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 [thread overview]
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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next reply other threads:[~2019-09-25 13:23 UTC|newest]
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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