Hi all, this patch series implements Xen support for ARMv7 with virtualization extensions. It allows a Linux guest to boot as dom0 and as domU on Xen on ARM. PV console, disk and network frontends and backends are all working correctly.
It has been tested on a Versatile Express Cortex A15 emulator, using the latest Xen, and a simple ad-hoc tool to build guest domains (marc.info/?l=xen-devel&m=134089788016546).
The patch marked with [HACK] shouldn't be applied and is part of the series only because it is needed to create domUs.
I am also attaching to this email the dts'es that I am currently using for dom0 and domU: vexpress-v2p-ca15-tc1.dts is the dts used for dom0 and it is passed to Linux by Xen, while vexpress-virt.dts is the dts used for other domUs and it is appended in binary form to the guest kernel image. I am not sure where they are supposed to live yet, so I am just attaching them here so that people can actually try out this series if they want to.
Comments are very welcome!
Ian Campbell (2): ARM: enable earlyprintk=xen [HACK] xen/arm: implement xen_remap_domain_mfn_range
Stefano Stabellini (22): arm: initial Xen support xen/arm: hypercalls xen/arm: page.h definitions xen/arm: sync_bitops xen/arm: empty implementation of grant_table arch specific functions xen: missing includes xen/arm: Xen detection and shared_info page mapping xen/arm: Introduce xen_pfn_t for pfn and mfn types xen/arm: compile and run xenbus xen: do not compile manage, balloon, pci, acpi and cpu_hotplug on ARM xen/arm: introduce CONFIG_XEN on ARM xen/arm: Introduce xen_guest_init xen/arm: get privilege status xen/arm: initialize grant_table on ARM xen/arm: receive Xen events on ARM xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree xen: allow privcmd for HVM guests xen/arm: compile blkfront and blkback xen/arm: compile netback xen: update xen_add_to_physmap interface arm/v2m: initialize arch_timers even if v2m_timer is not present hvc_xen: allow dom0_write_console for HVM guests
arch/arm/Kconfig | 10 ++ arch/arm/Makefile | 1 + arch/arm/include/asm/hypervisor.h | 6 + arch/arm/include/asm/sync_bitops.h | 17 ++ arch/arm/include/asm/xen/hypercall.h | 69 ++++++++ arch/arm/include/asm/xen/hypervisor.h | 19 +++ arch/arm/include/asm/xen/interface.h | 66 ++++++++ arch/arm/include/asm/xen/page.h | 77 +++++++++ arch/arm/kernel/early_printk.c | 11 ++- arch/arm/mach-vexpress/v2m.c | 11 +- arch/arm/xen/Makefile | 1 + arch/arm/xen/enlighten.c | 244 ++++++++++++++++++++++++++++ arch/arm/xen/grant-table.c | 53 ++++++ arch/arm/xen/hypercall.S | 65 ++++++++ arch/ia64/include/asm/xen/interface.h | 2 +- arch/x86/include/asm/xen/interface.h | 2 + arch/x86/xen/enlighten.c | 9 + arch/x86/xen/irq.c | 1 + arch/x86/xen/xen-ops.h | 1 - drivers/block/xen-blkback/blkback.c | 1 + drivers/net/xen-netback/netback.c | 1 + drivers/net/xen-netfront.c | 1 + drivers/tty/hvc/hvc_xen.c | 14 +- drivers/xen/Makefile | 9 +- drivers/xen/events.c | 18 ++- drivers/xen/grant-table.c | 3 +- drivers/xen/privcmd.c | 20 +-- drivers/xen/xenbus/xenbus_comms.c | 2 +- drivers/xen/xenbus/xenbus_probe.c | 27 ++-- drivers/xen/xenbus/xenbus_probe_frontend.c | 1 + drivers/xen/xenbus/xenbus_xs.c | 1 + drivers/xen/xenfs/super.c | 7 + include/xen/events.h | 2 + include/xen/interface/features.h | 3 + include/xen/interface/grant_table.h | 4 +- include/xen/interface/io/protocols.h | 3 + include/xen/interface/memory.h | 19 ++- include/xen/interface/platform.h | 4 +- include/xen/interface/xen.h | 9 +- include/xen/privcmd.h | 3 +- include/xen/xen.h | 4 +- 41 files changed, 763 insertions(+), 58 deletions(-)
A branch based on 3.5-rc7 is available here:
git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 3.5-rc7-arm-1
Cheers,
Stefano