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* [PATCH v13 0/6] iommu: Enhance IOMMU default DMA mode build options
@ 2021-06-16 11:03 John Garry
  2021-06-16 11:03 ` [PATCH v13 1/6] iommu: Deprecate Intel and AMD cmdline methods to enable strict mode John Garry
                   ` (5 more replies)
  0 siblings, 6 replies; 19+ messages in thread
From: John Garry @ 2021-06-16 11:03 UTC (permalink / raw)
  To: joro, will, dwmw2, baolu.lu, robin.murphy, corbet
  Cc: linux-kernel, iommu, linuxarm, thunder.leizhen, chenxiang66,
	linux-doc, John Garry

This is a reboot of Zhen Lei's series from a couple of years ago, which
never made it across the line.

I still think that it has some value, so taking up the mantle.

Motivation:
Allow lazy mode be default mode for DMA domains for all ARCHs, and not
only those who hardcode it (to be lazy). For ARM64, currently we must use
a kernel command line parameter to use lazy mode, which is less than
ideal.

I have now included the print for strict/lazy mode, which I originally
sent in:
https://lore.kernel.org/linux-iommu/72eb3de9-1d1c-ae46-c5a9-95f26525d435@huawei.com/

There was some concern there about drivers and their custom prints
conflicting with the print in that patch, but I think that it
should be ok.

Differences to v12:
- Rebase to next-20210611 and include patch "iommu: Update "iommu.strict"
  documentation" as a baseline
- Add Robin's RB tags (thanks!)
	- Please let me know if not ok with kernel-parameters.txt update
	  in 3/6
- Add a patch to mark x86 strict cmdline params as deprecated
- Improve wording in Kconfig change and tweak iommu_dma_strict declaration

Differences to v11:
- Rebase to next-20210610
- Drop strict mode globals in Intel and AMD drivers
- Include patch to print strict vs lazy mode
- Include patch to remove argument from iommu_set_dma_strict()

Differences to v10:
- Rebase to v5.13-rc4
- Correct comment and typo in Kconfig (Randy)
- Make Kconfig choice depend on relevant architectures
- Update kernel-parameters.txt for CONFIG_IOMMU_DEFAULT_{LAZY,STRICT}

John Garry (3):
  iommu: Deprecate Intel and AMD cmdline methods to enable strict mode
  iommu: Print strict or lazy mode at init time
  iommu: Remove mode argument from iommu_set_dma_strict()

Zhen Lei (3):
  iommu: Enhance IOMMU default DMA mode build options
  iommu/vt-d: Add support for IOMMU default DMA mode build options
  iommu/amd: Add support for IOMMU default DMA mode build options

 .../admin-guide/kernel-parameters.txt         |  8 ++--
 drivers/iommu/Kconfig                         | 41 +++++++++++++++++++
 drivers/iommu/amd/amd_iommu_types.h           |  6 ---
 drivers/iommu/amd/init.c                      |  7 ++--
 drivers/iommu/amd/iommu.c                     |  6 ---
 drivers/iommu/intel/iommu.c                   | 16 ++++----
 drivers/iommu/iommu.c                         | 12 ++++--
 include/linux/iommu.h                         |  2 +-
 8 files changed, 66 insertions(+), 32 deletions(-)

-- 
2.26.2


^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2021-06-18  7:49 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-16 11:03 [PATCH v13 0/6] iommu: Enhance IOMMU default DMA mode build options John Garry
2021-06-16 11:03 ` [PATCH v13 1/6] iommu: Deprecate Intel and AMD cmdline methods to enable strict mode John Garry
2021-06-17 19:01   ` Robin Murphy
2021-06-18  7:43     ` John Garry
2021-06-16 11:03 ` [PATCH v13 2/6] iommu: Print strict or lazy mode at init time John Garry
2021-06-16 11:03 ` [PATCH v13 3/6] iommu: Enhance IOMMU default DMA mode build options John Garry
2021-06-16 11:03 ` [PATCH v13 4/6] iommu/vt-d: Add support for " John Garry
2021-06-17  7:32   ` Lu Baolu
2021-06-17  8:00     ` John Garry
2021-06-17 19:03       ` Robin Murphy
2021-06-18  1:46       ` Lu Baolu
2021-06-18  7:31         ` John Garry
2021-06-16 11:03 ` [PATCH v13 5/6] iommu/amd: " John Garry
2021-06-16 11:03 ` [PATCH v13 6/6] iommu: Remove mode argument from iommu_set_dma_strict() John Garry
2021-06-17  7:36   ` Lu Baolu
2021-06-17  7:41     ` John Garry
2021-06-18  1:52       ` Lu Baolu
2021-06-17 18:56     ` Robin Murphy
2021-06-18  1:51       ` Lu Baolu

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