[RFC 3/3] kexec: extend kexec_file_load system call

Vivek Goyal vgoyal at redhat.com
Fri Jul 15 06:09:55 PDT 2016

On Tue, Jul 12, 2016 at 10:42:01AM +0900, AKASHI Takahiro wrote:

> -SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd,
> +SYSCALL_DEFINE6(kexec_file_load, int, kernel_fd, int, initrd_fd,
>  		unsigned long, cmdline_len, const char __user *, cmdline_ptr,
> -		unsigned long, flags)
> +		unsigned long, flags, const struct kexec_fdset __user *, ufdset)

Can one add more parameters to existing syscall. Can it break existing
programs with new kernel? I was of the impression that one can't do that.
But may be I am missing something.


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