search for: nd_region

This patch adds functionality to perform flush from guest to host over VIRTIO. We are registering a callback based on 'nd_region' type. virtio_pmem driver requires this special flush function. For rest of the region types we are registering existing flush function. Report error returned by host fsync failure to userspace. Signed-off-by: Pankaj Gupta <pagupta at redhat.com> --- drivers/acpi/nfit/core.c | 4 ++...

This patch adds functionality to perform flush from guest to host over VIRTIO. We are registering a callback based on 'nd_region' type. virtio_pmem driver requires this special flush function. For rest of the region types we are registering existing flush function. Report error returned by host fsync failure to userspace. This also handles asynchronous flush requests from the block layer by creating a child bio and chai...

On Tue, Apr 9, 2019 at 9:09 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch adds functionality to perform flush from guest > to host over VIRTIO. We are registering a callback based > on 'nd_region' type. virtio_pmem driver requires this special > flush function. For rest of the region types we are registering > existing flush function. Report error returned by host fsync > failure to userspace. > > This also handles asynchronous flush requests from the block layer > by...

On Tue, Apr 9, 2019 at 9:09 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch adds functionality to perform flush from guest > to host over VIRTIO. We are registering a callback based > on 'nd_region' type. virtio_pmem driver requires this special > flush function. For rest of the region types we are registering > existing flush function. Report error returned by host fsync > failure to userspace. > > This also handles asynchronous flush requests from the block layer > by...

On Thu, Apr 11, 2019 at 9:02 AM Pankaj Gupta <pagupta at redhat.com> wrote: > > > > > > > > > This patch adds functionality to perform flush from guest > > > to host over VIRTIO. We are registering a callback based > > > on 'nd_region' type. virtio_pmem driver requires this special > > > flush function. For rest of the region types we are registering > > > existing flush function. Report error returned by host fsync > > > failure to userspace. > > > > > > This also handles asynchr...

> > > > This patch adds functionality to perform flush from guest > > to host over VIRTIO. We are registering a callback based > > on 'nd_region' type. virtio_pmem driver requires this special > > flush function. For rest of the region types we are registering > > existing flush function. Report error returned by host fsync > > failure to userspace. > > > > This also handles asynchronous flush requests from...

...@ void host_ack(struct virtqueue *vq) > } > spin_unlock_irqrestore(&vpmem->pmem_lock, flags); > } > -EXPORT_SYMBOL_GPL(host_ack); > +EXPORT_SYMBOL_GPL(virtio_pmem_host_ack); > > /* The request submission function */ > -int virtio_pmem_flush(struct nd_region *nd_region) > +static int virtio_pmem_flush(struct nd_region *nd_region) > { > struct virtio_device *vdev = nd_region->provider_data; > struct virtio_pmem *vpmem = vdev->priv; > @@ -69,7 +69,7 @@ int virtio_pmem_flush(struct nd_region *nd_region) >...

...ot;sync" parameter in nvdimm_flush function - Use indirect call for nvdimm_flush - Don?t move declarations to common global header e.g nd.h - nvdimm_flush() return 0 or -EIO if it fails - Teach nsio_rw_bytes() that the flush can fail - Rename nvdimm_flush() to generic_nvdimm_flush() - Use 'nd_region->provider_data' for long dereferencing - Remove virtio_pmem_freeze/restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Changes from RFC v3 - Rebase to latest upstream - Luiz - Call ndregion-&...

...notifier but without scrubbing(no ACPI/ARS)? Need inputs to confirm if this behaviour is ok or needs any change? Changes from PATCH v5: [1] Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...ariable declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...ariable declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...ot;sync" parameter in nvdimm_flush function - Use indirect call for nvdimm_flush - Don?t move declarations to common global header e.g nd.h - nvdimm_flush() return 0 or -EIO if it fails - Teach nsio_rw_bytes() that the flush can fail - Rename nvdimm_flush() to generic_nvdimm_flush() - Use 'nd_region->provider_data' for long dereferencing - Remove virtio_pmem_freeze/restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Changes from RFC v3 - Rebase to latest upstream - Luiz - Call ndregion-&...

...ariable declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...able declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: [2] Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...ariable declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...ariable declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

...ariable declaration indentation in patch 6 [Darrick] - Add Reviewed-by tag by 'Jan Kara' in patch 4 & patch 5 Changes from PATCH v5: Changes suggested in by - [Cornelia, Yuval] - Remove assignment chaining in virtio driver - Better error message and remove not required free - Check nd_region before use Changes suggested by - [Jan Kara] - dax_synchronous() for !CONFIG_DAX - Correct 'daxdev_mapping_supported' comment and non-dax implementation Changes suggested by - [Dan Williams] - Pass meaningful flag 'DAXDEV_F_SYNC' to alloc_dax - Gate nvdimm_flush instead of add...

On Tue, 11 Jun 2019 22:07:57 +0530 Pankaj Gupta <pagupta at redhat.com> wrote: > This patch adds virtio-pmem driver for KVM guest. > > Guest reads the persistent memory range information from > Qemu over VIRTIO and registers it on nvdimm_bus. It also > creates a nd_region object with the persistent memory > range information so that existing 'nvdimm/pmem' driver > can reserve this into system memory map. This way > 'virtio-pmem' driver uses existing functionality of pmem > driver to register persistent memory compatible for DAX > capab...

On Tue, 11 Jun 2019 22:07:57 +0530 Pankaj Gupta <pagupta at redhat.com> wrote: > This patch adds virtio-pmem driver for KVM guest. > > Guest reads the persistent memory range information from > Qemu over VIRTIO and registers it on nvdimm_bus. It also > creates a nd_region object with the persistent memory > range information so that existing 'nvdimm/pmem' driver > can reserve this into system memory map. This way > 'virtio-pmem' driver uses existing functionality of pmem > driver to register persistent memory compatible for DAX > capab...

On Tue, May 14, 2019 at 7:55 AM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch adds functionality to perform flush from guest > to host over VIRTIO. We are registering a callback based > on 'nd_region' type. virtio_pmem driver requires this special > flush function. For rest of the region types we are registering > existing flush function. Report error returned by host fsync > failure to userspace. > > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > --- > dr...