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Date: Thu, 31 Mar 2022 14:20:51 +0800
From: 王洪亮 <>
Subject: Re: Re: add loongarch64 port

在 2022/3/29 下午4:26, Arnd Bergmann 写道:
> On Tue, Mar 29, 2022 at 10:12 AM 王洪亮 <> wrote:
>> Hi,
>> we have published 0001-add-loongarch64-port-v2.patch in
>> The patch v2 fixed the issues pointed out in v1.
>> have any other issues to modify?
> I see you still refer to the system calls that I asked to be removed from
> the kernel: clone() and the old stat() family (pre-statx). Please use
> only the system calls that are actually supported in mainline kernels,
> otherwise it does not work.
Hi,  Arnd

I understand the new system call is clone3() ?

I found musl does not support the clone3() call now, I can implement the

clone3() in LoongArch for future called.

I do not understand what is old stat() family (pre-statx) ?  what is new ?

I compare the system call  that related the stat  in musl and mainline 
kernel 5.17,

they are consistent.

#define __NR3264_statfs     43            /*sys_statfs*/
#define __NR3264_fstatfs    44           /*sys_fstatfs*/
#define __NR3264_fstatat   79          /*sys_newfstatat*/
#define __NR3264_fstat      80            /*sys_newfstat*/
#define __NR_statx             291           /*sys_statx*/
#define __NR_statfs                 __NR3264_statfs
#define __NR_fstatfs               __NR3264_fstatfs
#define __NR_newfstatat      __NR3264_fstatat
#define __NR_fstat                 __NR3264_fstat

> For the signal list, the stdint.h header, and the 'struct stat' and
> 'struct kstat'
> definitions, I would expect that there is already an architecture-independent
> definition in musl that you can use, as these should be the same for
> all new architectures.

I understand the meaning is  define signal.h, stdint.h, struct stat and 
struct kstat in generic,

LoongArch use the generic definition.

can we deal with this issue separately ?

1.LoongArch port based on the existing software framework in musl.

2.implement the generic definitions in musl, LoongArch use the

architecture-independent definition.

Hongliang Wang.

>          Arnd

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