[PATCH 3/3] mips: remove register spill

[Adhemerval Zanella]

On 01/12/2020 06:39, Huang Pei wrote:
> hi,
> 
> On Mon, Nov 30, 2020 at 11:22:03AM -0300, Adhemerval Zanella wrote:
>>
>>
>> On 28/11/2020 05:18, Huang Pei wrote:
>>> Before Linux/MIPS 2.6.36, kernel expected setting syscall number(aka
>>> "li v0, #sys_number") right precedes "syscall", so the kernel syscall
>>> restart sequence can use CP0 EPC - 4 to restart the syscall, because
>>> kernel DID NOT save v0 during syscall handling. Linux 2.6.36 canceled
>>> this restriction.
>>>
>>> See sysdeps/unix/sysv/linux/mips/{mips32/sysdep.h,mips64/sysdep.h,sysdep.h}
>>>
>>> Since glibc-2.24 the minimum kernel version is 3.2(much higer than
>>> 2.6.36), I think it is OK to remove the ugly register spill in
>>> syscall.S just because of the old convention
>>>
>>> Signed-off-by: Huang Pei <huangpei@loongson.cn>
>>
>> We do not use SCO, but rather Copyright assignment.	
>>
>> The rest of the patch looks ok.
>>
> 
> I would like to combine the Patch 2/3 and Patch 3/3 into one patch,
> since Patch 2/3 only fix sp alignment, but the key point is folllowing syscall
> restart convention, any advice?

Send a v2 with the patches merged and the hp-inline fix.