[PATCH v2 0/2] iommu/arm-smmu-v3: Fix SVA vs. HAFT issues
Robin Murphy
robin.murphy at arm.com
Thu Jul 23 07:19:42 PDT 2026
v1: https://lore.kernel.org/all/878cd6bcbbe2d5677d2f63da13294c148268552c.1782927917.git.robin.murphy@arm.com/
Per the discussion on v1, the aim here is just to make things safe and
functionally correct for now, and now with a command-line option for
distro users to get themselves out of a corner if they really need to,
I think that's reasonable enough for HAFT being a very new feature.
Thanks,
Robin.
Robin Murphy (2):
arm64: Add override for MMFR1.HAFDBS
iommu/arm-smmu-v3: Add HAFT support for SVA
Documentation/admin-guide/kernel-parameters.txt | 3 +++
arch/arm64/kernel/pi/idreg-override.c | 2 ++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 5 +++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 9 ++++++++-
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 3 +++
5 files changed, 21 insertions(+), 1 deletion(-)
--
2.54.0.dirty
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