Re: ARM: static kernel in vmalloc space

afzal mohammed
2020-05-14T14:44:26Z

Hi,

On Thu, May 14, 2020 at 07:05:45PM +0530, afzal mohammed wrote:

> So if we make VMSPLIT_4G_4G, depends on !HIGH_MEMORY (w/ mention of
> caveat in Kconfig help that this is meant for platforms w/ <=4GB), then
> we can do copy_{from,to}_user the same way currently do, and no need to
> do the user page pinning & kmap, right ?

i think user page pinning is still required, but kmap can be avoided
by using lowmem corresponding to that page, right ?, or am i
completely wrong ?

Regards
afzal