1/3] " Suresh Siddha
2012-05-09 21:05 ` Oleg Nesterov
2012-05-09 21:32 ` Suresh Siddha
2012-05-10 16:55 ` Oleg Nesterov
2012-05-10 17:04 ` Linus Torvalds
2012-05-10 23:33 ` [PATCH v2 1/4] fork: move the real prepare_to_copy() users to arch_dup_task_struct() Suresh Siddha
2012-05-10 23:33 ` [PATCH v2 2/4] coredump: ensure the fpu state is flushed for proper multi-threaded core dump Suresh Siddha
2012-05-11 16:51 ` Oleg Nesterov
2012-05-11 19:05 ` Suresh Siddha
2012-05-13 16:11 ` Oleg Nesterov
2012-05-15 18:03 ` Suresh Siddha
2012-05-15 18:55 ` Oleg Nesterov
2012-05-17 0:17 ` [tip:x86/fpu] " tip-bot for Suresh Siddha
2012-05-10 23:33 ` [PATCH v2 3/4] x86, xsave: remove thread_has_fpu() bug check in __sanitize_i387_state() Suresh Siddha
2012-05-17 0:18 ` [tip:x86/fpu] " tip-bot for Suresh Siddha
2012-05-10 23:33 ` [PATCH v2 4/4] x86, fpu: drop the fpu state during thread exit Suresh Siddha
2012-05-17 0:19 ` [tip:x86/fpu] " tip-bot for Suresh Siddha
2012-05-11 0:17 ` Benjamin Herrenschmidt [this message]
2012-05-17 0:16 ` [tip:x86/fpu] fork: move the real prepare_to_copy() users to arch_dup_task_struct() tip-bot for Suresh Siddha
2012-05-10 23:48 ` [PATCH 1/3] coredump: flush the fpu exit state for proper multi-threaded core dump Suresh Siddha
2012-05-08 23:18 ` [PATCH 2/3] x86, xsave: remove thread_has_fpu() bug check in __sanitize_i387_state() Suresh Siddha
2012-05-09 20:30 ` Oleg Nesterov
2012-05-09 21:18 ` Suresh Siddha
2012-05-10 16:36 ` Oleg Nesterov
2012-05-08 23:18 ` [PATCH 3/3] x86, fpu: clear the fpu state during thread exit Suresh Siddha
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