lkml.org 
[lkml]   [2018]   [Oct]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH V9 07/21] csky: MMU and page table management
On Tue, Oct 16, 2018 at 5:01 AM Guo Ren <ren_guo@c-sky.com> wrote:
>
> This patch adds files related to memory management and here is our
> memory-layout:
>
> Fixmap : 0xffc02000 – 0xfffff000 (4 MB - 12KB)
> Pkmap : 0xff800000 – 0xffc00000 (4 MB)
> Vmalloc : 0xf0200000 – 0xff000000 (238 MB)
> Lowmem : 0x80000000 – 0xc0000000 (1GB)
>
> abiv1 CPU (CK610) is VIPT cache and it doesn't support highmem.
> abiv2 CPUs are all PIPT cache and they could support highmem.
>
> Lowmem is directly mapped by msa0 & msa1 reg, and we needn't setup
> memory page table for it.
>
> Link:https://lore.kernel.org/lkml/20180518215548.GH17671@n2100.armlinux.org.uk/
> Signed-off-by: Guo Ren <ren_guo@c-sky.com>
> Cc: Christoph Hellwig <hch@infradead.org>
> Cc: Arnd Bergmann <arnd@arndb.de>

Reviewed-by: Arnd Bergmann <arnd@arndb.de>

Christoph had all the useful comments on this one, I just checked that I didn't
spot anything beyond that.

Arnd

\
 
 \ /
  Last update: 2018-10-17 17:08    [W:0.309 / U:12.120 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site