linux-kernel - Re: [PATCH] storvsc: get rid of homegrown copy_{to,from}_bounce

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:	Tue, 22 Sep 2015 14:53:10 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	"James E.J. Bottomley" <JBottomley@...n.com>,
	Radim Kr??m???? <rkrcmar@...hat.com>
Subject: Re: [PATCH] storvsc: get rid of homegrown
 copy_{to,from}_bounce_buffer()

On Tue, Sep 22, 2015 at 06:27:50PM +0200, Vitaly Kuznetsov wrote:
> Storvsc driver needs to ensure there are no 'holes' in the presented
> sg list (all segments in the middle of the list need to be of PAGE_SIZE).

I think it should instead set a virt_boundary.  That's what we added for
the NVMe driver which has the same requirements, and Sagi recently also
switched iSER to it after we ensured that flag is handled correctly by
the SG_IO ioctl.
--
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/