[PATCH] um: implement arch_sync_kernel_mappings

[Johannes Berg]

On Tue, 2021-03-16 at 09:58 +0000, anton.ivanov at cambridgegreys.com
wrote:
> From: Anton Ivanov <anton.ivanov at cambridgegreys.com>
> 
> This improves the tlb flushing behavior by syncing modified
> ranges out of map_kernel_range_noflush in a way which is
> similar to x86.

So I take it this replaces my patch?

Want me to test it (without the kvmalloc)?

johannes