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Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1

From Marc Zyngier <marc.zyngier@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1
Date 2015-09-11 13:10 +0200
Message-ID <q7uno-8bA-25@gated-at.bofh.it> (permalink)
References (2 earlier) <q6Tea-3WQ-31@gated-at.bofh.it> <q76O6-6hn-7@gated-at.bofh.it> <q7cTw-6MC-35@gated-at.bofh.it> <q7udI-7KK-17@gated-at.bofh.it> <q7udI-7KK-25@gated-at.bofh.it>
Organization ARM Ltd

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On 11/09/15 11:59, Julien Grall wrote:
> 
> 
> On 11/09/2015 11:54, Ian Campbell wrote:
>> On Thu, 2015-09-10 at 17:23 +0100, Julien Grall wrote:
>>> I applied the two patches on top of linus/master and I'm able to boot
>>> correctly on X-gene. Thank you!
>>
>> Perhaps we should replicate this approach in Xen and get rid of
>>   PLATFORM_QUIRK_GIC_64K_STRIDE?
> 
> I was thinking to do it. But, I wasn't sure if it was worth to get a 
> such "ugly" patch compare to the quirk.

It is not a quirk. It is actually recommended in the SBSA spec. The
patch is ugly because we can't do the right thing on the one platform
that actually implemented ARM's own recommendation (we can't tell the
bloody firmware to stop overriding our DT).

I would otherwise have added a "arm,use-sbsa-aliasing" property (or
something similar) instead of trying to guess things...

	M.
-- 
Jazz is not dead. It just smells funny...
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Thread

Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Julien Grall <julien.grall@citrix.com> - 2015-09-09 21:30 +0200
  Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Marc Zyngier <marc.zyngier@arm.com> - 2015-09-10 12:00 +0200
    Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Marc Zyngier <marc.zyngier@arm.com> - 2015-09-10 13:00 +0200
    Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Julien Grall <julien.grall@citrix.com> - 2015-09-10 18:30 +0200
      Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Julien Grall <julien.grall@citrix.com> - 2015-09-10 18:40 +0200
      Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Marc Zyngier <marc.zyngier@arm.com> - 2015-09-10 18:40 +0200
      Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Ian Campbell <ian.campbell@citrix.com> - 2015-09-11 13:00 +0200
        Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Julien Grall <julien.grall@citrix.com> - 2015-09-11 13:00 +0200
          Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Marc Zyngier <marc.zyngier@arm.com> - 2015-09-11 13:10 +0200
            Re: [PATCH v4 3/4] irqchip: GIC: Convert to EOImode == 1 Julien Grall <julien.grall@citrix.com> - 2015-09-11 15:00 +0200

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