Re: [PATCH v8 05/29] iommu: Add a timeout parameter for PRQ response

2019-06-04 Thread Jacob Pan
On Tue, 4 Jun 2019 11:52:18 +0100 Jean-Philippe Brucker wrote: > On 03/06/2019 23:32, Alex Williamson wrote: > > It doesn't seem to make much sense to include this patch without > > also including "iommu: handle page response timeout". Was that one > > lost? Dropped? Lives elsewhere? > >

Re: [PATCH v8 05/29] iommu: Add a timeout parameter for PRQ response

2019-06-04 Thread Jean-Philippe Brucker
On 03/06/2019 23:32, Alex Williamson wrote: > It doesn't seem to make much sense to include this patch without also > including "iommu: handle page response timeout". Was that one lost? > Dropped? Lives elsewhere? The first 7 patches come from my sva/api branch, where I had forgotten to add the

Re: [PATCH v8 05/29] iommu: Add a timeout parameter for PRQ response

2019-06-03 Thread Alex Williamson
On Sun, 26 May 2019 18:09:40 +0200 Eric Auger wrote: > From: Jacob Pan > > When an IO page request is processed outside IOMMU subsystem, response > can be delayed or lost. Add a tunable setup parameter such that user can > choose the timeout for IOMMU to track pending page requests. > > This

[PATCH v8 05/29] iommu: Add a timeout parameter for PRQ response

2019-05-26 Thread Eric Auger
From: Jacob Pan When an IO page request is processed outside IOMMU subsystem, response can be delayed or lost. Add a tunable setup parameter such that user can choose the timeout for IOMMU to track pending page requests. This timeout mechanism is a basic safety net which can be implemented in