lkml.org 
[lkml]   [2023]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] tee: add FOLL_LONGTERM for CMA case when alloc shm
On Wed, May 17, 2023 at 01:22:51PM +0530, Sumit Garg wrote:
> > > +#if IS_ENABLED(CONFIG_CMA)
> > > + page_flag |= FOLL_LONGTERM;
> > > +#endif
> > > if (flags & TEE_SHM_USER_MAPPED)
> >
> > If this mapping is long live it should always use FOLL_LONGTERM.
>
> It depends on the userspace application needs. However, I think it
> should be safe to use FOLL_LONGTERM by default to serve cases like
> secure media playback.

long term is defined as won't automatically go away during the same
syscall.

\
 
 \ /
  Last update: 2023-05-17 10:09    [W:0.073 / U:0.964 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site