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SubjectRe: [PATCH v2 10/39] x86/ibt,crypto: Add ENDBR for the jump-table entries
On Thu, Feb 24, 2022 at 03:51:48PM +0100, Peter Zijlstra wrote:
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Can you put some details in the commit log here about why these are
needed? My eyes can't find the indirect users...

> ---
> arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 3 +++
> 1 file changed, 3 insertions(+)
>
> --- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
> +++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
> @@ -195,6 +195,7 @@ SYM_FUNC_START(crc_pcl)
> .altmacro
> LABEL crc_ %i
> .noaltmacro
> + ENDBR
> crc32q -i*8(block_0), crc_init
> crc32q -i*8(block_1), crc1
> crc32q -i*8(block_2), crc2
> @@ -203,6 +204,7 @@ LABEL crc_ %i

--
Kees Cook

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