Re: [PATCH v2] iommu/amd: Fix interrupt remapping when disable guest_mode

From	Joerg Roedel <joro@8bytes.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2] iommu/amd: Fix interrupt remapping when disable guest_mode
Date	2017-06-28 11:10 +0200
Message-ID	<tXh8Z-4TP-7@gated-at.bofh.it> (permalink)
References	<tXh8Z-4TP-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Suravee,

On Mon, Jun 26, 2017 at 04:28:04AM -0500, Suravee Suthikulpanit wrote:
> Pass-through devices to VM guest can get updated IRQ affinity
> information via irq_set_affinity() when not running in guest mode.
> Currently, AMD IOMMU driver in GA mode ignores the updated information
> if the pass-through device is setup to use vAPIC regardless of guest_mode.
> This could cause invalid interrupt remapping.
> 
> Also, the guest_mode bit should be set and cleared only when
> SVM updates posted-interrupt interrupt remapping information.
> 
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> Cc: Joerg Roedel <jroedel@suse.de>

Can you please provide a 'Fixes:' tag too? No need to resend the whole
patch, just reply with the tag and I'll add it when applying this patch.


Thanks,

	Joerg

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Re: [PATCH v2] iommu/amd: Fix interrupt remapping when disable  guest_mode Joerg Roedel <joro@8bytes.org> - 2017-06-28 11:10 +0200

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