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

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 inste

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

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 simpl

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

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 g

Re: [PATCH 2/2] virtio_balloon: fix race between migration and ballooning

On Fri, Jan 01, 2016 at 11:36:13AM +0200, Michael S. Tsirkin wrote: > On Mon, Dec 28, 2015 at 08:35:13AM +0900, Minchan Kim wrote: > > In balloon_page_dequeue, pages_lock should cover the loop > > (ie, list_for_each_entry_safe). Otherwise, the cursor page could > > be isolated by compaction and the

Re: [PATCH v4 2/2] virtio_balloon: Use a workqueue instead of "vballoon" kthread

Hello, Michael. On Sat, Jan 02, 2016 at 11:36:03PM +0200, Michael S. Tsirkin wrote: > > Why so? As long as the maximum concurrently used workers are not > > high, 1/5 second or even a lot longer sleeps are completely fine. > > I always thought the right way to defer executing a work queue item >

Re: [PATCH v2 17/32] arm: define __smp_xxx

On Sat, Jan 02, 2016 at 11:24:38AM +, Russell King - ARM Linux wrote: > On Thu, Dec 31, 2015 at 09:07:59PM +0200, Michael S. Tsirkin wrote: > > This defines __smp_xxx barriers for arm, > > for use by virtualization. > > > > smp_xxx barriers are removed as they are > > defined correctly by asm-

Re: [PATCH v2 32/32] virtio_ring: use virt_store_mb

On Fri, Jan 01, 2016 at 08:23:46PM +0300, Sergei Shtylyov wrote: > Hello. > > On 12/31/2015 10:09 PM, Michael S. Tsirkin wrote: > > >We need a full barrier after writing out event index, using > >virt_store_mb there seems better than open-coding. As usual, we need a > >wrapper to account for str