The pvhvm drivers for Xen allow a fully virtualised guest (aka HVM) to use the Xen PV disk and network interfaces the same as a Xen guest running paravirtualised, in addition they allow for PV time and event delivery, suspend/resume support and PV hooks to improve performance under shadow page tables.
The drivers are currently in linux-next and are expected to go in during the next merge window. Stefano (the upstream author) has also prepared backports to 2.6.32 for RHEL6 and I would like to know if there would be interest in (or rather objections to) my adding these to the squeeze kernel? The majority of the patch is a new driver for a virtual PCI device which provides the glue to allow the existing PV drivers to work in an HVM context. The diffstat (below vs 2.6.32) is a bit daunting but really it is just some infrastructure hooks and the new "platform-pci" driver. The functionality is also rather modular so it would be possible e.g. to just have PV disk and network but not time etc etc. The full series of patches can be found at http://xenbits.xensource.com/gitweb?p=people/sstabellini/linux-pvhvm.git in the branch 2.6.32-pvhvm Opinions? Ian. Documentation/kernel-parameters.txt | 11 ++ arch/x86/include/asm/irq_vectors.h | 3 + arch/x86/include/asm/setup.h | 2 +- arch/x86/include/asm/xen/hypercall.h | 6 + arch/x86/include/asm/xen/hypervisor.h | 2 + arch/x86/kernel/entry_32.S | 3 + arch/x86/kernel/entry_64.S | 3 + arch/x86/kernel/hpet.c | 18 ++-- arch/x86/kernel/setup.c | 2 + arch/x86/xen/Makefile | 2 +- arch/x86/xen/enlighten.c | 136 ++++++++++++++++++++-- arch/x86/xen/mmu.c | 33 +++++ arch/x86/xen/mmu.h | 1 + arch/x86/xen/platform-pci-unplug.c | 132 +++++++++++++++++++++ arch/x86/xen/suspend.c | 13 ++ arch/x86/xen/time.c | 62 +++++++++- arch/x86/xen/xen-ops.h | 12 +- drivers/block/xen-blkfront.c | 91 +++++++++++++- drivers/input/xen-kbdfront.c | 2 +- drivers/video/xen-fbfront.c | 2 +- drivers/xen/Kconfig | 12 ++- drivers/xen/Makefile | 3 +- drivers/xen/events.c | 91 +++++++++++++-- drivers/xen/grant-table.c | 77 +++++++++++-- drivers/xen/manage.c | 46 +++++++- drivers/xen/platform-pci.c | 207 +++++++++++++++++++++++++++++++++ drivers/xen/xenbus/xenbus_probe.c | 47 ++++++-- drivers/xen/xenfs/super.c | 4 +- include/asm-generic/vmlinux.lds.h | 1 + include/linux/pci_ids.h | 3 + include/xen/events.h | 7 + include/xen/grant_table.h | 4 + include/xen/hvm.h | 30 +++++ include/xen/interface/features.h | 6 + include/xen/interface/grant_table.h | 1 + include/xen/interface/hvm/hvm_op.h | 46 +++++++ include/xen/interface/hvm/params.h | 95 +++++++++++++++ include/xen/platform_pci.h | 49 ++++++++ include/xen/xen-ops.h | 3 + 39 files changed, 1189 insertions(+), 79 deletions(-) -- Ian Campbell Current Noise: Rotting Christ - Shades Of Evil Nothing lasts forever. Where do I find nothing? -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1280241841.5872.8852.ca...@zakaz.uk.xensource.com
