From: Eric Auger <eric.auger@redhat.com>
To: eric.auger@redhat.com, eric.auger.pro@gmail.com,
christoffer.dall@linaro.org, marc.zyngier@arm.com,
robin.murphy@arm.com, alex.williamson@redhat.com,
will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de,
jason@lakedaemon.net, linux-arm-kernel@lists.infradead.org
Cc: kvm@vger.kernel.org, drjones@redhat.com,
linux-kernel@vger.kernel.org, pranav.sawargaonkar@gmail.com,
iommu@lists.linux-foundation.org, punit.agrawal@arm.com,
diana.craciun@nxp.com
Subject: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions
Date: Tue, 15 Nov 2016 13:09:13 +0000 [thread overview]
Message-ID: <1479215363-2898-1-git-send-email-eric.auger@redhat.com> (raw)
Following LPC discussions, we now report reserved regions through
iommu-group sysfs reserved_regions attribute file.
Reserved regions are populated through the IOMMU get_resv_region callback
(former get_dm_regions), now implemented by amd-iommu, intel-iommu and
arm-smmu.
The intel-iommu reports the [FEE0_0000h - FEF0_000h] MSI window as an
IOMMU_RESV_NOMAP reserved region.
arm-smmu reports the MSI window (arbitrarily located at 0x8000000 and
1MB large) and the PCI host bridge windows.
The series integrates a not officially posted patch from Robin:
"iommu/dma: Allow MSI-only cookies".
This series currently does not address IRQ safety assessment.
Best Regards
Eric
Git: complete series available at
https://github.com/eauger/linux/tree/v4.9-rc5-reserved-rfc-v3
History:
RFC v2 -> v3:
- switch to an iommu-group sysfs API
- use new dummy allocator provided by Robin
- dummy allocator initialized by vfio-iommu-type1 after enumerating
the reserved regions
- at the moment ARM MSI base address/size is left unchanged compared
to v2
- we currently report reserved regions and not usable IOVA regions as
requested by Alex
RFC v1 -> v2:
- fix intel_add_reserved_regions
- add mutex lock/unlock in vfio_iommu_type1
Eric Auger (10):
iommu/dma: Allow MSI-only cookies
iommu: Rename iommu_dm_regions into iommu_resv_regions
iommu: Add new reserved IOMMU attributes
iommu: iommu_alloc_resv_region
iommu: Do not map reserved regions
iommu: iommu_get_group_resv_regions
iommu: Implement reserved_regions iommu-group sysfs file
iommu/vt-d: Implement reserved region get/put callbacks
iommu/arm-smmu: Implement reserved region get/put callbacks
vfio/type1: Get MSI cookie
drivers/iommu/amd_iommu.c | 20 +++---
drivers/iommu/arm-smmu.c | 52 +++++++++++++++
drivers/iommu/dma-iommu.c | 116 ++++++++++++++++++++++++++-------
drivers/iommu/intel-iommu.c | 50 ++++++++++----
drivers/iommu/iommu.c | 141 ++++++++++++++++++++++++++++++++++++----
drivers/vfio/vfio_iommu_type1.c | 26 ++++++++
include/linux/dma-iommu.h | 7 ++
include/linux/iommu.h | 49 ++++++++++----
8 files changed, 391 insertions(+), 70 deletions(-)
--
1.9.1
next reply other threads:[~2016-11-15 13:09 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-15 13:09 Eric Auger [this message]
2016-11-15 13:09 ` [RFC v3 01/10] iommu/dma: Allow MSI-only cookies Eric Auger
2016-11-15 13:09 ` [RFC v3 02/10] iommu: Rename iommu_dm_regions into iommu_resv_regions Eric Auger
2016-12-06 17:30 ` Robin Murphy
2016-11-15 13:09 ` [RFC v3 03/10] iommu: Add new reserved IOMMU attributes Eric Auger
2016-12-06 17:28 ` Robin Murphy
2016-11-15 13:09 ` [RFC v3 04/10] iommu: iommu_alloc_resv_region Eric Auger
2016-11-29 16:11 ` Joerg Roedel
2016-11-30 9:41 ` Auger Eric
2016-12-06 17:30 ` Robin Murphy
2016-11-15 13:09 ` [RFC v3 05/10] iommu: Do not map reserved regions Eric Auger
2016-12-06 17:36 ` Robin Murphy
2016-12-07 15:15 ` Auger Eric
2016-11-15 13:09 ` [RFC v3 06/10] iommu: iommu_get_group_resv_regions Eric Auger
2016-12-06 18:13 ` Robin Murphy
2016-12-07 15:13 ` Auger Eric
2016-11-15 13:09 ` [RFC v3 07/10] iommu: Implement reserved_regions iommu-group sysfs file Eric Auger
2016-11-15 13:09 ` [RFC v3 08/10] iommu/vt-d: Implement reserved region get/put callbacks Eric Auger
2016-11-15 13:09 ` [RFC v3 09/10] iommu/arm-smmu: " Eric Auger
2016-12-06 18:55 ` Robin Murphy
2016-12-07 15:02 ` Auger Eric
2016-12-07 18:24 ` Robin Murphy
2016-12-08 7:57 ` Auger Eric
2016-11-15 13:09 ` [RFC v3 10/10] vfio/type1: Get MSI cookie Eric Auger
2016-11-18 5:34 ` [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Bharat Bhushan
2016-11-18 8:33 ` Auger Eric
2016-11-30 9:49 ` Auger Eric
2016-11-30 10:04 ` Ganapatrao Kulkarni
2016-11-30 10:14 ` Auger Eric
2016-11-30 10:52 ` Ganapatrao Kulkarni
2016-11-30 13:57 ` Robin Murphy
2016-11-30 10:37 ` Will Deacon
2016-11-30 14:08 ` Auger Eric
2016-11-30 14:41 ` Robin Murphy
2016-12-07 18:52 ` Shanker Donthineni
2016-12-08 7:34 ` Auger Eric
2016-12-08 3:56 ` Bharat Bhushan
2016-12-08 9:36 ` Auger Eric
2016-12-08 13:14 ` Robin Murphy
2016-12-08 13:36 ` Auger Eric
2016-12-08 15:46 ` Robin Murphy
2016-12-08 17:01 ` Alex Williamson
2016-12-08 18:42 ` Robin Murphy
2016-12-11 2:05 ` Don Dutile
2016-12-12 8:12 ` Auger Eric
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