From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v5 2/2] ARM: VFP: preserve the HW context when calling signal handlers
Date: Mon, 12 Apr 2010 19:41:36 +0100 [thread overview]
Message-ID: <20100412184136.GD3048@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <e15d90a0042327dd34a065f9cd463a02b25e6522.1270199787.git.imre.deak@nokia.com>
On Fri, Apr 02, 2010 at 05:36:03PM +0300, imre.deak at nokia.com wrote:
> From: Imre Deak <imre.deak@nokia.com>
>
> Signal handlers can use floating point, so prevent them to corrupt
> the main thread's VFP context. So far there were two signal stack
> frame formats defined based on the VFP implementation, but the user
> struct used for ptrace covers all posibilities, so use it for the
> signal stack too.
>
> Introduce also a new user struct for VFP exception registers. In
> this too fields not relevant to the current VFP architecture are
> ignored.
>
> Support to save / restore the exception registers was added by
> Will Deacon.
Look fine to me, but I'd like an ack from Daniel since he partly looks
after the toolchain side of things and has dealt with this area before.
next prev parent reply other threads:[~2010-04-12 18:41 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1242744292-23776-1-git-send-email-imre.deak@nokia.com>
2010-02-04 21:37 ` [RFC PATCH v2 0/2] ARM: VFP: Save / restore VFP state on the signal handler path Imre Deak
2010-02-04 21:38 ` [RFC PATCH v2 1/2] ARM: VFP: add support to sync the VFP state of the current thread Imre Deak
2010-02-06 10:32 ` Russell King - ARM Linux
2010-02-06 11:20 ` Russell King - ARM Linux
2010-02-06 11:32 ` Russell King - ARM Linux
2010-02-06 11:41 ` Russell King - ARM Linux
2010-02-06 15:55 ` Imre Deak
2010-02-04 21:38 ` [RFC PATCH v2 2/2] ARM: VFP: preserve the HW context when calling signal handlers Imre Deak
2010-02-06 9:25 ` Russell King - ARM Linux
2010-02-06 10:02 ` Imre Deak
2010-02-06 12:12 ` Russell King - ARM Linux
2010-02-06 16:23 ` Imre Deak
2010-03-29 16:17 ` [RFC PATCH v3 0/3] ARM: VFP: Save / restore VFP state on the signal handler path imre.deak at nokia.com
2010-03-31 21:23 ` [RFC PATCH v4 " imre.deak at nokia.com
2010-04-02 14:36 ` [RFC PATCH v5 0/2] " imre.deak at nokia.com
2010-04-02 14:36 ` [RFC PATCH v5 1/2] ARM: VFP: fix the SMP versions of vfp_{sync, flush}_hwstate imre.deak at nokia.com
2010-04-12 18:39 ` [RFC PATCH v5 1/2] ARM: VFP: fix the SMP versions of vfp_{sync,flush}_hwstate Russell King - ARM Linux
2010-04-02 14:36 ` [RFC PATCH v5 2/2] ARM: VFP: preserve the HW context when calling signal handlers imre.deak at nokia.com
2010-04-12 18:41 ` Russell King - ARM Linux [this message]
2010-04-12 22:04 ` [RFC PATCH v5 0/2] ARM: VFP: Save / restore VFP state on the signal handler path Jamie Lokier
2010-04-13 11:42 ` Imre Deak
2010-04-13 11:59 ` Nicolas Pitre
2010-04-07 16:24 ` [RFC PATCH v4 0/3] " Dirk Behme
2010-04-07 16:39 ` Imre Deak
2010-04-07 17:31 ` Jason McMullan
2010-03-31 21:23 ` [RFC PATCH v4 1/3] ARM: VFP: fix the SMP versions of vfp_{sync, flush}_hwstate imre.deak at nokia.com
2010-03-31 21:23 ` [RFC PATCH v4 2/3] ARM: VFP: make user_vfp struct packed imre.deak at nokia.com
2010-03-31 21:23 ` [RFC PATCH v4 3/3] ARM: VFP: preserve the HW context when calling signal handlers imre.deak at nokia.com
2010-03-29 16:17 ` [RFC PATCH v3 1/3] ARM: VFP: add support to sync the VFP state of the current thread imre.deak at nokia.com
2010-03-29 16:17 ` [RFC PATCH v3 2/3] ARM: VFP: make user_vfp struct packed imre.deak at nokia.com
2010-03-29 16:17 ` [RFC PATCH v3 3/3] ARM: VFP: preserve the HW context when calling signal handlers imre.deak at nokia.com
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