From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: Liav Rehana <liavr@mellanox.com>
Cc: "noamca@mellanox.com" <noamca@mellanox.com>,
"linux-snps-arc@lists.infradead.org"
<linux-snps-arc@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"eladkan@mellanox.com" <eladkan@mellanox.com>
Subject: Re: [PATCH] ARC: Change ld.as instruction to regular ld.
Date: Wed, 17 Aug 2016 10:16:44 -0700 [thread overview]
Message-ID: <fceb8e24-0c94-a84d-5ed8-7fbe33f369d4@synopsys.com> (raw)
In-Reply-To: <1471415037-14544-1-git-send-email-liavr@mellanox.com>
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
next prev parent reply other threads:[~2016-08-17 17:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-17 6:23 Liav Rehana
2016-08-17 17:16 ` Vineet Gupta [this message]
2016-08-25 12:05 ` Alexey Brodkin
2016-08-25 17:40 ` Vineet Gupta
-- strict thread matches above, loose matches on Subject: below --
2016-08-16 7:55 Liav Rehana
2016-08-16 13:15 ` Alexey Brodkin
2016-08-16 15:47 ` Vineet Gupta
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