From: Borislav Petkov <bp@alien8.de>
To: Jiri Slaby <jslaby@suse.cz>
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
x86@kernel.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org, Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v9 04/28] x86/asm/entry: Annotate THUNKs
Date: Mon, 14 Oct 2019 15:38:43 +0200 [thread overview]
Message-ID: <20191014133843.GC4715@zn.tnic> (raw)
In-Reply-To: <20191011115108.12392-5-jslaby@suse.cz>
On Fri, Oct 11, 2019 at 01:50:44PM +0200, Jiri Slaby wrote:
> Place SYM_*_START_NOALIGN and SYM_*_END around the THUNK macro body.
> Preserve @function by FUNC (64bit) and CODE (32bit). Given it was not
> marked as aligned, use NOALIGN.
Yeah, I guess the NOALIGN is causing some relaxing of alignment because
the symbols all "move up", from looking at the addresses:
before:
$ readelf -a vmlinux | grep -E "\W(trace_hardirqs_o(n|ff)_thunk|lockdep_sys_exit_thunk|___preempt_schedule)"
70007: ffffffff81001c60 28 FUNC GLOBAL DEFAULT 1 trace_hardirqs_off_thunk
78467: ffffffff81001c40 28 FUNC GLOBAL DEFAULT 1 trace_hardirqs_on_thunk
82067: ffffffff81001cc0 24 FUNC GLOBAL DEFAULT 1 ___preempt_schedule_notra
86509: ffffffff81001c80 24 FUNC GLOBAL DEFAULT 1 lockdep_sys_exit_thunk
87594: ffffffff81001ca0 24 FUNC GLOBAL DEFAULT 1 ___preempt_schedule
after:
$ readelf -a vmlinux | grep -E "\W(trace_hardirqs_o(n|ff)_thunk|lockdep_sys_exit_thunk|___preempt_schedule)"
70007: ffffffff81001c50 28 FUNC GLOBAL DEFAULT 1 trace_hardirqs_off_thunk
78467: ffffffff81001c34 28 FUNC GLOBAL DEFAULT 1 trace_hardirqs_on_thunk
82067: ffffffff81001c9c 24 FUNC GLOBAL DEFAULT 1 ___preempt_schedule_notra
86509: ffffffff81001c6c 24 FUNC GLOBAL DEFAULT 1 lockdep_sys_exit_thunk
87594: ffffffff81001c84 24 FUNC GLOBAL DEFAULT 1 ___preempt_schedule
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2019-10-14 13:38 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-11 11:50 [PATCH v9 00/28] New macros for assembler symbols Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 01/28] linkage: Introduce new " Jiri Slaby
2019-10-11 11:50 ` [Xen-devel] " Jiri Slaby
2019-10-11 11:50 ` Jiri Slaby
2019-10-14 9:31 ` Rafael J. Wysocki
2019-10-14 9:31 ` [Xen-devel] " Rafael J. Wysocki
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 02/28] x86/asm/suspend: Use SYM_DATA for data Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 03/28] x86/asm: Annotate relocate_kernel_{32,64}.c Jiri Slaby
2019-10-14 13:15 ` Borislav Petkov
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 04/28] x86/asm/entry: Annotate THUNKs Jiri Slaby
2019-10-14 13:38 ` Borislav Petkov [this message]
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 05/28] x86/asm: Annotate local pseudo-functions Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 06/28] x86/asm/crypto: Annotate local functions Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 07/28] x86/boot: " Jiri Slaby
2019-10-14 14:27 ` Borislav Petkov
2019-10-15 5:43 ` Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 08/28] x86/uaccess: Annotate local function Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 09/28] x86/asm: Annotate aliases Jiri Slaby
2019-10-11 11:50 ` [Xen-devel] " Jiri Slaby
2019-10-11 11:50 ` Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 10/28] x86/asm/entry: Annotate interrupt symbols properly Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 11/28] x86/asm/head: Annotate data appropriately Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 12/28] x86/boot: " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 13/28] um: " Jiri Slaby
