From: Eric Auger <eric.auger@linaro.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: eric.auger@st.com, robin.murphy@arm.com,
alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org,
jason@lakedaemon.net, marc.zyngier@arm.com,
christoffer.dall@linaro.org,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
suravee.suthikulpanit@amd.com, patches@linaro.org,
linux-kernel@vger.kernel.org, Manish.Jaggi@caviumnetworks.com,
Bharat.Bhushan@freescale.com, pranav.sawargaonkar@gmail.com,
p.fedin@samsung.com, iommu@lists.linux-foundation.org
Subject: Re: [RFC v4 07/14] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag
Date: Mon, 29 Feb 2016 16:25:39 +0100 [thread overview]
Message-ID: <56D462F3.1020206@linaro.org> (raw)
In-Reply-To: <alpine.DEB.2.11.1602261904500.3638@nanos>
Hi Thomas,
On 02/26/2016 07:06 PM, Thomas Gleixner wrote:
> On Fri, 26 Feb 2016, Eric Auger wrote:
>
>> Let's introduce a new msi_domain_info flag value, MSI_FLAG_IRQ_REMAPPING
>> meant to tell the domain supports IRQ REMAPPING, also known as Interrupt
>> Translation Service. On Intel HW this capability is abstracted on IOMMU
>> side while on ARM it is abstracted on MSI controller side.
>>
>> GICv3 ITS HW is the first HW advertising that feature.
>
> No. We add the flag, epxlain what it does and then in a second step add the
> user _after_ all other preliminaries are implemented.
Sure I will proceed that way.
Best Regards
Eric
>
> Thanks,
>
> tglx
>
next prev parent reply other threads:[~2016-02-29 15:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 17:35 [RFC v4 00/14] KVM PCIe/MSI passthrough on ARM/ARM64 Eric Auger
2016-02-26 17:35 ` [RFC v4 01/14] iommu: Add DOMAIN_ATTR_MSI_MAPPING attribute Eric Auger
2016-02-26 17:35 ` [RFC v4 02/14] iommu: introduce a reserved iova cookie Eric Auger
2016-02-26 17:35 ` [RFC v4 03/14] dma-reserved-iommu: alloc/free_reserved_iova_domain Eric Auger
2016-02-26 17:35 ` [RFC v4 04/14] dma-reserved-iommu: reserved binding rb-tree and helpers Eric Auger
2016-02-26 17:35 ` [RFC v4 05/14] dma-reserved-iommu: iommu_get/put_single_reserved Eric Auger
2016-02-26 17:35 ` [RFC v4 06/14] dma-reserved-iommu: iommu_unmap_reserved Eric Auger
2016-02-26 17:35 ` [RFC v4 07/14] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag Eric Auger
2016-02-26 18:06 ` Thomas Gleixner
2016-02-29 15:25 ` Eric Auger [this message]
2016-02-26 17:35 ` [RFC v4 08/14] msi: export msi_get_domain_info Eric Auger
2016-02-26 17:35 ` [RFC v4 09/14] msi: IOMMU map the doorbell address when needed Eric Auger
2016-02-26 18:19 ` Thomas Gleixner
2016-02-29 15:27 ` Eric Auger
2016-02-26 17:35 ` [RFC v4 10/14] vfio: introduce VFIO_IOVA_RESERVED vfio_dma type Eric Auger
2016-02-26 17:35 ` [RFC v4 11/14] vfio: allow the user to register reserved iova range for MSI mapping Eric Auger
2016-02-26 17:35 ` [RFC v4 12/14] vfio/type1: also check IRQ remapping capability at msi domain Eric Auger
2016-02-26 17:35 ` [RFC v4 13/14] iommu/arm-smmu: do not advertise IOMMU_CAP_INTR_REMAP Eric Auger
2016-02-26 17:35 ` [RFC v4 14/14] vfio/type1: return MSI mapping requirements with VFIO_IOMMU_GET_INFO Eric Auger
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