On Thu, Jan 04, 2018 at 09:23:28AM +0800, Haozhong Zhang wrote:
> On 01/03/18 11:45 -0200, Eduardo Habkost wrote:
> > On Wed, Jan 03, 2018 at 11:16:39AM +0800, Haozhong Zhang wrote:
> > > On 01/02/18 18:02 +0200, Michael S. Tsirkin wrote:
> > > > On Wed, Dec 27, 2017 at 02:56:20PM +0800, Haozhong Z
On 01/03/18 11:45 -0200, Eduardo Habkost wrote:
> On Wed, Jan 03, 2018 at 11:16:39AM +0800, Haozhong Zhang wrote:
> > On 01/02/18 18:02 +0200, Michael S. Tsirkin wrote:
> > > On Wed, Dec 27, 2017 at 02:56:20PM +0800, Haozhong Zhang wrote:
> > > > When a file supporting DAX is used as vNVDIMM backen
On Wed, Jan 03, 2018 at 11:16:39AM +0800, Haozhong Zhang wrote:
> On 01/02/18 18:02 +0200, Michael S. Tsirkin wrote:
> > On Wed, Dec 27, 2017 at 02:56:20PM +0800, Haozhong Zhang wrote:
> > > When a file supporting DAX is used as vNVDIMM backend, mmap it with
> > > MAP_SYNC flag in addition can guar
On 01/02/18 18:02 +0200, Michael S. Tsirkin wrote:
> On Wed, Dec 27, 2017 at 02:56:20PM +0800, Haozhong Zhang wrote:
> > When a file supporting DAX is used as vNVDIMM backend, mmap it with
> > MAP_SYNC flag in addition can guarantee the persistence of guest write
> > to the backend file without oth
On Wed, Dec 27, 2017 at 02:56:20PM +0800, Haozhong Zhang wrote:
> When a file supporting DAX is used as vNVDIMM backend, mmap it with
> MAP_SYNC flag in addition can guarantee the persistence of guest write
> to the backend file without other QEMU actions (e.g., periodic fsync()
> by QEMU).
>
> By
When a file supporting DAX is used as vNVDIMM backend, mmap it with
MAP_SYNC flag in addition can guarantee the persistence of guest write
to the backend file without other QEMU actions (e.g., periodic fsync()
by QEMU).
By using MAP_SHARED_VALIDATE flag with MAP_SYNC, we can ensure mmap
with MAP_S
