[PATH 0/1] Kexec jump - v2 - the first step to kexec based hibernation

[Eric W. Biederman]

"Huang, Ying" <ying.huang at intel.com> writes:

> On Tue, 2007-07-31 at 11:10 +0200, Pavel Machek wrote:
>> > Index: kexec-tools-1.101/kexec/arch/i386/crashdump-x86.c
>> > ===================================================================
>> > --- kexec-tools-1.101.orig/kexec/arch/i386/crashdump-x86.c 2007-07-08
> 23:00:25.000000000 +0800
>> > +++ kexec-tools-1.101/kexec/arch/i386/crashdump-x86.c 2007-07-14
> 17:06:45.000000000 +0800
>> > @@ -428,6 +428,29 @@
>> >  	return 0;
>> >  }
>> >  
>> > +/* Adds the kexec_backup= command line parameter to command line. */
>> > +static int cmdline_add_backup(char *cmdline, unsigned long addr)
>> > +{
>> > +	int cmdlen, len, align = 1024;
>> > +	char str[30], *ptr;
>> > +
>> > +	/* Passing in kexec_backup=xxxK format. Saves space required
>> > +	 * in cmdline. Ensure 1K alignment*/
>> > +	if (addr%align)
>> > +		return -1;
>> > +	addr = addr/align;
>> > +	ptr = str;
>> > +	strcpy(str, " kexec_backup=");
>> > +	ptr += strlen(str);
>> > +	ultoa(addr, ptr);
>> > +	strcat(str, "K");
>> > +	len = strlen(str);
>> > +	cmdlen = strlen(cmdline) + len;
>> > +	if (cmdlen > (COMMAND_LINE_SIZE - 1))
>> > +		die("Command line overflow\n");
>> > +	strcat(cmdline, str);
>> > +	return 0;
>> > +}
>> 
>> This part did not apply for me -- it seems crashdump related and I did
>> not have that applied. Is it critical?
>
> This is needed for kexec_jump to work properly. Which version of
> kexec-tools do you use? This patch is against 1.101. The kdump patch
> must be applied before this patch is applied.

Please work against the kexec-tools-testing tree, if you can.
All of the outstanding patches should be there.

Eric