2019-10-15 15:37 ` Richard Weinberger
2019-10-18 16:30 ` [tip: x86/asm] x86/um: " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 14/28] xen/pvh: " Jiri Slaby
2019-10-11 11:50 ` [Xen-devel] " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 15/28] x86/asm/purgatory: Start using annotations Jiri Slaby
2019-10-15 17:03 ` Borislav Petkov
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 16/28] x86/asm: Do not annotate functions by GLOBAL Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm: Do not annotate functions with GLOBAL tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 17/28] x86/asm: Use SYM_INNER_LABEL instead of GLOBAL Jiri Slaby
2019-10-15 17:31 ` Borislav Petkov
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 18/28] x86/asm/realmode: Use SYM_DATA_* " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-11 11:50 ` [PATCH v9 19/28] x86/asm: Kill the last GLOBAL user and remove the macro Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm: Remove " tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 20/28] x86/asm: Make some functions local Jiri Slaby
2019-10-11 11:51 ` [Xen-devel] " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 21/28] x86/asm/ftrace: Mark function_hook as function Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
2019-10-18 16:48 ` Steven Rostedt
2019-10-18 16:49 ` Steven Rostedt
2019-10-18 17:13 ` Borislav Petkov
2019-10-18 17:37 ` Steven Rostedt
2019-10-18 19:48 ` Borislav Petkov
2019-10-18 20:31 ` Steven Rostedt
2019-10-19 7:34 ` Borislav Petkov
2019-10-21 14:10 ` [PATCH] x86/ftrace: Get rid of function_hook Borislav Petkov
2019-10-21 14:33 ` Steven Rostedt
2019-10-22 11:38 ` Jiri Slaby
2019-10-22 12:56 ` Borislav Petkov
2019-10-22 12:57 ` [PATCH -v2] " Borislav Petkov
2019-10-25 9:00 ` [tip: x86/asm] " tip-bot2 for Borislav Petkov
2019-10-11 11:51 ` [PATCH v9 22/28] x86_64/asm: Add ENDs to some functions and relabel with SYM_CODE_* Jiri Slaby
2019-10-11 11:51 ` [Xen-devel] " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm/64: " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 23/28] x86_64/asm: Change all ENTRY+END to SYM_CODE_* Jiri Slaby
2019-10-11 11:51 ` [Xen-devel] " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm/64: " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 24/28] x86_64/asm: Change all ENTRY+ENDPROC to SYM_FUNC_* Jiri Slaby
2019-10-11 11:51 ` [Xen-devel] " Jiri Slaby
2019-10-16 7:12 ` Borislav Petkov
2019-10-16 7:12 ` [Xen-devel] " Borislav Petkov
2019-10-16 7:12 ` Borislav Petkov
2019-10-16 7:12 ` Borislav Petkov
2019-10-18 6:56 ` Herbert Xu
2019-10-18 6:56 ` [Xen-devel] " Herbert Xu
2019-10-18 16:30 ` [tip: x86/asm] x86/asm: " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 25/28] x86_32/asm: Add ENDs to some functions and relabel with SYM_CODE_* Jiri Slaby
2019-10-11 11:51 ` [Xen-devel] " Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm/32: " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` [Xen-devel] " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 26/28] x86_32/asm: Change all ENTRY+END to SYM_CODE_* Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm/32: " tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 27/28] x86_32/asm: Change all ENTRY+ENDPROC to SYM_FUNC_* Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] x86/asm/32: " tip-bot2 for Jiri Slaby
2019-10-18 16:30 ` tip-bot2 for Jiri Slaby
2019-10-11 11:51 ` [PATCH v9 28/28] x86/asm: Replace WEAK uses by SYM_INNER_LABEL_ALIGN Jiri Slaby
2019-10-18 16:30 ` [tip: x86/asm] " tip-bot2 for Jiri Slaby
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