Re: [PATCH] iommu/of: Handle PCI aliases properly

2017-07-26 Thread Joerg Roedel
On Wed, May 31, 2017 at 06:52:29PM +0100, Robin Murphy wrote: > When a PCI device has DMA quirks, we need to ensure that an upstream > IOMMU knows about all possible aliases, since the presence of a DMA > quirk does not preclude the device still also emitting transactions > (e.g. MSIs) on its 'real

Re: [PATCH] iommu/of: Handle PCI aliases properly

2017-07-25 Thread Robin Murphy
On 31/05/17 18:52, Robin Murphy wrote: > When a PCI device has DMA quirks, we need to ensure that an upstream > IOMMU knows about all possible aliases, since the presence of a DMA > quirk does not preclude the device still also emitting transactions > (e.g. MSIs) on its 'real' RID. Similarly, the r

[PATCH] iommu/of: Handle PCI aliases properly

2017-05-31 Thread Robin Murphy
When a PCI device has DMA quirks, we need to ensure that an upstream IOMMU knows about all possible aliases, since the presence of a DMA quirk does not preclude the device still also emitting transactions (e.g. MSIs) on its 'real' RID. Similarly, the rules for bridge aliasing are relatively complex