| Date | Thu, 5 Jun 2014 11:01:59 -0400 | From | Vivek Goyal <> | Subject | Re: [RFC PATCH 00/13][V3] kexec: A new system call to allow in kernel loading |
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On Thu, Jun 05, 2014 at 04:31:34PM +0800, Dave Young wrote:
[..] > > + ret = kexec_file_load(kernel_fd, info.initrd_fd, info.command_line, > > + info.command_line_len, info.kexec_flags); > > Vivek, > > I tried your patch on my uefi test machine, but kexec load fails like below: > > [root@localhost ~]# kexec -l /boot/vmlinuz-3.15.0-rc8+ --use-kexec2-syscall > Could not find a free area of memory of 0xa000 bytes ...
Hi Dave,
I think this message is coming from kexec-tools from old loading path. I think somehow new path did not even kick in. I tried above and I got -EBADF as I did not pass initrd. Can you run gdb on kexec and see if you are getting to syscall or run strace.
> > Another issue is that the syscall should allow load kernel only without initrd
Agreed. Currently my code is not handling it. I am thinking of ways how to make passing initrd fd optional.
> > and > cmdline since kernel can mount root and embed cmdline in itself.
Passing command line is already optional. I tried it and kexec loaded successfully.
Thanks Vivek
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