Re: [PATCH RFC] vhost: basic device IOTLB support

2016-01-03 Thread Yang Zhang
On 2015/12/31 15:13, Jason Wang wrote: This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace(qemu) implementation of iommu for a secure DMA environment in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the

Re: [Qemu-devel] live migration vs device assignment (motivation)

2016-01-03 Thread Lan Tianyu
On 2015年12月30日 00:46, Michael S. Tsirkin wrote: > Interesting. So you sare saying merely ifdown/ifup is 100ms? > This does not sound reasonable. > Is there a chance you are e.g. getting IP from dhcp? > > If so that is wrong - clearly should reconfigure the old IP > back without playing with dhcp.

RE: [PATCH v2 2/2] KVM: x86: Add lowest-priority support for vt-d posted-interrupts

2016-01-03 Thread Wu, Feng
> -Original Message- > From: Radim Krčmář [mailto:rkrc...@redhat.com] > Sent: Thursday, December 24, 2015 1:22 AM > To: Wu, Feng > Cc: pbonz...@redhat.com; kvm@vger.kernel.org; linux- > ker...@vger.kernel.org > Subject: Re: [PATCH v2 2/2] KVM: x86: Add lowest-priority

Re: [PATCH RFC] vhost: basic device IOTLB support

2016-01-03 Thread Jason Wang
On 01/04/2016 09:39 AM, Yang Zhang wrote: > On 2015/12/31 15:13, Jason Wang wrote: >> This patch tries to implement an device IOTLB for vhost. This could be >> used with for co-operation with userspace(qemu) implementation of >> iommu for a secure DMA environment in guest. >> >> The idea is

Re: [PATCH RFC] vhost: basic device IOTLB support

2016-01-03 Thread Jason Wang
On 12/31/2015 07:17 PM, Michael S. Tsirkin wrote: > On Thu, Dec 31, 2015 at 03:13:45PM +0800, Jason Wang wrote: >> This patch tries to implement an device IOTLB for vhost. This could be >> used with for co-operation with userspace(qemu) implementation of >> iommu for a secure DMA environment in

Re: [RFC v4 0/5] Add virtio transport for AF_VSOCK

2016-01-03 Thread Jason Wang
On 12/22/2015 05:07 PM, Stefan Hajnoczi wrote: > This series is based on v4.4-rc2 and the "virtio: make find_vqs() > checkpatch.pl-friendly" patch I recently submitted. > > v4: > * Addressed code review comments from Alex Bennee > * MAINTAINERS file entries for new files > * Trace events