From: Julien Grall <jgrall@amazon.com>
Hi all,
This series is a collection of bug fixes for the IOMMU teardown code.
All of them are candidate for 4.15 as they can either leak memory or
lead to host crash/host corruption.
This is sent directly on xen-devel because all the issues were either
introduced in 4.15 or happen in the domain creation code.
Major changes since v2:
- patch #1 "xen/x86: p2m: Don't map the special pages in the IOMMU
page-tables" has been removed. This requires Jan's patch [2] to
fully mitigate memory leaks.
Cheers,
[1] https://lore.kernel.org/xen-devel/1b6a411b-84e7-bfb1-647e-511a13df838c@suse.com
Julien Grall (3):
xen/iommu: x86: Clear the root page-table before freeing the
page-tables
xen/x86: iommu: Ignore IOMMU mapping requests when a domain is dying
xen/iommu: x86: Harden the IOMMU page-table allocator
xen/drivers/passthrough/amd/iommu_map.c | 13 ++++++
xen/drivers/passthrough/amd/pci_amd_iommu.c | 12 +++++-
xen/drivers/passthrough/vtd/iommu.c | 25 +++++++++++-
xen/drivers/passthrough/x86/iommu.c | 45 ++++++++++++++++++++-
xen/include/xen/iommu.h | 1 +
5 files changed, 93 insertions(+), 3 deletions(-)
--
2.17.1