All of lore.kernel.org
 help / color / mirror / Atom feed
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
Subject: Re: [PATCH v8 03/28] x86/asm: annotate relocate_kernel
Date: Thu, 15 Aug 2019 10:37:37 +0200	[thread overview]
Message-ID: <20190815083737.GD15313@zn.tnic> (raw)
In-Reply-To: <20190808103854.6192-4-jslaby@suse.cz>

On Thu, Aug 08, 2019 at 12:38:29PM +0200, Jiri Slaby wrote:
> There are functions in relocate_kernel which are not annotated. This
					^
					_{32,64}.c

> makes automatic annotations rather hard. So annotate all the functions
> now.
> 
> Note that these are not C-like functions, so we do not use FUNC, but
> CODE markers. Also they are not aligned, so we use the NOALIGN versions:
> - SYM_CODE_START_NOALIGN
> - SYM_CODE_START_LOCAL_NOALIGN
> - SYM_CODE_END
> 
> In return, we get:
>   0000   108 NOTYPE  GLOBAL DEFAULT    1 relocate_kernel
>   006c   165 NOTYPE  LOCAL  DEFAULT    1 identity_mapped
>   0146   127 NOTYPE  LOCAL  DEFAULT    1 swap_pages
>   0111    53 NOTYPE  LOCAL  DEFAULT    1 virtual_mapped

It would be cool if those NOTYPE objects could be marked as OS-specific:

From /usr/include/elf.h:

#define STT_LOOS        10              /* Start of OS-specific */

to denote that they're special but gas doesn't seem to support that type
out of the box at least.

Oh well...

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

WARNING: multiple messages have this Message-ID (diff)
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
Subject: Re: [PATCH v8 03/28] x86/asm: annotate relocate_kernel
Date: Thu, 15 Aug 2019 10:37:37 +0200	[thread overview]
Message-ID: <20190815083737.GD15313@zn.tnic> (raw)
Message-ID: <20190815083737.wILuzO9Ratw0E2l9h9Mt2pEZ2JFY1fF9oqbULPryvKU@z> (raw)
In-Reply-To: <20190808103854.6192-4-jslaby@suse.cz>

On Thu, Aug 08, 2019 at 12:38:29PM +0200, Jiri Slaby wrote:
> There are functions in relocate_kernel which are not annotated. This
					^
					_{32,64}.c

> makes automatic annotations rather hard. So annotate all the functions
> now.
> 
> Note that these are not C-like functions, so we do not use FUNC, but
> CODE markers. Also they are not aligned, so we use the NOALIGN versions:
> - SYM_CODE_START_NOALIGN
> - SYM_CODE_START_LOCAL_NOALIGN
> - SYM_CODE_END
> 
> In return, we get:
>   0000   108 NOTYPE  GLOBAL DEFAULT    1 relocate_kernel
>   006c   165 NOTYPE  LOCAL  DEFAULT    1 identity_mapped
>   0146   127 NOTYPE  LOCAL  DEFAULT    1 swap_pages
>   0111    53 NOTYPE  LOCAL  DEFAULT    1 virtual_mapped

It would be cool if those NOTYPE objects could be marked as OS-specific:

  reply	other threads:[~2019-08-15  8:37 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-08 10:38 [PATCH v8 00/28] New macros for assembler symbols Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 01/28] linkage: new " Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-12 17:06   ` Borislav Petkov
2019-08-12 17:06     ` [Xen-devel] " Borislav Petkov
2019-08-29 10:48     ` Jiri Slaby
2019-08-29 10:48       ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 02/28] x86/asm/suspend: use SYM_DATA for data Jiri Slaby
2019-08-13 16:40   ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 03/28] x86/asm: annotate relocate_kernel Jiri Slaby
2019-08-15  8:37   ` Borislav Petkov [this message]
2019-08-15  8:37     ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 04/28] x86/asm/entry: annotate THUNKs Jiri Slaby
2019-08-15 12:43   ` Borislav Petkov
2019-09-06  7:43     ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 05/28] x86/asm: annotate local pseudo-functions Jiri Slaby
2019-08-15 16:07   ` Borislav Petkov
2019-08-28 11:47     ` Asm & local labels for functions [was: [PATCH v8 05/28] x86/asm: annotate local pseudo-functions] Jiri Slaby
2019-08-28 12:24       ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 06/28] x86/asm/crypto: annotate local functions Jiri Slaby
2019-08-17  9:17   ` Borislav Petkov
2019-09-05 10:59     ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 07/28] x86/boot/compressed: " Jiri Slaby
2019-08-19 14:44   ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 08/28] x86/uaccess: annotate local function Jiri Slaby
2019-08-19 14:47   ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 09/28] x86/asm: annotate aliases Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38   ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 10/28] x86/asm/entry: annotate interrupt symbols properly Jiri Slaby
2019-08-19 14:56   ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 11/28] x86/asm/head: annotate data appropriatelly Jiri Slaby
2019-08-20 16:24   ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 12/28] x86/boot/compressed: " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 13/28] um: " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 14/28] xen/pvh: " Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38   ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 15/28] x86/asm/purgatory: start using annotations Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 16/28] x86/asm: do not annotate functions by GLOBAL Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 17/28] x86/asm: use SYM_INNER_LABEL instead of GLOBAL Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 18/28] x86/asm/realmode: use SYM_DATA_* " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 19/28] x86/asm: kill the last GLOBAL user and remove the macro Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 20/28] x86/asm: make some functions local Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 21/28] x86/asm/ftrace: mark function_hook as function Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 22/28] x86_64/asm: add ENDs to some functions and relabel with SYM_CODE_* Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 23/28] x86_64/asm: change all ENTRY+END to SYM_CODE_* Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 24/28] x86_64/asm: change all ENTRY+ENDPROC to SYM_FUNC_* Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 25/28] x86_32/asm: add ENDs to some functions and relabel with SYM_CODE_* Jiri Slaby
2019-08-08 10:38   ` [Xen-devel] " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 26/28] x86_32/asm: change all ENTRY+END to SYM_CODE_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 27/28] x86_32/asm: change all ENTRY+ENDPROC to SYM_FUNC_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 28/28] x86/asm: replace WEAK uses by SYM_INNER_LABEL_ALIGN Jiri Slaby

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=20190815083737.GD15313@zn.tnic \
    --to=bp@alien8.de \
    --cc=hpa@zytor.com \
    --cc=jslaby@suse.cz \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=tglx@linutronix.de \
    --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.