On Tue, 2022-11-08 at 12:37 +0000, Avri Altman wrote: > Hi, > > > In UFS 4.0, it introduced advanced RPMB, which can significantly > > improve > > RPMB's command performance, enhancing its atomic operation. We > > don't > > know which implementation will please everyone, mark this advanced > > RPMB > > patch as RFC. Any suggestions to make the patch a master patch are > > welcome. > > Based on suggestions and feedback from Hannes Reinecke and Bart, we > > can > > use job_bsg->request and job_bsg->reply to pass EHS packets without > > changing > > the BSG V4 structure and BSG core. > > Can you share the reference to this mail thread, or was it a privet > discussion? > > > > Thanks, > > Avri Avri, Yes, this is a private discussion during this year's Storage Summit wit h Hannes Reinecke on the first two proposals below, and a private discussion with Bart on the following three proposals 1. Use current BSG v4, and transmit EHS in sense_buffer, which is rejected. 2. The optional suggestion is to use ufs_bsg, which is the patch. 3. New RPMB framework, but we should enable UFS/eMMC RPMB driver as well in ufs/emmc core, also, the command will be passed to kernel over ioctl(). interested in this one, But Bart suggested using io_uing framework. Since RPMB operation is atomic required, we found it is not safe to use io_uring now, this need passthorugh support SCSI layer as well. Kind regards, Bean
