Re: [PATCH v2 00/21] Allow compile-testing NO_DMA (drivers)

On Fri, Mar 16, 2018 at 8:51 AM, Geert Uytterhoeven wrote: > Hi all, > > If NO_DMA=y, get_dma_ops() returns a reference to the non-existing > symbol bad_dma_ops, thus causing a link failure if it is ever used. > > The intention of this is twofold: > 1. To catch

[PATCH v2 2/2] iommu/amd: Add basic debugfs infrastructure for AMD IOMMU

Implement a skeleton framework for debugfs support in the AMD IOMMU. Signed-off-by: Gary R Hook --- drivers/iommu/Makefile|1 + drivers/iommu/amd_iommu_debugfs.c | 45 + drivers/iommu/amd_iommu_init.c|7 --

[PATCH v2 1/2] iommu - Enable debugfs exposure of the IOMMU

Provide base enablement for using debugfs to expose internal data of an IOMMU driver. When called, create the /sys/kernel/debug/iommu directory. Emit a strong warning at boot time to indicate that this feature is enabled. This patch adds a top-level function that will create the (above)

[PATCH v2 0/2] Base enablement of IOMMU debugfs support

These patches create a top-level function to create a debugfs directory for the IOMMU, under which drivers may create and populate-specific directories for their device internals. Patch 1: general IOMMU enablement Patch 2: basic AMD enablement to demonstrate linkage with patch 1 Introduce a new

Re: [PATCH] iommu/vt-d: fix usage of force parameter in intel_ir_reconfigure_irte()

On 3/6/2018 5:39 PM, Jagannathan Raman wrote: It was noticed that the IRTE configured for guest OS kernel was over-written while the guest was running. As a result, vt-d Posted Interrupts configured for the guest are not being delivered directly, and instead bounces off the host. Every

Re: [PATCH] iommu: rockchip: fix building without CONFIG_OF

Hi Arnd, On 04/04/18 11:23, Arnd Bergmann wrote: We get a build error when compiling the iommu driver without CONFIG_OF: drivers/iommu/rockchip-iommu.c: In function 'rk_iommu_of_xlate': drivers/iommu/rockchip-iommu.c:1101:2: error: implicit declaration of function 'of_dev_put'; did you mean

Re: [PATCH] iommu: rockchip: fix building without CONFIG_OF

Hi Amd, Thanks for your patch. On 04/04/2018 06:23 PM, Arnd Bergmann wrote: We get a build error when compiling the iommu driver without CONFIG_OF: drivers/iommu/rockchip-iommu.c: In function 'rk_iommu_of_xlate': drivers/iommu/rockchip-iommu.c:1101:2: error: implicit declaration of function

[PATCH] iommu: amd: hide unused iommu_table_lock

The newly introduced lock is only used when CONFIG_IRQ_REMAP is enabled: drivers/iommu/amd_iommu.c:86:24: error: 'iommu_table_lock' defined but not used [-Werror=unused-variable] static DEFINE_SPINLOCK(iommu_table_lock); This moves the definition next to the user, within the #ifdef protected

[PATCH] iommu: rockchip: fix building without CONFIG_OF

We get a build error when compiling the iommu driver without CONFIG_OF: drivers/iommu/rockchip-iommu.c: In function 'rk_iommu_of_xlate': drivers/iommu/rockchip-iommu.c:1101:2: error: implicit declaration of function 'of_dev_put'; did you mean 'of_node_put'?

Re: [PATCH 27/37] iommu/arm-smmu-v3: Register fault workqueue

On 22/03/18 01:09, Yisheng Xie wrote: > Hi Jean, > > On 2018/3/21 21:24, Jean-Philippe Brucker wrote: >> Hi Yisheng, >> >> On 19/03/18 11:03, Yisheng Xie wrote: >>> Hi Jean, >>> >>> [...] @@ -3168,6 +3260,13 @@ static int arm_smmu_device_probe(struct platform_device *pdev) if