linux-kernel - Re: [PATCH 00/10] x86: Add support for running as secondary Jailhouse guest

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:   Sat, 18 Nov 2017 13:15:51 -0800
From:   "H. Peter Anvin" <hpa@...or.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>
Cc:     x86@...nel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        jailhouse-dev@...glegroups.com
Subject: Re: [PATCH 00/10] x86: Add support for running as secondary Jailhouse
 guest

On 11/15/17 23:26, Jan Kiszka wrote:
> This series paves the way to run Linux in so-called non-root cells
> (guest partitions) of the Jailhouse hypervisor.
> 
> Jailhouse [1] was started 4 years ago as an open-source (GPL) leight-
> weight hypervisor that statically partitions SMP systems. It's unique in
> that it uses one Linux instance, the root cell, as boot loader and
> management console. Jailhouse targets use cases for hard real-time and
> safety-critical systems that KVM cannot cater due to its inherent
> complexity.
> 
> Jaihouse can run bare-metal, free and closed-source RTOSes as secondary
> guests and, with this series, also x86 Linux instances. While ARM and
> ARM64 non-root Linux guests are feasible without extra patches, thanks
> to the high configurability via device trees, x86 requires special
> platform support, mostly to step away from non-existing resources in a
> non-root Jailhouse cell.
> 

Could you please write a single summary about the virtualization holes
in Jailhouse that you are papering over?

	-hpa