On Tue, Nov 08, 2016 at 09:46:47AM -0700, Logan Gunthorpe wrote:
> On 08/11/16 08:58 AM, Stefan Hajnoczi wrote:
> > My concern with the current implementation is that a PCI MMIO access
> > invokes a synchronous blk_*() call. That can pause vcpu execution while
> > I/O is happening and therefore le
Hey,
On 08/11/16 08:58 AM, Stefan Hajnoczi wrote:
> My concern with the current implementation is that a PCI MMIO access
> invokes a synchronous blk_*() call. That can pause vcpu execution while
> I/O is happening and therefore leads to unresponsive guests. QEMU's
> monitor interface is also blo
On Mon, Nov 07, 2016 at 10:09:29AM -0700, Logan Gunthorpe wrote:
> On 07/11/16 03:28 AM, Stefan Hajnoczi wrote:
> > It may be too early to merge this code into qemu.git if there is no
> > hardware spec and this is a prototype device that is subject to change.
>
> Fair enough, though the interface
Hey,
On 07/11/16 03:28 AM, Stefan Hajnoczi wrote:
> It may be too early to merge this code into qemu.git if there is no
> hardware spec and this is a prototype device that is subject to change.
Fair enough, though the interface is so simple I don't know what could
possibly change.
> I'm wonderin
On Fri, Nov 04, 2016 at 09:47:33AM -0600, Logan Gunthorpe wrote:
> On 04/11/16 04:49 AM, Stefan Hajnoczi wrote:
> > QEMU already has NVDIMM support (https://pmem.io/). It can be used both
> > for passthrough and fake non-volatile memory:
> >
> > qemu-system-x86_64 \
> > -M pc,nvdimm=on \
>
Hi Stefan,
On 04/11/16 04:49 AM, Stefan Hajnoczi wrote:
> QEMU already has NVDIMM support (https://pmem.io/). It can be used both
> for passthrough and fake non-volatile memory:
>
> qemu-system-x86_64 \
> -M pc,nvdimm=on \
> -m 1024,maxmem=$((4096 * 1024 * 1024)),slots=2 \
> -objec
On Tue, Oct 18, 2016 at 03:55:11PM -0600, Logan Gunthorpe wrote:
> An iopmem device is one which exposes volatile or non-volatile memory mapped
> directly to a BAR region. One purpose is to provide buffers to do peer
> to peer transfers on the bus. As such this device uses QEMU's drive
> backing st
