linux-kernel - Re: [RFC PATCH 00/13][V3] kexec: A new system call to allow in kernel loading

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Message-ID: <CAHO5Pa0dxpq7YNe5eUMPE9Mn5m7XCnB1C5mZxrvt2-OqOpVZAA@mail.gmail.com>
Date:	Wed, 4 Jun 2014 21:39:10 +0200
From:	Michael Kerrisk <mtk.manpages@...il.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	WANG Chao <chaowang@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	kexec@...ts.infradead.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"H. Peter Anvin" <hpa@...or.com>, mjg59@...f.ucam.org,
	Greg Kroah-Hartman <greg@...ah.com>,
	Borislav Petkov <bp@...en8.de>, Jiri Kosina <jkosina@...e.cz>,
	dyoung@...hat.com, bhe@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux API <linux-api@...r.kernel.org>,
	Michael Kerrisk-manpages <mtk.manpages@...il.com>
Subject: Re: [RFC PATCH 00/13][V3] kexec: A new system call to allow in kernel loading

Vivek,

As per Documentation/SubmitChecklist , please CC linux-api@ on patces
that change the ABI/API. See
https://www.kernel.org/doc/man-pages/linux-api-ml.html.

Also, is there some draft man page for this new system call?

Thanks,

Michael

On Wed, Jun 4, 2014 at 7:50 PM, Vivek Goyal <vgoyal@...hat.com> wrote:
> On Wed, Jun 04, 2014 at 05:22:14PM +0800, WANG Chao wrote:
>
> [..]
>> > Index: kexec-tools/kexec/kexec.h
>> > ===================================================================
>> > --- kexec-tools.orig/kexec/kexec.h  2014-06-02 14:34:16.719774316 -0400
>> > +++ kexec-tools/kexec/kexec.h       2014-06-02 14:34:42.010036325 -0400
>> > @@ -156,6 +156,13 @@ struct kexec_info {
>> >     unsigned long kexec_flags;
>> >     unsigned long backup_src_start;
>> >     unsigned long backup_src_size;
>> > +   /* Set to 1 if we are using kexec2 syscall */
>> > +   unsigned long file_mode :1;
>> > +
>> > +   /* Filled by kernel image processing code */
>> > +   int initrd_fd;
>> > +   char *command_line;
>> > +   int command_line_len;
>> >  };
>> >
>> >  struct arch_map_entry {
>> > @@ -207,6 +214,7 @@ extern int file_types;
>> >  #define OPT_UNLOAD         'u'
>> >  #define OPT_TYPE           't'
>> >  #define OPT_PANIC          'p'
>> > +#define OPT_USE_KEXEC2_SYSCALL     's'
>> >  #define OPT_MEM_MIN             256
>> >  #define OPT_MEM_MAX             257
>> >  #define OPT_REUSE_INITRD   258
>> > @@ -230,6 +238,7 @@ extern int file_types;
>> >     { "mem-min",            1, 0, OPT_MEM_MIN }, \
>> >     { "mem-max",            1, 0, OPT_MEM_MAX }, \
>> >     { "reuseinitrd",        0, 0, OPT_REUSE_INITRD }, \
>> > +   { "use-kexec2-syscall", 0, 0, OPT_USE_KEXEC2_SYSCALL }, \
>> >     { "debug",              0, 0, OPT_DEBUG }, \
>> >
>> >  #define KEXEC_OPT_STR "h?vdfxluet:p"
>>
>> This line,
>> #define KEXEC_OPT_STR "h?vdfxluet:p"
>>
>> should be something like,
>> #define KEXEC_OPT_STR "h?vdfxluet:ps"
>
> Thanks chao. I will fix it.
>
> Thanks
> Vivek
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-- 
Michael Kerrisk Linux man-pages maintainer;
http://www.kernel.org/doc/man-pages/
Author of "The Linux Programming Interface", http://blog.man7.org/
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