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
| ||
|
Date: Tue, 12 Jan 2010 11:47:48 -0500 From: Christoph Hellwig <hch@...radead.org> To: Michal Novotny <minovotn@...hat.com> Cc: Christoph Hellwig <hch@...radead.org>, Ric Wheeler <rwheeler@...hat.com>, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] extend e2fsprogs functionality to add EXT2_FLAG_DIRECT option On Tue, Jan 12, 2010 at 05:43:21PM +0100, Michal Novotny wrote: > So, do you think the problem is in the Xen backend drivers and to make > it working right in Xen the driver fix is needed? Yes, the Xen blkback driver just submits I/O directly without using the right interfaces to force cache coherency. It might be relatively easy to hack a call in to flush all caches when it starts up, but given how it bypasses all abstractions it's almost impossible to give full coherency as if using the normal block device interfaces. -- 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/
Powered by blists - more mailing lists