On Wed, Jul 17, 2019 at 5:41 PM Pavel Machek <[email protected]> wrote: > > Hi! > > Commit c0b124054f9e42eb6da545a10fe9122a7d7c3f72 has very nice commit > message, explaining what HMM_MIRROR is and when it is > needed. Unfortunately, it did not make it into Kconfig help: > > CONFIG_HMM_MIRROR: > > Select HMM_MIRROR if you want to mirror range of the CPU page table of > a > process into a device page table. Here, mirror means "keep > synchronized". > Prerequisites: the device must provide the ability to write-protect > its > page tables (at PAGE_SIZE granularity), and must be able to recover > from > the resulting potential page faults. > > Could that be fixed? > > This is key information for me: > > # This is a heterogeneous memory management (HMM) process address space > # mirroring. > # This is useful for NVidia GPU >= Pascal, Mellanox IB >= mlx5 and more > # hardware in the future. >
That seems like a reasonable request Balbir > Thanks, > Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) > http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
