From: Dave Jones <davej@redhat.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
stsp@aknet.ru, linux-kernel@vger.kernel.org, VANDROVE@vc.cvut.cz
Subject: Re: crash in entry.S restore_all, 2.6.12-rc2, x86, PAGEALLOC
Date: Thu, 7 Apr 2005 12:47:34 -0400 [thread overview]
Message-ID: <20050407164734.GB19016@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0504070737190.28951@ppc970.osdl.org>
On Thu, Apr 07, 2005 at 07:47:41AM -0700, Linus Torvalds wrote:
> So the sysenter sequence might as well look like
>
> pushl $(__USER_DS)
> pushl %ebp
> sti
> pushfl
> ..
>
> which actually does three protected pushes thanks to the one-instruction
> "interrupt shadow" after an sti.
Is this guaranteed on every x86 variant (or rather, every one
that has SEP). ?
Dave
next prev parent reply other threads:[~2005-04-07 16:47 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-05 6:55 crash in entry.S restore_all, 2.6.12-rc2, x86, PAGEALLOC Ingo Molnar
2005-04-05 7:03 ` Andrew Morton
2005-04-05 7:07 ` Ingo Molnar
2005-04-05 7:16 ` Ingo Molnar
2005-04-05 7:29 ` Ingo Molnar
2005-04-05 7:40 ` Ingo Molnar
2005-04-05 9:51 ` Mikael Pettersson
2005-04-05 18:09 ` Ingo Molnar
2005-04-05 7:05 ` Ingo Molnar
2005-04-05 19:11 ` Stas Sergeev
2005-04-05 19:19 ` Linus Torvalds
2005-04-05 19:41 ` Stas Sergeev
2005-04-05 19:53 ` Linus Torvalds
2005-04-05 20:44 ` Ingo Molnar
2005-04-05 21:04 ` Linus Torvalds
2005-04-06 15:44 ` Stas Sergeev
2005-04-07 8:00 ` Ingo Molnar
2005-04-07 11:10 ` Andrew Morton
2005-04-07 14:47 ` Linus Torvalds
2005-04-07 14:51 ` Ingo Molnar
2005-04-07 16:47 ` Dave Jones [this message]
2005-04-07 17:17 ` Richard B. Johnson
2005-04-07 17:23 ` Linus Torvalds
2005-04-07 16:11 ` Stas Sergeev
2005-04-07 16:35 ` Linus Torvalds
2005-04-07 16:46 ` Stas Sergeev
2005-04-07 16:55 ` Linus Torvalds
2005-04-07 18:10 ` Stas Sergeev
2005-04-10 13:20 ` Stas Sergeev
2005-04-10 22:32 ` Andrew Morton
2005-04-11 17:15 ` Stas Sergeev
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