linux-kernel - Re: [RFC 1/2] vfio/pci: keep the prefetchable attribute of a BAR region in VMA

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: <20210506072221.GA338890@infradead.org>
Date:   Thu, 6 May 2021 08:22:21 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Will Deacon <will@...nel.org>, Vikram Sethi <vsethi@...dia.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Mark Kettenis <mark.kettenis@...all.nl>,
        Marc Zyngier <maz@...nel.org>,
        Shanker Donthineni <sdonthineni@...dia.com>,
        "christoffer.dall@....com" <christoffer.dall@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        Jason Sequeira <jsequeira@...dia.com>
Subject: Re: [RFC 1/2] vfio/pci: keep the prefetchable attribute of a BAR
 region in VMA

On Wed, May 05, 2021 at 07:02:31PM +0100, Catalin Marinas wrote:
> > Furthermore, ioremap() already gives you a Device memory type, and we're
> > tight on MAIR space.
> 
> We have MT_DEVICE_GRE currently reserved though no in-kernel user, we
> might as well remove it.

Please do.  The more we can cut down on different memory types, the
better.