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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 22:13:01 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 22:13:01 (GMT) |
commit | f1c6872e4980bc4078cfaead05f892b3d78dea64 (patch) | |
tree | 24c18bb07714109296638b3193b35bdcc4098f7c /drivers/xen | |
parent | 5f3d2f2e1a63679cf1c4a4210f2f1cc2f335bef6 (diff) | |
parent | 4ed5978bdd99114db7773cb3d78f2998bd17f694 (diff) | |
download | linux-f1c6872e4980bc4078cfaead05f892b3d78dea64.tar.xz |
Merge tag 'stable/for-linus-3.7-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull ADM Xen support from Konrad Rzeszutek Wilk:
Features:
* Allow a Linux guest to boot as initial domain and as normal guests
on Xen on ARM (specifically ARMv7 with virtualized extensions). PV
console, block and network frontend/backends are working.
Bug-fixes:
* Fix compile linux-next fallout.
* Fix PVHVM bootup crashing.
The Xen-unstable hypervisor (so will be 4.3 in a ~6 months), supports
ARMv7 platforms.
The goal in implementing this architecture is to exploit the hardware
as much as possible. That means use as little as possible of PV
operations (so no PV MMU) - and use existing PV drivers for I/Os
(network, block, console, etc). This is similar to how PVHVM guests
operate in X86 platform nowadays - except that on ARM there is no need
for QEMU. The end result is that we share a lot of the generic Xen
drivers and infrastructure.
Details on how to compile/boot/etc are available at this Wiki:
http://wiki.xen.org/wiki/Xen_ARMv7_with_Virtualization_Extensions
and this blog has links to a technical discussion/presentations on the
overall architecture:
http://blog.xen.org/index.php/2012/09/21/xensummit-sessions-new-pvh-virtualisation-mode-for-arm-cortex-a15arm-servers-and-x86/
* tag 'stable/for-linus-3.7-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (21 commits)
xen/xen_initial_domain: check that xen_start_info is initialized
xen: mark xen_init_IRQ __init
xen/Makefile: fix dom-y build
arm: introduce a DTS for Xen unprivileged virtual machines
MAINTAINERS: add myself as Xen ARM maintainer
xen/arm: compile netback
xen/arm: compile blkfront and blkback
xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree
xen/arm: receive Xen events on ARM
xen/arm: initialize grant_table on ARM
xen/arm: get privilege status
xen/arm: introduce CONFIG_XEN on ARM
xen: do not compile manage, balloon, pci, acpi, pcpu and cpu_hotplug on ARM
xen/arm: Introduce xen_ulong_t for unsigned long
xen/arm: Xen detection and shared_info page mapping
docs: Xen ARM DT bindings
xen/arm: empty implementation of grant_table arch specific functions
xen/arm: sync_bitops
xen/arm: page.h definitions
xen/arm: hypercalls
...
Diffstat (limited to 'drivers/xen')
-rw-r--r-- | drivers/xen/Makefile | 14 | ||||
-rw-r--r-- | drivers/xen/events.c | 14 |
2 files changed, 22 insertions, 6 deletions
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index a4a3cab..0e863703 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -1,11 +1,19 @@ -obj-y += grant-table.o features.o events.o manage.o balloon.o +ifneq ($(CONFIG_ARM),y) +obj-y += manage.o balloon.o +obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o +endif +obj-y += grant-table.o features.o events.o obj-y += xenbus/ nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_features.o := $(nostackp) +dom0-$(CONFIG_PCI) += pci.o +dom0-$(CONFIG_USB_SUPPORT) += dbgp.o +dom0-$(CONFIG_ACPI) += acpi.o +dom0-$(CONFIG_X86) += pcpu.o +obj-$(CONFIG_XEN_DOM0) += $(dom0-y) obj-$(CONFIG_BLOCK) += biomerge.o -obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o obj-$(CONFIG_XEN_XENCOMM) += xencomm.o obj-$(CONFIG_XEN_BALLOON) += xen-balloon.o obj-$(CONFIG_XEN_SELFBALLOONING) += xen-selfballoon.o @@ -17,8 +25,6 @@ obj-$(CONFIG_XEN_SYS_HYPERVISOR) += sys-hypervisor.o obj-$(CONFIG_XEN_PVHVM) += platform-pci.o obj-$(CONFIG_XEN_TMEM) += tmem.o obj-$(CONFIG_SWIOTLB_XEN) += swiotlb-xen.o -obj-$(CONFIG_XEN_DOM0) += pcpu.o -obj-$(CONFIG_XEN_DOM0) += pci.o dbgp.o acpi.o obj-$(CONFIG_XEN_MCE_LOG) += mcelog.o obj-$(CONFIG_XEN_PCIDEV_BACKEND) += xen-pciback/ obj-$(CONFIG_XEN_PRIVCMD) += xen-privcmd.o diff --git a/drivers/xen/events.c b/drivers/xen/events.c index c60d162..59e10a1 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -31,14 +31,16 @@ #include <linux/irqnr.h> #include <linux/pci.h> +#ifdef CONFIG_X86 #include <asm/desc.h> #include <asm/ptrace.h> #include <asm/irq.h> #include <asm/idle.h> #include <asm/io_apic.h> -#include <asm/sync_bitops.h> #include <asm/xen/page.h> #include <asm/xen/pci.h> +#endif +#include <asm/sync_bitops.h> #include <asm/xen/hypercall.h> #include <asm/xen/hypervisor.h> @@ -50,6 +52,9 @@ #include <xen/interface/event_channel.h> #include <xen/interface/hvm/hvm_op.h> #include <xen/interface/hvm/params.h> +#include <xen/interface/physdev.h> +#include <xen/interface/sched.h> +#include <asm/hw_irq.h> /* * This lock protects updates to the following mapping and reference-count @@ -1386,7 +1391,9 @@ void xen_evtchn_do_upcall(struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); +#ifdef CONFIG_X86 exit_idle(); +#endif irq_enter(); __xen_evtchn_do_upcall(); @@ -1797,7 +1804,7 @@ void xen_callback_vector(void) {} void __init xen_init_IRQ(void) { - int i, rc; + int i; evtchn_to_irq = kcalloc(NR_EVENT_CHANNELS, sizeof(*evtchn_to_irq), GFP_KERNEL); @@ -1813,6 +1820,7 @@ void __init xen_init_IRQ(void) pirq_needs_eoi = pirq_needs_eoi_flag; +#ifdef CONFIG_X86 if (xen_hvm_domain()) { xen_callback_vector(); native_init_IRQ(); @@ -1820,6 +1828,7 @@ void __init xen_init_IRQ(void) * __acpi_register_gsi can point at the right function */ pci_xen_hvm_init(); } else { + int rc; struct physdev_pirq_eoi_gmfn eoi_gmfn; irq_ctx_init(smp_processor_id()); @@ -1835,4 +1844,5 @@ void __init xen_init_IRQ(void) } else pirq_needs_eoi = pirq_check_eoi_map; } +#endif } |