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From: Joerg Roedel <joro@8bytes.org>
To: iommu@lists.linux-foundation.org, Joerg Roedel <joro@8bytes.org>
Cc: Filippo Sironi <sironi@amazon.de>, jroedel@suse.de
Subject: [PATCH 0/6] iommu/amd: Locking Fixes
Date: Wed, 25 Sep 2019 15:22:54 +0200
Message-ID: <20190925132300.3038-1-joro@8bytes.org> (raw)

Hi,

here are a couple of fixes for the amd iommu driver to fix a
few locking issues around protection-domains. Main problem
was that some traversals of ->dev_list were not locked in
any form, causing potential race conditions.

But there are more issues fixed here, for example the racy
access to protection_domain->updated and races in the
attach/detach_device code paths.

Changes are boot-tested with lockdep enabled, looked all
good so far.

Please review.

Thanks,

	Joerg

Joerg Roedel (6):
  iommu/amd: Remove domain->updated
  iommu/amd: Remove amd_iommu_devtable_lock
  iommu/amd: Take domain->lock for complete attach/detach path
  iommu/amd: Check for busy devices earlier in attach_device()
  iommu/amd: Lock dev_data in attach/detach code paths
  iommu/amd: Lock code paths traversing protection_domain->dev_list

 drivers/iommu/amd_iommu.c       | 166 ++++++++++++++++----------------
 drivers/iommu/amd_iommu_types.h |   4 +-
 2 files changed, 85 insertions(+), 85 deletions(-)

-- 
2.17.1

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Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-25 13:22 Joerg Roedel [this message]
2019-09-25 13:22 ` [PATCH 1/6] iommu/amd: Remove domain->updated Joerg Roedel
2019-09-25 15:45   ` Sironi, Filippo via iommu
2019-09-26  6:18   ` Jerry Snitselaar
2019-09-25 13:22 ` [PATCH 2/6] iommu/amd: Remove amd_iommu_devtable_lock Joerg Roedel
2019-09-25 15:50   ` Sironi, Filippo via iommu
2019-09-25 15:52     ` Sironi, Filippo via iommu
2019-09-26  6:24   ` Jerry Snitselaar
2019-09-25 13:22 ` [PATCH 3/6] iommu/amd: Take domain->lock for complete attach/detach path Joerg Roedel
2019-09-25 15:53   ` Sironi, Filippo via iommu
2019-09-26  6:34   ` Jerry Snitselaar
2019-09-25 13:22 ` [PATCH 4/6] iommu/amd: Check for busy devices earlier in attach_device() Joerg Roedel
2019-09-25 15:55   ` Sironi, Filippo via iommu
2019-09-26  6:37   ` Jerry Snitselaar
2019-09-25 13:22 ` [PATCH 5/6] iommu/amd: Lock dev_data in attach/detach code paths Joerg Roedel
2019-09-25 15:56   ` Sironi, Filippo via iommu
2019-09-26  6:41   ` Jerry Snitselaar
2019-09-25 13:23 ` [PATCH 6/6] iommu/amd: Lock code paths traversing protection_domain->dev_list Joerg Roedel
2019-09-25 15:58   ` Sironi, Filippo via iommu
2019-09-26  6:48   ` Jerry Snitselaar
2019-09-26  0:25 ` [PATCH 0/6] iommu/amd: Locking Fixes Jerry Snitselaar
2019-09-26  5:46   ` Joerg Roedel

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