Re: [Qemu-devel] [PATCH] nvme: support NVME_VOLATILE_WRITE_CACHE feature

2015-05-07 Thread Kevin Wolf
[ Cc: qemu-block ] Am 30.04.2015 um 16:03 hat Keith Busch geschrieben: > On Thu, 30 Apr 2015, Christoph Hellwig wrote: > >The SCSI emulation in the Linux NVMe driver really wants to know > >if a device has a volatile write cache. Given that qemu has moved > >away from a model where we report the

Re: [Qemu-devel] [PATCH] nvme: support NVME_VOLATILE_WRITE_CACHE feature

2015-04-30 Thread Keith Busch
On Thu, 30 Apr 2015, Christoph Hellwig wrote: The SCSI emulation in the Linux NVMe driver really wants to know if a device has a volatile write cache. Given that qemu has moved away from a model where we report the backing store WCE bit to one where the WCE bit is supposed to be part of the migr

[Qemu-devel] [PATCH] nvme: support NVME_VOLATILE_WRITE_CACHE feature

2015-04-30 Thread Christoph Hellwig
The SCSI emulation in the Linux NVMe driver really wants to know if a device has a volatile write cache. Given that qemu has moved away from a model where we report the backing store WCE bit to one where the WCE bit is supposed to be part of the migratable guest-visible state we always return 1 he