linux-kernel - Re: [PATCH 2/4] xen: limit grant v2 interface to the v1 functionality

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 for Android: free password hash cracker in your pocket

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

Message-ID: <f9cc6652-c524-bf4f-73f0-494d16deedf0@oracle.com>
Date:   Tue, 12 Sep 2017 11:44:41 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH 2/4] xen: limit grant v2 interface to the v1 functionality

On 09/08/2017 10:48 AM, Juergen Gross wrote:
> As there is currently no user for sub-page grants or transient grants
> remove that functionality. This at once makes it possible to switch
> from grant v2 to grant v1 without restrictions, as there is no loss of
> functionality other than the limited frame number width related to
> the switch.

But isn't that ABI violation? v2 is expected to support this (XSAs
notwithstanding)

-boris