linux-kernel - Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests

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]

Message-ID: <20140724162427.GA10962@sucs.org>
Date:	Thu, 24 Jul 2014 17:24:27 +0100
From:	Sitsofe Wheeler <sitsofe@...il.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	"Martin K. Petersen" <martin.petersen@...cle.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	ohering@...e.com, apw@...onical.com, jasowang@...hat.com,
	jbottomley@...allels.com, linux-scsi@...r.kernel.org
Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests

On Thu, Jul 24, 2014 at 08:35:13AM -0700, Christoph Hellwig wrote:
> On Thu, Jul 24, 2014 at 08:34:19AM -0700, Christoph Hellwig wrote:
> > I agree - I'd like to pull in KY's simple fix as soon as I get a second
> > review for it.
> 
> Ok, looks like I just got that from Hannes.  Let's see if there's more
> to be done for the pass through case, but I'd rather wait for the next
> window for that.

There's nothing Linux can do for today's Hyper-V passthrough wrt to
automatically turning on discard on my SATA SSD.

Martin explained that vendors often disable UNMAP/WRITE SAME to DSM TRIM
translation on purpose and/or have explicit device whitelists/blacklists
for those devices they want to support. It could be that Microsoft are
doing something similar (although it might be interesting to know how a
Windows 2012 guest on Hyper-V handles things).

-- 
Sitsofe | http://sucs.org/~sits/
--
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/