linux-kernel

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-next>] [day] [month] [year] [list]

Date:	Tue,  2 Feb 2010 16:19:01 +0800
From:	Sheng Yang <sheng@...ux.intel.com>
To:	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Keir Fraser <keir.fraser@...citrix.com>
Cc:	xen-devel <xen-devel@...ts.xensource.com>,
	linux-kernel@...r.kernel.org
Subject: 

Hi, Jeremy & Keir

Here is the second version of patchset to enable Xen Hybrid extension support
in Linux kernel.

The Hybrid Extension is started from real mode like HVM guest, but also with a
a range of PV features(e.g. PV halt, PV timer, event channel, as well as PV
drivers). So guest with Hybrid extension feature can takes the advantages of
both H/W virtualization and Para-Virtualization.

The first two of the patchset imported several header file from Jeremy's tree
and Xen tree, respect to Jeremy and Keir's works.

The whole patchset based on Linux upstream.

Current the patchset support x86_64 only.

The major change from v1:
1. SMP support.
2. Modify the entrance point to avoid most of genernic kernel modification.
3. Binding PV timer with event channel mechanism.

You need a line like:

cpuid = [ '0x40000002:edx=0x3' ]

in HVM configuration file to expose hybrid feature to guest, and

CONFIG_XEN

in the guest kernel configuration file to enable the hybrid support.

And the compiled image can be used as native/pv domU/hvm guest/hybrid kernel.

Comments are welcome!

BTW: For the MSI/MSI-X support, pv_ops dom0 can share the solution with hybrid.
We would try to figure out a elegant way to deal with it later.

--
regards
Yang, Sheng

--
 arch/x86/include/asm/xen/cpuid.h     |   73 +++++++++++++
 arch/x86/include/asm/xen/hypercall.h |    6 +
 arch/x86/kernel/setup.c              |    8 ++
 arch/x86/xen/enlighten.c             |  192 ++++++++++++++++++++++++++++++++++
 arch/x86/xen/irq.c                   |   54 ++++++++++
 arch/x86/xen/smp.c                   |  144 +++++++++++++++++++++++++-
 arch/x86/xen/xen-head.S              |    6 +
 arch/x86/xen/xen-ops.h               |    4 +
 drivers/block/xen-blkfront.c         |    3 +
 drivers/input/xen-kbdfront.c         |    4 +
 drivers/net/xen-netfront.c           |    3 +
 drivers/video/xen-fbfront.c          |    4 +
 drivers/xen/events.c                 |   66 +++++++++++-
 drivers/xen/grant-table.c            |   67 ++++++++++++-
 drivers/xen/xenbus/xenbus_probe.c    |   23 ++++-
 include/xen/events.h                 |    1 +
 include/xen/hvm.h                    |   28 +++++
 include/xen/interface/hvm/hvm_op.h   |   79 ++++++++++++++
 include/xen/interface/hvm/params.h   |  111 ++++++++++++++++++++
 include/xen/interface/xen.h          |    6 +-
 include/xen/xen.h                    |   12 ++
 21 files changed, 883 insertions(+), 11 deletions(-)

--
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/