subject:"Re\: \[PATCH\/RFC\] iommu\/ipmmu\-vmsa\: Restrict IOMMU Domain Geometry to 32\-bit address space"

Re: [PATCH/RFC] iommu/ipmmu-vmsa: Restrict IOMMU Domain Geometry to 32-bit address space

2017-01-26 Thread Geert Uytterhoeven

Hi Robin, On Thu, Jan 26, 2017 at 12:23 PM, Robin Murphy wrote: > On 26/01/17 09:53, Geert Uytterhoeven wrote: >> Currently, the IPMMU/VMSA driver supports 32-bit I/O Virtual Addresses >> only, and thus sets io_pgtable_cfg.ias = 32. However, it doesn't force >> a 32-bit

Re: [PATCH/RFC] iommu/ipmmu-vmsa: Restrict IOMMU Domain Geometry to 32-bit address space

2017-01-26 Thread Robin Murphy

On 26/01/17 09:53, Geert Uytterhoeven wrote: > Currently, the IPMMU/VMSA driver supports 32-bit I/O Virtual Addresses > only, and thus sets io_pgtable_cfg.ias = 32. However, it doesn't force > a 32-bit IOVA space through the IOMMU Domain Geometry. > > Hence if a device (e.g. SYS-DMAC) rightfully

Re: [PATCH/RFC] iommu/ipmmu-vmsa: Restrict IOMMU Domain Geometry to 32-bit address space

2017-01-26 Thread Magnus Damm

Hi Geert, On Thu, Jan 26, 2017 at 6:53 PM, Geert Uytterhoeven wrote: > Currently, the IPMMU/VMSA driver supports 32-bit I/O Virtual Addresses > only, and thus sets io_pgtable_cfg.ias = 32. However, it doesn't force > a 32-bit IOVA space through the IOMMU Domain