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    SubjectRe: [PATCH] introduce kernel_execve function to replace __KERNEL_SYSCALLS__
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    On Tuesday 22 August 2006 15:39, Jeff Dike wrote:
    > You're contemplating changing UML to do, e.g.
    >         syscall(NR_write, fd, buf, len)
    > instead of the current
    >         write(fd, buf,len)
    > ?
    >
    > That hardly seems like an improvement and it seems fairly unnecessary.
    >
    No, that's not what I was referring to. I was thinking of the calls:

    arch/um/os-Linux/process.c:inline _syscall0(pid_t, getpid)
    arch/um/os-Linux/sys-i386/tls.c:static _syscall1(int, get_thread_area, user_desc_t *, u_info);
    arch/um/os-Linux/tls.c:static _syscall1(int, get_thread_area, user_desc_t *, u_info);
    arch/um/os-Linux/tls.c:static _syscall1(int, set_thread_area, user_desc_t *, u_info);
    arch/um/sys-i386/unmap.c:static inline _syscall2(int,munmap,void *,start,size_t,len)
    arch/um/sys-i386/unmap.c:static inline _syscall6(void *,mmap2,void *,addr,size_t,len,int,prot,int,flags,int,fd,off_t,offset)
    arch/um/sys-x86_64/unmap.c:static inline _syscall2(int,munmap,void *,start,size_t,len)
    arch/um/sys-x86_64/unmap.c:static inline _syscall6(void *,mmap,void *,addr,size_t,len,int,prot,int,flags,int,fd,off_t,offset)

    Are these for calling the host OS or calling the UML kernel?
    If they are for the host, they can be implemented using syscall(),
    otherwise by calling the sys_* functions directly.

    Arnd <><
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