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Date: Thu, 16 Aug 2012 16:33:47 +0100
From: Stefano Stabellini <Stefano.Stabellini@...citrix.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC: "xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Ian Campbell <Ian.Campbell@...rix.com>,
"Tim (Xen.org)" <tim@....org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linaro-dev@...ts.linaro.org" <linaro-dev@...ts.linaro.org>,
"catalin.marinas@....com" <catalin.marinas@....com>,
"arnd@...db.de" <arnd@...db.de>
Subject: [PATCH v3 00/23] Introduce Xen support on ARM
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 ARM developement branch
(git://xenbits.xen.org/people/ianc/xen-unstable.git arm-for-4.3) plus
the "ARM hypercall ABI: 64 bit ready" patch series
(http://marc.info/?l=xen-devel&m=134426267205408), 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 (that includes
vexpress-v2m-rs1-rtsm.dtsi) 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!
Changes in v3:
- move patches that have been picked up by Konrad at the end of the
series;
- improve comments;
- add a doc to describe the Xen Device Tree format;
- do not use xen_ulong_t for multicalls and apic_physbase;
- add a patch at the end of the series to use the new __HVC macro;
- add missing pvclock-abi.h include to ia64 header files;
- do not use an anonymous union in struct xen_add_to_physmap.
Changes in v2:
- fix up many comments and commit messages;
- remove the early_printk patches: rely on the emulated serial for now;
- remove the xen_guest_init patch: without any PV early_printk, we don't
need any early call to xen_guest_init, we can rely on core_initcall
alone;
- define an HYPERCALL macro for 5 arguments hypercall wrappers, even if
at the moment is unused;
- use ldm instead of pop in the hypercall wrappers;
- return -ENOSYS rather than -1 from the unimplemented grant_table
functions;
- remove the pvclock ifdef in the Xen headers;
- remove include linux/types.h from xen/interface/xen.h;
- replace pr_info with pr_debug in xen_guest_init;
- add a new patch to introduce xen_ulong_t and use it top replace all
the occurences of unsigned long in the public Xen interface;
- explicitely size all the pointers to 64 bit on ARM, so that the
hypercall ABI is "64 bit ready";
- clean up xenbus_init;
- make pci.o depend on CONFIG_PCI and acpi.o depend on CONFIG_ACPI;
- mark Xen guest support on ARM as EXPERIMENTAL;
- introduce GRANT_TABLE_PHYSADDR;
- remove unneeded initialization of boot_max_nr_grant_frames;
- add a new patch to clear IRQ_NOAUTOEN and IRQ_NOREQUEST in events.c;
- return -EINVAL from xen_remap_domain_mfn_range if
auto_translated_physmap;
- retain binary compatibility in xen_add_to_physmap: use a union to
introduce foreign_domid.
Ian Campbell (1):
[HACK] xen/arm: implement xen_remap_domain_mfn_range
Stefano Stabellini (24):
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
docs: Xen ARM DT bindings
xen/arm: Xen detection and shared_info page mapping
xen/arm: Introduce xen_pfn_t for pfn and mfn types
xen/arm: Introduce xen_ulong_t for unsigned long
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: get privilege status
xen/arm: initialize grant_table on ARM
xen/arm: receive Xen events on ARM
xen: clear IRQ_NOAUTOEN and IRQ_NOREQUEST
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
arm/v2m: initialize arch_timers even if v2m_timer is not present
xen/arm: use the __HVC macro
xen: missing includes
xen: update xen_add_to_physmap interface
Documentation/devicetree/bindings/arm/xen.txt | 22 +++
arch/arm/Kconfig | 10 +
arch/arm/Makefile | 1 +
arch/arm/include/asm/hypervisor.h | 6 +
arch/arm/include/asm/sync_bitops.h | 27 +++
arch/arm/include/asm/xen/events.h | 18 ++
arch/arm/include/asm/xen/hypercall.h | 69 +++++++
arch/arm/include/asm/xen/hypervisor.h | 19 ++
arch/arm/include/asm/xen/interface.h | 73 ++++++++
arch/arm/include/asm/xen/page.h | 82 ++++++++
arch/arm/mach-vexpress/v2m.c | 11 +-
arch/arm/xen/Makefile | 1 +
arch/arm/xen/enlighten.c | 245 +++++++++++++++++++++++++
arch/arm/xen/grant-table.c | 53 ++++++
arch/arm/xen/hypercall.S | 102 ++++++++++
arch/ia64/include/asm/xen/interface.h | 8 +-
arch/x86/include/asm/xen/interface.h | 8 +
arch/x86/xen/enlighten.c | 1 +
arch/x86/xen/irq.c | 1 +
arch/x86/xen/mmu.c | 3 +
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 | 2 +
drivers/xen/Makefile | 11 +-
drivers/xen/events.c | 18 ++-
drivers/xen/grant-table.c | 1 +
drivers/xen/privcmd.c | 20 +-
drivers/xen/xenbus/xenbus_comms.c | 2 +-
drivers/xen/xenbus/xenbus_probe.c | 62 +++++--
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 | 32 ++-
include/xen/interface/physdev.h | 2 +-
include/xen/interface/platform.h | 4 +-
include/xen/interface/version.h | 2 +-
include/xen/interface/xen.h | 7 +-
include/xen/privcmd.h | 3 +-
include/xen/xen.h | 2 +-
45 files changed, 885 insertions(+), 68 deletions(-)
A branch based on 3.5-rc7 is available here (the __HVC patch is missing
from this branch because it depends on "ARM: opcodes: Facilitate custom
opcode injection" http://marc.info/?l=linux-arm-kernel&m=134442896128124):
git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 3.5-rc7-arm-3
Cheers,
Stefano
View attachment "vexpress-virt.dts" of type "text/plain" (2665 bytes)
View attachment "vexpress-v2m-rs1.dtsi" of type "text/plain" (4376 bytes)
View attachment "vexpress-v2p-ca15-tc1.dts" of type "text/plain" (3156 bytes)
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