Re: [PATCH] ARC: Change ld.as instruction to regular ld.

From	Vineet Gupta <Vineet.Gupta1@synopsys.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ARC: Change ld.as instruction to regular ld.
Date	2016-08-17 19:20 +0200
Message-ID	<s7cFr-40T-3@gated-at.bofh.it> (permalink)
References	<s7cFr-40T-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On 08/16/2016 11:24 PM, Liav Rehana wrote:
> From: Liav Rehana <liavr@mellanox.com>
>
> User mode callee regs are explicitly collected before signal delivery
> or breakpoint trap. r25 is special for kernel as it serves as task
> pointer, so user mode value is clobbered very early. It is saved in
> pt_regs where generally only scratch (caller saved) res are saved.
> The code to access the corresponding pt_regs location had a subtle bug
> as it was using load/store with scaling of offset, whereas the offset
> was already byte wise correct. So fix this by replacing LD.AS with a
> standard LD
>
> Signed-off-by: Liav Rehana <liavr@mellanox.com>

Thx for the fix Liv.
I added it to my for-curr.

-Vineet

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

Re: [PATCH] ARC: Change ld.as instruction to regular ld. Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2016-08-17 19:20 +0200

csiph-web