linux-kernel - Re: USB mass storage and ARM cache coherency

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, 2 Feb 2010 21:36:05 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	Oliver Neukum <oliver@...kum.org>,
	Matthew Dharm <mdharm-kernel@...-eyed-alien.net>,
	Sergei Shtylyov <sshtylyov@...mvista.com>,
	linux-usb@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Sebastian Siewior <bigeasy@...utronix.de>,
	Greg KH <greg@...ah.com>
Subject: Re: USB mass storage and ARM cache coherency

2010/2/2 Catalin Marinas <catalin.marinas@....com>:

> In the iSCSI case, does the HCD driver write directly to a page cache
> page? Or it just fills in network packets that are copied to page cache
> pages by the iSCSI code (sorry, I'm not familiar with this part of the
> kernel). If the latter, the cache flushing in the HCD driver would not
> help and it needs to be done in the iSCSI code.

So we should flush dcache page in the place where the user mapped
page is copied to, instead of low level driver which does not do such
thing always.

-- 
Lei Ming
--
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/