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From: Alexander Graf <agraf@suse.de>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: qemu-ppc@nongnu.org, Badari Pulavarty <pbadari@us.ibm.com>,
	qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2] spapr_pci: Advertise MSI quota
Date: Wed, 11 Jun 2014 14:18:51 +0200	[thread overview]
Message-ID: <5398492B.7060305@suse.de> (raw)
In-Reply-To: <1402476573-18404-1-git-send-email-aik@ozlabs.ru>

On 06/11/2014 10:49 AM, Alexey Kardashevskiy wrote:
> From: Badari Pulavarty <pbadari@us.ibm.com>
>
> Hotplug of multiple disks fails due to MSI vector quota check.
> Number of MSI vectors default to 8 allowing only 4 devices.
> This happens on RHEL6.5 guest. RHEL7 and SLES11 guests fallback
> to INTX.
>
> One way to workaround the issue is to increase total MSIs,
> so that MSI quota check allows us to hotplug multiple disks.
>
> This sets the quota to the maximum number of interupts XICS has
> which is 1024 now (XICS_IRQS). This moves XICS_IRQS from spapr.c
> to xics.h for wider visibility.
>
> Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
> [aik: put XICS_IRQS=1024 instead of 64i, fixed endianness and size]
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>

Thanks, applied to ppc-next.


Alex

      reply	other threads:[~2014-06-11 12:19 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-11  8:49 [Qemu-devel] [PATCH v2] spapr_pci: Advertise MSI quota Alexey Kardashevskiy
2014-06-11 12:18 ` Alexander Graf [this message]

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