All of lore.kernel.org
 help / color / mirror / Atom feed
From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Jiri Kosina <jkosina@suse.cz>
Cc: Seth Jennings <sjenning@redhat.com>,
	Vojtech Pavlik <vojtech@suse.cz>,
	Steven Rostedt <rostedt@goodmis.org>,
	Petr Mladek <pmladek@suse.cz>, Miroslav Benes <mbenes@suse.cz>,
	Christoph Hellwig <hch@infradead.org>,
	Greg KH <gregkh@linuxfoundation.org>,
	Andy Lutomirski <luto@amacapital.net>,
	Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
	live-patching@vger.kernel.org, x86@kernel.org, kpatch@redhat.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCHv3 2/3] kernel: add support for live patching
Date: Fri, 21 Nov 2014 09:35:35 -0600	[thread overview]
Message-ID: <20141121153535.GC26264@treble.redhat.com> (raw)
In-Reply-To: <alpine.LNX.2.00.1411211626110.23174@pobox.suse.cz>

On Fri, Nov 21, 2014 at 04:27:57PM +0100, Jiri Kosina wrote:
> On Fri, 21 Nov 2014, Josh Poimboeuf wrote:
> 
> > I think we can use "depends on HAVE_FENTRY" to accomplish this, since 
> > CC_USING_FENTRY gets set by the top level kernel Makefile if 
> > CONFIG_HAVE_FENTRY is set.
> 
> The problem is that HAVE_FENTRY is set automatically on x86_64, no matter 
> whether your actual compiler supports it or not.
> 
> CC_USING_FENTRY is defined if and only if the actual currently used 
> compiler supports it, but that can't be expressed in Kconfig.

Ah, light bulb moment.  Now I understand what "$(call cc-option, ...)"
does.

Thanks :-)

-- 
Josh

  reply	other threads:[~2014-11-21 15:36 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-20 22:29 [PATCHv3 0/3] Kernel Live Patching Seth Jennings
2014-11-20 22:29 ` [PATCHv3 1/3] kernel: add TAINT_LIVEPATCH Seth Jennings
2014-11-20 22:29 ` [PATCHv3 2/3] kernel: add support for live patching Seth Jennings
2014-11-21  0:22   ` Jiri Kosina
2014-11-21 14:44     ` Miroslav Benes
2014-11-21 15:00       ` Josh Poimboeuf
2014-11-21 15:46         ` Miroslav Benes
2014-11-21 16:13           ` Seth Jennings
2014-11-21 15:21     ` Josh Poimboeuf
2014-11-21 15:27       ` Jiri Kosina
2014-11-21 15:35         ` Josh Poimboeuf [this message]
2014-11-21 16:40     ` Seth Jennings
2014-11-21 17:35       ` Jiri Slaby
2014-11-21 18:29         ` Seth Jennings
2014-11-21 17:53       ` Andy Lutomirski
2014-11-21  2:39   ` Masami Hiramatsu
2014-11-25 16:39     ` Petr Mladek
2014-11-25 16:52       ` Steven Rostedt
2014-11-25 17:04         ` Petr Mladek
2014-11-25 17:16           ` Steven Rostedt
2014-11-25 19:29             ` Jiri Kosina
2014-12-03  8:09               ` Masami Hiramatsu
2014-11-24 11:13   ` Thomas Gleixner
2014-11-24 13:21     ` Jiri Kosina
2014-11-24 13:26       ` Thomas Gleixner
2014-11-24 13:31         ` Vojtech Pavlik
2014-11-24 14:25           ` Masami Hiramatsu
2014-11-24 13:31         ` Jiri Kosina
2014-11-24 13:23     ` Vojtech Pavlik
2014-11-24 13:24     ` Josh Poimboeuf
2014-11-24 13:27     ` Masami Hiramatsu
2014-11-20 22:29 ` [PATCHv3 3/3] kernel: add sysfs documentation " Seth Jennings
2014-11-21  2:49   ` Masami Hiramatsu
2014-11-21 16:41     ` Seth Jennings
2014-11-21  2:44 ` [PATCHv3 0/3] Kernel Live Patching Masami Hiramatsu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20141121153535.GC26264@treble.redhat.com \
    --to=jpoimboe@redhat.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=hch@infradead.org \
    --cc=jkosina@suse.cz \
    --cc=kpatch@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=live-patching@vger.kernel.org \
    --cc=luto@amacapital.net \
    --cc=masami.hiramatsu.pt@hitachi.com \
    --cc=mbenes@suse.cz \
    --cc=pmladek@suse.cz \
    --cc=rostedt@goodmis.org \
    --cc=sjenning@redhat.com \
    --cc=vojtech@suse.cz \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.