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From: Andi Kleen <ak@linux.intel.com>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>,
	x86@kernel.org, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 11/17] x86/kprobes: Make trampoline_handler global and visible
Date: Sat, 23 Mar 2019 07:35:18 -0700	[thread overview]
Message-ID: <20190323143518.GB18020@tassilo.jf.intel.com> (raw)
In-Reply-To: <20190323184521.a443cc741997cb0d3ed26395@kernel.org>

On Sat, Mar 23, 2019 at 06:45:21PM +0900, Masami Hiramatsu wrote:
> On Thu, 21 Mar 2019 15:00:03 -0700
> Andi Kleen <andi@firstfloor.org> wrote:
> 
> > From: Andi Kleen <ak@linux.intel.com>
> > 
> > This function is referenced from assembler, so in LTO
> > it needs to be global and visible to not be optimized away.
> > 
> 
> I got it.
> 
> Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
> 
> Andi, out of curiousity, that is not only for x86, but
> does all arch have to care it?

Yes all architectures need it for LTO, but I currently
only test x86. There are some other people who made it work
on ARM / MIPS / PowerPC before.

-Andi

  reply	other threads:[~2019-03-23 14:35 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-21 21:59 Fixes and cleanup from LTO tree Andi Kleen
2019-03-21 21:59 ` [PATCH 01/17] kbuild: Disable -Waddress-of-packed-member for gcc 9 Andi Kleen
2019-03-22 13:58   ` Arnd Bergmann
2019-03-22 16:31     ` Andi Kleen
2019-03-22 16:39     ` Peter Zijlstra
2019-03-22 16:57       ` Arnd Bergmann
2019-03-22 16:58       ` Andi Kleen
2019-03-25 16:27         ` David Laight
2019-04-01  1:04     ` Masahiro Yamada
2019-03-21 21:59 ` [PATCH 02/17] x86, lto: Mark all top level asm statements as .text Andi Kleen
2019-03-26 17:03   ` Thomas Gleixner
2019-03-26 21:38     ` Andi Kleen
2019-03-26 22:25       ` Thomas Gleixner
2019-03-27  0:55         ` Andi Kleen
2019-03-27  1:08           ` Andi Kleen
2019-03-27 14:20           ` Thomas Gleixner
2019-03-27 14:39             ` Ingo Molnar
2019-03-27 14:59             ` Andi Kleen
2019-03-27 15:08               ` Thomas Gleixner
2019-03-27 15:45                 ` Andi Kleen
2019-03-27 19:08                   ` Thomas Gleixner
2019-03-27 20:40                     ` Andi Kleen
2019-03-27 21:55                       ` Thomas Gleixner
2019-03-27 22:29                         ` Andi Kleen
2019-03-27 22:50                           ` Thomas Gleixner
2019-04-02  8:54                             ` Thomas Gleixner
2019-03-21 21:59 ` [PATCH 03/17] x86: Don't inline __const_udelay Andi Kleen
2019-03-21 21:59 ` [PATCH 04/17] init: Add __noreorder and mark initcalls __noreorder Andi Kleen
2019-03-21 21:59 ` [PATCH 05/17] Use C version for SYSCALL_ALIAS Andi Kleen
2019-03-21 21:59 ` [PATCH 06/17] locking/core: Mark spinlocks noinline when inline spinlocks are disabled Andi Kleen
2019-03-21 21:59 ` [PATCH 07/17] amdkfd: Fix extern declaration Andi Kleen
2019-03-21 22:00 ` [PATCH 08/17] x86/speculation: Fix __initconst in bugs.c Andi Kleen
2019-03-26 17:24   ` Thomas Gleixner
2019-03-21 22:00 ` [PATCH 09/17] x86/kvm: Make steal_time visible Andi Kleen
2019-03-21 22:00 ` [PATCH 10/17] delta: Fix buffer overrun in delta_ipc_open Andi Kleen
2019-04-01 13:37   ` Hugues FRUCHET
2019-04-01 16:54     ` Andi Kleen
2019-04-02  9:56       ` Hugues FRUCHET
2019-03-21 22:00 ` [PATCH 11/17] x86/kprobes: Make trampoline_handler global and visible Andi Kleen
2019-03-23  9:45   ` Masami Hiramatsu
2019-03-23 14:35     ` Andi Kleen [this message]
2019-03-25  1:53       ` Masami Hiramatsu
2019-03-21 22:00 ` [PATCH 12/17] afs: Avoid section confusion in CM_NAME Andi Kleen
2019-03-21 22:00 ` [PATCH 13/17] ASoC: AMD: Fix incorrect extern Andi Kleen
2019-03-21 22:00 ` [PATCH 14/17] crypto: Don't mark AES tables const and cacheline_aligned Andi Kleen
2019-03-26  8:42   ` Rasmus Villemoes
2019-03-26 18:30     ` Andi Kleen
2019-03-21 22:00 ` [PATCH 15/17] x86/hyperv: Make hv_vcpu_is_preempted visible Andi Kleen
2019-03-26  8:15   ` Yi Sun
2019-03-21 22:00 ` [PATCH 16/17] x86/xen: Mark xen_vcpu_stolen as __visible Andi Kleen
2019-03-21 22:00 ` [PATCH 17/17] dm: Fix const confusion in dm Andi Kleen
2019-03-22  8:34 ` [PATCH 12/17] afs: Avoid section confusion in CM_NAME David Howells
2019-03-26 17:00 ` Fixes and cleanup from LTO tree Thomas Gleixner

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