lkml.org 
[lkml]   [2021]   [Jul]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 2/4] riscv: __asm_copy_to-from_user: Fix: fail on RV32
From
Date
Hi Geert,

On 7/20/2021 6:49 PM, Geert Uytterhoeven wrote:
> Hi Tsukamoto-san,
>
> Thanks for your patch!
>
> On Tue, Jul 20, 2021 at 10:51 AM Akira Tsukamoto
> <akira.tsukamoto@gmail.com> wrote:
>> Had a bug when converting bytes to bits when the cpu was rv32.
>>
>> The a3 contains the number of bytes and multiple of 8
>> would be the bits. The LGREG is holding 2 for RV32 and 3 for
>> RV32, so to achieve multiple of 8 it must always be constant 3.
>
> RV64

Thanks, the LGREG is holding 2 for RV32 and 3 for RV64 (not RV32).

Akira

\
 
 \ /
  Last update: 2021-07-20 12:21    [W:1.711 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site