RE: [PATCH] virtio-iommu: Default to bypass during boot

2021-03-04 Thread Tian, Kevin
> From: Jean-Philippe Brucker > Sent: Friday, February 26, 2021 9:01 PM > > On Fri, Feb 26, 2021 at 08:11:41AM +, Tian, Kevin wrote: > > > From: Qemu-devel bounces+kevin.tian=intel@nongnu.org> > > > On Behalf Of Jean-Philippe Brucker > > > > > > On Sun, Feb 21, 2021 at 06:45:18AM -0500,

Re: [PATCH] virtio-iommu: Default to bypass during boot

2021-02-26 Thread Jean-Philippe Brucker
On Fri, Feb 26, 2021 at 08:11:41AM +, Tian, Kevin wrote: > > From: Qemu-devel > > On Behalf Of Jean-Philippe Brucker > > > > On Sun, Feb 21, 2021 at 06:45:18AM -0500, Michael S. Tsirkin wrote: > > > On Thu, Feb 18, 2021 at 11:59:30AM +0100, Jean-Philippe Brucker wrote: > > > > Currently the v

RE: [PATCH] virtio-iommu: Default to bypass during boot

2021-02-26 Thread Tian, Kevin
> From: Qemu-devel > On Behalf Of Jean-Philippe Brucker > > On Sun, Feb 21, 2021 at 06:45:18AM -0500, Michael S. Tsirkin wrote: > > On Thu, Feb 18, 2021 at 11:59:30AM +0100, Jean-Philippe Brucker wrote: > > > Currently the virtio-iommu device must be programmed before it allows > > > DMA from any

Re: [PATCH] virtio-iommu: Default to bypass during boot

2021-02-25 Thread Jean-Philippe Brucker
On Sun, Feb 21, 2021 at 06:45:18AM -0500, Michael S. Tsirkin wrote: > On Thu, Feb 18, 2021 at 11:59:30AM +0100, Jean-Philippe Brucker wrote: > > Currently the virtio-iommu device must be programmed before it allows > > DMA from any PCI device. This can make the VM entirely unusable when a > > virti

Re: [PATCH] virtio-iommu: Default to bypass during boot

2021-02-21 Thread Michael S. Tsirkin
On Thu, Feb 18, 2021 at 11:59:30AM +0100, Jean-Philippe Brucker wrote: > Currently the virtio-iommu device must be programmed before it allows > DMA from any PCI device. This can make the VM entirely unusable when a > virtio-iommu driver isn't present, for example in a bootloader that > loads the O