search for: hypersivors

On Fri, 2018-08-03 at 09:02 -0700, Christoph Hellwig wrote: > On Fri, Aug 03, 2018 at 10:58:36AM -0500, Benjamin Herrenschmidt wrote: > > On Fri, 2018-08-03 at 00:05 -0700, Christoph Hellwig wrote: > > > > 2- Make virtio use the DMA API with our custom platform-provided > > > > swiotlb callbacks when needed, that is when not using IOMMU *and* > > > >

On Fri, 2018-08-03 at 09:02 -0700, Christoph Hellwig wrote: > On Fri, Aug 03, 2018 at 10:58:36AM -0500, Benjamin Herrenschmidt wrote: > > On Fri, 2018-08-03 at 00:05 -0700, Christoph Hellwig wrote: > > > > 2- Make virtio use the DMA API with our custom platform-provided > > > > swiotlb callbacks when needed, that is when not using IOMMU *and* > > > >

...o is defined to bypass dma translations, it is very clearly stated in the spec. It has some ill-defined bits to bypass it, so if you want the dma mapping API to be used you'll have to set that bit (in its original form, a refined form, or an entirely newly defined sane form) and make sure your hypersivors always sets it. It's not rocket science, just a little bit for work to make sure your setup is actually going to work reliably and portably. > We aren't going to cancel years of HW and SW development for our Maybe you should have actually read the specs you are claiming to implemented...

...t; dma translations, it is very clearly stated in the spec. It has some > ill-defined bits to bypass it, so if you want the dma mapping API > to be used you'll have to set that bit (in its original form, a refined > form, or an entirely newly defined sane form) and make sure your > hypersivors always sets it. It's not rocket science, just a little bit > for work to make sure your setup is actually going to work reliably > and portably. I think you are conflating completely different things, let me try to clarify, we might actually be talking past each other. > > We are...

...t; dma translations, it is very clearly stated in the spec. It has some > ill-defined bits to bypass it, so if you want the dma mapping API > to be used you'll have to set that bit (in its original form, a refined > form, or an entirely newly defined sane form) and make sure your > hypersivors always sets it. It's not rocket science, just a little bit > for work to make sure your setup is actually going to work reliably > and portably. I think you are conflating completely different things, let me try to clarify, we might actually be talking past each other. > > We are...

Hi list readers, I am an experienced developer with only nominal configuration talent. These days, mostly I use ubuntu linux, but have used Debian, WhiteBox, CentOS, RH, Fedora. I have been using Sun VirtualBox to very great effect and hope for better performance by installing and using xen. I also intend to use Dom0 exclusively as a host, and not install any other packages. Instead, I expect to