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From: Helge Deller <deller@gmx.de>
To: Kees Cook <keescook@chromium.org>, Borislav Petkov <bp@alien8.de>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Andy Lutomirski <luto@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Will Deacon <will@kernel.org>,
	linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org, linux-alpha@vger.kernel.org,
	linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org,
	linux-c6x-dev@linux-c6x.org,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Michal Simek <monstr@monstr.eu>,
	linux-parisc@vger.kernel.org, x86@kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 23/29] parisc: Move EXCEPTION_TABLE to RO_DATA segment
Date: Sat, 12 Oct 2019 11:50:09 +0200
Message-ID: <8b3c27ec-9880-5957-a802-ca740d9ad6c5@gmx.de> (raw)
In-Reply-To: <20191011000609.29728-24-keescook@chromium.org>

On 11.10.19 02:06, Kees Cook wrote:
> Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.
>
> Signed-off-by: Kees Cook <keescook@chromium.org>
> ---
>   arch/parisc/kernel/vmlinux.lds.S | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)


Acked-by: Helge Deller <deller@gmx.de>  # parisc

Helge

>
> diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
> index 12b3d7d5e9e4..53e29d88f99c 100644
> --- a/arch/parisc/kernel/vmlinux.lds.S
> +++ b/arch/parisc/kernel/vmlinux.lds.S
> @@ -19,6 +19,7 @@
>   				*(.data..vm0.pte)
>
>   #define CC_USING_PATCHABLE_FUNCTION_ENTRY
> +#define RO_EXCEPTION_TABLE_ALIGN	8
>
>   #include <asm-generic/vmlinux.lds.h>
>
> @@ -129,9 +130,6 @@ SECTIONS
>
>   	RO_DATA(8)
>
> -	/* RO because of BUILDTIME_EXTABLE_SORT */
> -	EXCEPTION_TABLE(8)
> -
>   	/* unwind info */
>   	.PARISC.unwind : {
>   		__start___unwind = .;
>


  reply index

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-11  0:05 [PATCH v2 00/29] vmlinux.lds.h: Refactor EXCEPTION_TABLE and NOTES Kees Cook
2019-10-11  0:05 ` [PATCH v2 01/29] powerpc: Rename "notes" PT_NOTE to "note" Kees Cook
2019-10-11  6:00   ` Michael Ellerman
2019-10-11  8:25   ` Segher Boessenkool
2019-10-11 16:11     ` Kees Cook
2019-10-11 16:25       ` Segher Boessenkool
2019-10-15 16:54         ` Borislav Petkov
2019-10-15 17:36           ` Kees Cook
2019-10-11  0:05 ` [PATCH v2 02/29] powerpc: Remove PT_NOTE workaround Kees Cook
2019-10-11  6:07   ` Michael Ellerman
2019-10-11 16:09     ` Kees Cook
2019-10-11  0:05 ` [PATCH v2 03/29] powerpc: Rename PT_LOAD identifier "kernel" to "text" Kees Cook
2019-10-11  6:07   ` Michael Ellerman
2019-10-11  0:05 ` [PATCH v2 04/29] alpha: " Kees Cook
2019-10-11  0:05 ` [PATCH v2 05/29] ia64: Rename PT_LOAD identifier "code" " Kees Cook
2019-10-11  0:05 ` [PATCH v2 06/29] s390: Move RO_DATA into "text" PT_LOAD Program Header Kees Cook
2019-10-16  8:25   ` Heiko Carstens
2019-10-11  0:05 ` [PATCH v2 07/29] x86: Restore "text" Program Header with dummy section Kees Cook
2019-10-11  0:05 ` [PATCH v2 08/29] vmlinux.lds.h: Provide EMIT_PT_NOTE to indicate export of .notes Kees Cook
2019-10-11  0:05 ` [PATCH v2 09/29] vmlinux.lds.h: Move Program Header restoration into NOTES macro Kees Cook
2019-10-11  0:05 ` [PATCH v2 10/29] vmlinux.lds.h: Move NOTES into RO_DATA Kees Cook
2019-10-11  0:05 ` [PATCH v2 11/29] vmlinux.lds.h: Replace RODATA with RO_DATA Kees Cook
2019-10-11  0:05 ` [PATCH v2 12/29] vmlinux.lds.h: Replace RO_DATA_SECTION " Kees Cook
2019-10-11  7:49   ` Geert Uytterhoeven
2019-10-11  0:05 ` [PATCH v2 13/29] vmlinux.lds.h: Replace RW_DATA_SECTION with RW_DATA Kees Cook
2019-10-11  7:49   ` Geert Uytterhoeven
2019-10-11  0:05 ` [PATCH v2 14/29] vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA Kees Cook
2019-10-11  0:05 ` [PATCH v2 15/29] x86: Actually use _etext for end of text segment Kees Cook
2019-10-11  0:05 ` [PATCH v2 16/29] x86: Move EXCEPTION_TABLE to RO_DATA segment Kees Cook
2019-10-11  0:05 ` [PATCH v2 17/29] alpha: " Kees Cook
2019-10-11  0:05 ` [PATCH v2 18/29] arm64: " Kees Cook
2019-10-11  0:05 ` [PATCH v2 19/29] c6x: " Kees Cook
2019-10-11  0:06 ` [PATCH v2 20/29] h8300: " Kees Cook
2019-10-11  0:06 ` [PATCH v2 21/29] ia64: " Kees Cook
2019-10-11  0:06 ` [PATCH v2 22/29] microblaze: " Kees Cook
2019-10-11  0:06 ` [PATCH v2 23/29] parisc: " Kees Cook
2019-10-12  9:50   ` Helge Deller [this message]
2019-10-11  0:06 ` [PATCH v2 24/29] powerpc: " Kees Cook
2019-10-11  0:06 ` [PATCH v2 25/29] xtensa: " Kees Cook
2019-10-14  7:41   ` Max Filippov
2019-10-11  0:06 ` [PATCH v2 26/29] x86/mm: Remove redundant &s on addresses Kees Cook
2019-10-11  0:06 ` [PATCH v2 27/29] x86/mm: Report which part of kernel image is freed Kees Cook
2019-10-11  0:06 ` [PATCH v2 28/29] x86/mm: Report actual image regions in /proc/iomem Kees Cook
2019-10-11  0:06 ` [PATCH v2 29/29] x86: Use INT3 instead of NOP for linker fill bytes Kees Cook
2019-10-16  8:28 ` [PATCH v2 00/29] vmlinux.lds.h: Refactor EXCEPTION_TABLE and NOTES Heiko Carstens

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