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Re: [PATCH v2 1/1] irqchip/GICv2m: Add workaround for APM X-Gene GICv2m erratum

From Marc Zyngier <marc.zyngier@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 1/1] irqchip/GICv2m: Add workaround for APM X-Gene GICv2m erratum
Date 2015-10-07 09:20 +0200
Message-ID <qgRb4-6e5-5@gated-at.bofh.it> (permalink)
References <qfv2X-33F-13@gated-at.bofh.it> <qgJ3Q-2UE-9@gated-at.bofh.it>
Organization ARM Ltd

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On 06/10/15 23:32, Duc Dang wrote:
> APM X-Gene GICv2m implementation has an erratum where the
> MSI data needs to be the offset from the spi_start in order to
> trigger the correct MSI interrupt. This is different from the
> standard GICv2m implementation where the MSI data is the absolute
> value within the range from spi_start to (spi_start + num_spis)
> of each v2m frame.
> 
> This patch reads MSI_IIDR register (present in all GICv2m
> implementations) to identify X-Gene GICv2m implementation and
> apply workaround to change the data portion of MSI vector.
> 
> Signed-off-by: Duc Dang <dhdang@apm.com>

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>

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

[PATCH v2 1/1] irqchip/GICv2m: Add workaround for APM X-Gene GICv2m erratum Duc Dang <dhdang@apm.com> - 2015-10-07 00:40 +0200
  Re: [PATCH v2 1/1] irqchip/GICv2m: Add workaround for APM X-Gene  GICv2m erratum Marc Zyngier <marc.zyngier@arm.com> - 2015-10-07 09:20 +0200
    Re: [PATCH v2 1/1] irqchip/GICv2m: Add workaround for APM X-Gene  GICv2m erratum Duc Dang <dhdang@apm.com> - 2015-10-07 20:10 +0200

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