linux-kernel - [PATCH 0/4] RMRR related fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 13 May 2019 09:12:58 +0200
From:   Eric Auger <eric.auger@...hat.com>
To:     eric.auger.pro@...il.com, eric.auger@...hat.com, joro@...tes.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        dwmw2@...radead.org, lorenzo.pieralisi@....com,
        robin.murphy@....com, will.deacon@....com, hanjun.guo@...aro.org,
        sudeep.holla@....com
Cc:     alex.williamson@...hat.com
Subject: [PATCH 0/4] RMRR related fixes

Currently the Intel reserved region is attached to the
RMRR unit and when building the list of RMRR seen by a device
we link this unique reserved region without taking care of
potential multiple usage of this reserved region by several devices.

Also while reading the vtd spec it is unclear to me whether
the RMRR device scope referenced by an RMRR ACPI struct could
be a PCI-PCI bridge, in which case I think we also need to
check the device belongs to the PCI sub-hierarchy of the device
referenced in the scope. This would be true for device_has_rmrr()
and intel_iommu_get_resv_regions().

Eric Auger (4):
  iommu: Pass a GFP flag parameter to iommu_alloc_resv_region()
  iommu/vt-d: Duplicate iommu_resv_region objects per device list
  iommu/vt-d: Handle RMRR with PCI bridge device scopes
  iommu/vt-d: Handle PCI bridge RMRR device scopes in
    intel_iommu_get_resv_regions

 drivers/acpi/arm64/iort.c   |  3 +-
 drivers/iommu/amd_iommu.c   |  7 ++--
 drivers/iommu/arm-smmu-v3.c |  2 +-
 drivers/iommu/arm-smmu.c    |  2 +-
 drivers/iommu/intel-iommu.c | 68 +++++++++++++++++++++++--------------
 drivers/iommu/iommu.c       |  7 ++--
 include/linux/iommu.h       |  2 +-
 7 files changed, 55 insertions(+), 36 deletions(-)

-- 
2.20.1