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Re: [PATCH] ARM: keystone: add a work around to handle asynchronous external abort

From Russell King - ARM Linux <linux@arm.linux.org.uk>
Newsgroups linux.kernel
Subject Re: [PATCH] ARM: keystone: add a work around to handle asynchronous external abort
Date 2015-08-18 00:50 +0200
Message-ID <pYBo5-4bu-7@gated-at.bofh.it> (permalink)
References (2 earlier) <pXnQd-4h6-17@gated-at.bofh.it> <pXoVX-5O1-1@gated-at.bofh.it> <pXvb4-6cV-13@gated-at.bofh.it> <pXvb4-6cV-11@gated-at.bofh.it> <pYAV3-3DY-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Mon, Aug 17, 2015 at 06:12:52PM -0400, Murali Karicheri wrote:
> Unfortunately, this patch causes boot to stop very early just after
> local_abt_enable() is called in early_trap_init(). Before and After applying
> the patch, here is what the boot log looks like. Do you see any issue with
> the patch diff shown below? Patch is applied on top of v4.2-rc7. I have some
> additional base port patches applied to boot kernel on my EVM based on a new
> SoC.

Try moving the call to local_abt_enable() below forward to the end of
devicemaps_init().  I suspect this is too early for the abort handlers
to reliably run.

> diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
> index d358226..381c4e4 100644
> --- a/arch/arm/kernel/traps.c
> +++ b/arch/arm/kernel/traps.c
> @@ -871,6 +871,11 @@ void __init early_trap_init(void *vectors_base)
> 
>         flush_icache_range(vectors, vectors + PAGE_SIZE * 2);
>         modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
> +
> +       /* Enable imprecise aborts */
> +       local_abt_enable();
> +

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[PATCH] ARM: keystone: add a work around to handle asynchronous external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-11 21:20 +0200
  Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-14 16:10 +0200
    Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Lucas Stach <l.stach@pengutronix.de> - 2015-08-14 16:30 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-15 00:00 +0200
        Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-15 00:00 +0200
          Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-17 16:20 +0200
    Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort santosh shilimkar <santosh.shilimkar@oracle.com> - 2015-08-14 17:20 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-15 00:00 +0200
        Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-18 00:20 +0200
          Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-18 00:50 +0200
          Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort "santosh.shilimkar@oracle.com" <santosh.shilimkar@oracle.com> - 2015-08-18 05:20 +0200
            Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-18 10:20 +0200
              Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Lucas Stach <l.stach@pengutronix.de> - 2015-08-18 10:30 +0200
                Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Afzal Mohammed <afzal.mohd.ma@gmail.com> - 2015-08-18 14:10 +0200
              Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Jisheng Zhang <jszhang@marvell.com> - 2015-08-18 10:40 +0200
                Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-18 17:00 +0200
              Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-18 22:30 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-15 00:00 +0200
        Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort "santosh.shilimkar@oracle.com" <santosh.shilimkar@oracle.com> - 2015-08-15 02:10 +0200
  Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-14 16:10 +0200
    Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Lucas Stach <l.stach@pengutronix.de> - 2015-08-14 16:20 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-17 16:20 +0200

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