From: Keith Owens <kaos@ocs.com.au>
To: linux-ia64@vger.kernel.org
Subject: Re: why ms->pmsa_xip is used?
Date: Mon, 26 Oct 2009 23:36:53 +0000 [thread overview]
Message-ID: <12411.1256600213@ocs14w> (raw)
In-Reply-To: <F6CA51BB11EE80indou.takao@jp.fujitsu.com>
On Mon, 26 Oct 2009 18:15:22 -0400,
Takao Indoh <indou.takao@jp.fujitsu.com> wrote:
>As Intel manual says, it seems that pmsa_iip has a value of ip register
>where INIT interrupted when psr.ic is 0. Ok, I'll make a patch so that
>pmsa_iip is used irrespective of a value of psr.ic.
>
>Please let me know if I need to confirm something else before I make a
>patch.
That looks good. The only problem I can think of is an MCA/INIT
arriving while code like SAVE_MIN or SAVE_REST is executing. Back
tracing at that point using pmsa_iip is going to be a problem, you have
no idea what state the registers or stack are in.
next prev parent reply other threads:[~2009-10-26 23:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-20 19:25 why ms->pmsa_xip is used? Takao Indoh
2009-10-20 23:53 ` Keith Owens
2009-10-26 22:15 ` Takao Indoh
2009-10-26 23:36 ` Keith Owens [this message]
2009-10-27 22:21 ` Takao Indoh
2009-11-05 22:53 ` Takao Indoh
2009-11-05 23:10 ` Keith Owens
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