Re: "iommu/vt-d: Delegate DMA domain to generic iommu" series breaks megaraid_sas

Hi Qian, I just posted some fix patches. I cc'ed them in your email inbox as well. Can you please check whether they happen to fix your issue? If not, do you mind posting more debug messages? Best regards, Baolu On 6/8/19 5:08 AM, Qian Cai wrote: The linux-next series "iommu/vt-d: Delegate DM

[PATCH 3/6] iommu/vt-d: Don't enable iommu's which have been ignored

The iommu driver will ignore some iommu units if there's no device under its scope or those devices have been explicitly set to bypass the DMA translation. Don't enable those iommu units, otherwise the devices under its scope won't work. Fixes: d8190dc638866 ("iommu/vt-d: Enable DMA remapping afte

[PATCH 4/6] iommu/vt-d: Fix suspicious RCU usage in probe_acpi_namespace_devices()

The drhd and device scope list should be iterated with the iommu global lock held. Otherwise, a suspicious RCU usage message will be displayed. [3.695886] = [3.695917] WARNING: suspicious RCU usage [3.695950] 5.2.0-rc2+ #2467 Not tainted [3.695981] -

[PATCH 1/6] iommu/vt-d: Don't return error when device gets right domain

If a device gets a right domain in add_device ops, it shouldn't return error. Fixes: 942067f1b6b97 ("iommu/vt-d: Identify default domains replaced with private") Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 6 -- 1 file changed, 6 deletions(-) diff --git a/drivers/iommu/intel-

[PATCH 6/6] iommu/vt-d: Consolidate domain_init() to avoid duplication

The domain_init() and md_domain_init() do almost the same job. Consolidate them to avoid duplication. Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 123 +++- 1 file changed, 36 insertions(+), 87 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/

[PATCH 5/6] iommu/vt-d: Cleanup after delegating DMA domain to generic iommu

From: Sai Praneeth Prakhya [No functional changes] 1. Starting with commit df4f3c603aeb ("iommu/vt-d: Remove static identity map code") there are no callers for iommu_prepare_rmrr_dev() but the implementation of the function still exists, so remove it. Also, as a ripple effect remove get_domain_

[PATCH 2/6] iommu/vt-d: Set domain type for a private domain

Otherwise, domain_get_iommu() will be broken. Fixes: 942067f1b6b97 ("iommu/vt-d: Identify default domains replaced with private") Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu

[PATCH 0/6] iommu/vt-d: Fixes and cleanups for linux-next

Hi Joerg, This series includes several fixes and cleanups after delegating DMA domain to generic iommu. Please review and consider them for linux-next. Best regards, Baolu Lu Baolu (5): iommu/vt-d: Don't return error when device gets right domain iommu/vt-d: Set domain type for a private dom

Re: Device specific pass through in host systems - discuss user interface

On Sat, 2019-06-08 at 09:27 +0200, h...@lst.de wrote: > Just curious, what exactly is the use case? Explaining how someone > would wan to use this should drive the way we design an interface for it. Makes sense. Some example use cases: 1. Assume an SR-IOV device and if the admin decides to use s

Re: Device specific pass through in host systems - discuss user interface

Just curious, what exactly is the use case? Explaining how someone would wan to use this should drive the way we design an interface for it. ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu