On Thu, Jan 31, 2019 at 6:04 PM Heiko Stuebner [off-list ref] wrote:

Am Donnerstag, 31. Januar 2019, 13:31:52 CET schrieb Souptick Joarder:

quoted

On Thu, Jan 31, 2019 at 5:37 PM Heiko Stuebner [off-list ref] wrote:

quoted

Am Donnerstag, 31. Januar 2019, 04:08:12 CET schrieb Souptick Joarder:

quoted

Previouly drivers have their own way of mapping range of
kernel pages/memory into user vma and this was done by
invoking vm_insert_page() within a loop.

As this pattern is common across different drivers, it can
be generalized by creating new functions and use it across
the drivers.

vm_insert_range() is the API which could be used to mapped
kernel memory/pages in drivers which has considered vm_pgoff

vm_insert_range_buggy() is the API which could be used to map
range of kernel memory/pages in drivers which has not considered
vm_pgoff. vm_pgoff is passed default as 0 for those drivers.

We _could_ then at a later "fix" these drivers which are using
vm_insert_range_buggy() to behave according to the normal vm_pgoff
offsetting simply by removing the _buggy suffix on the function
name and if that causes regressions, it gives us an easy way to revert.

Signed-off-by: Souptick Joarder <redacted>
Suggested-by: Russell King <linux@armlinux.org.uk>
Suggested-by: Matthew Wilcox <willy@infradead.org>

hmm, I'm missing a changelog here between v1 and v2.
Nevertheless I managed to test v1 on Rockchip hardware
and display is still working, including talking to Lima via prime.

So if there aren't any big changes for v2, on Rockchip
Tested-by: Heiko Stuebner <heiko@sntech.de>

Change log is available in [0/9].
Patch [1/9] & [4/9] have no changes between v1 -> v2.

I never seem to get your cover-letters, so didn't see that, sorry.

I added you in sender list for all cover-letters but it didn't reach
your inbox :-)
Thanks for reviewing and validating the patch.

But great that there weren't changes then :-)

Heiko

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel