Re: [Qemu-devel] [PATCH v3 0/5] kvm "virtio pmem" device

2019-01-16 Thread Jan Kara
On Sat 12-01-19 21:17:46, Pankaj Gupta wrote: > > > > Right. Thinking about this I would be more concerned about the fact that > > > > guest can effectively pin amount of host's page cache upto size of the > > > > device/file passed to guest as PMEM, can't it Pankaj? Or is there some > > > > QEMU

Re: [Qemu-devel] [PATCH v3 0/5] kvm "virtio pmem" device

2019-01-16 Thread Pankaj Gupta
> > > > > Right. Thinking about this I would be more concerned about the fact > > > > > that > > > > > guest can effectively pin amount of host's page cache upto size of > > > > > the > > > > > device/file passed to guest as PMEM, can't it Pankaj? Or is there > > > > > some > > > > > QEMU > > >

Re: [Qemu-devel] [PATCH v3 0/5] kvm "virtio pmem" device

2019-01-16 Thread Pankaj Gupta
> > > > > > > > > > > > On Thu 10-01-19 12:26:17, Dave Chinner wrote: > > > > On Wed, Jan 09, 2019 at 08:17:31PM +0530, Pankaj Gupta wrote: > > > > > This patch series has implementation for "virtio pmem". > > > > > "virtio pmem" is fake persistent memory(nvdimm) in guest > > > > > which

Re: [Qemu-devel] [PATCH v3 0/5] kvm "virtio pmem" device

2019-01-16 Thread Pankaj Gupta
> > > > > > > > On Mon, Jan 14, 2019 at 02:15:40AM -0500, Pankaj Gupta wrote: > > > > > > > > > > > > Until you have images (and hence host page cache) shared between > > > > > > > multiple guests. People will want to do this, because it means > > > > > > > they > > > > > > > only need a single

Re: [Qemu-devel] [PATCH v3 0/5] kvm "virtio pmem" device

2019-01-09 Thread Pankaj Gupta
Please ignore this series as my network went down while sending this. I will send this series again. Thanks, Pankaj > > This patch series has implementation for "virtio pmem". > "virtio pmem" is fake persistent memory(nvdimm) in guest > which allows to bypass the guest page cache. This