linux-kernel - Re: [PATCH] vhost: copy_from_user -> __copy_from

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 06 Mar 2011 18:03:39 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mst@...hat.com
Cc:	kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vhost: copy_from_user -> __copy_from_user

From: "Michael S. Tsirkin" <mst@...hat.com>
Date: Sun, 6 Mar 2011 13:33:49 +0200

> copy_from_user is pretty high on perf top profile,
> replacing it with __copy_from_user helps.
> It's also safe because we do access_ok checks during setup.
> 
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>

Is Rusty going to take this or should I?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/