kernel.git/drivers/xen/Makefile, branch linux-3.19.y

xen-scsiback: Add Xen PV SCSI backend driver

2014-09-23T13:36:19Z

Introduces the Xen pvSCSI backend. With pvSCSI it is possible for a Xen domU to issue SCSI commands to a SCSI LUN assigned to that domU. The SCSI commands are passed to the pvSCSI backend in a driver domain (usually Dom0) which is owner of the physical device. This allows e.g. to use SCSI tape drives in a Xen domU. The code is taken from the pvSCSI implementation in Xen done by Fujitsu based on Linux kernel 2.6.18. Changes from the original version are: - port to upstream kernel - put all code in just one source file - adapt to Linux style guide - use target core infrastructure instead doing pure pass-through - enable module unloading - support SG-list in grant page(s) - support task abort - remove redundant struct backend - allocate resources dynamically - correct minor error in scsiback_fast_flush_area - free allocated resources in case of error during I/O preparation - remove CDB emulation, now handled by target core infrastructure Signed-off-by: Juergen Gross Reviewed-by: Nicholas Bellinger Signed-off-by: David Vrabel

xen: Put EFI machinery in place

2014-07-18T20:23:58Z

This patch enables EFI usage under Xen dom0. Standard EFI Linux Kernel infrastructure cannot be used because it requires direct access to EFI data and code. However, in dom0 case it is not possible because above mentioned EFI stuff is fully owned and controlled by Xen hypervisor. In this case all calls from dom0 to EFI must be requested via special hypercall which in turn executes relevant EFI code in behalf of dom0. When dom0 kernel boots it checks for EFI availability on a machine. If it is detected then artificial EFI system table is filled. Native EFI callas are replaced by functions which mimics them by calling relevant hypercall. Later pointer to EFI system table is passed to standard EFI machinery and it continues EFI subsystem initialization taking into account that there is no direct access to EFI boot services, runtime, tables, structures, etc. After that system runs as usual. This patch is based on Jan Beulich and Tang Liang work. Signed-off-by: Jan Beulich Signed-off-by: Tang Liang Signed-off-by: Daniel Kiper Reviewed-by: David Vrabel Acked-by: Stefano Stabellini

ia64/xen: Remove Xen support for ia64 even more

2014-02-11T15:12:37Z

Commit d52eefb47d4e ("ia64/xen: Remove Xen support for ia64") removed the Kconfig symbol XEN_XENCOMM. But it didn't remove the code depending on that symbol. Remove that code now. Signed-off-by: Paul Bolle Acked-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk

xen/events: move drivers/xen/events.c into drivers/xen/events/

2014-01-06T15:07:38Z

events.c will be split into multiple files so move it into its own directory. Signed-off-by: David Vrabel Reviewed-by: Konrad Rzeszutek Wilk Reviewed-by: Boris Ostrovsky

xen/arm: enable PV control for ARM

2013-07-29T13:35:11Z

Enable lifecyle management (reboot, shutdown...) from the toolstack for ARM guests. Signed-off-by: Julien Grall Signed-off-by: Konrad Rzeszutek Wilk Acked-by: Stefano Stabellini

xen/arm64: Don't compile cpu hotplug

2013-07-29T13:33:15Z

On ARM64, when CONFIG_XEN=y, the compilation will fail because CPU hotplug is not yet supported with XEN. For now, disable it. Signed-off-by: Julien Grall Signed-off-by: Konrad Rzeszutek Wilk Acked-by: Mark Rutland

xen/acpi: ACPI cpu hotplug

2013-02-20T03:02:29Z

This patch implement real Xen ACPI cpu hotplug driver as module. When loaded, it replaces Xen stub driver. For booting existed cpus, the driver enumerates them. For hotadded cpus, which added at runtime and notify OS via device or container event, the driver is invoked to add them, parsing cpu information, hypercalling to Xen hypervisor to add them, and finally setting up new /sys interface for them. Signed-off-by: Liu Jinsong Signed-off-by: Konrad Rzeszutek Wilk

xen/acpi: ACPI memory hotplug

2013-02-20T03:02:26Z

This patch implements real Xen acpi memory hotplug driver as module. When loaded, it replaces Xen stub driver. When an acpi memory device hotadd event occurs, it notifies OS and invokes notification callback, adding related memory device and parsing memory information, finally hypercall to xen hypervisor to add memory. Signed-off-by: Liu Jinsong Signed-off-by: Konrad Rzeszutek Wilk

xen/stub: driver for memory hotplug

2013-02-20T03:02:25Z

This patch create a file (xen-stub.c) for Xen stub drivers. Xen stub drivers are used to reserve space for Xen drivers, i.e. memory hotplug and cpu hotplug, and to block native drivers loaded, so that real Xen drivers can be modular and loaded on demand. This patch is specific for Xen memory hotplug (other Xen logic can add stub drivers on their own). The xen stub driver will occupied earlier via subsys_initcall (than native memory hotplug driver via module_init and so blocking native). Later real Xen memory hotplug logic will unregister the stub driver and register itself to take effect on demand. Signed-off-by: Liu Jinsong Signed-off-by: Konrad Rzeszutek Wilk

Merge tag 'stable/for-linus-3.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

2012-12-13T22:29:16Z

Pull Xen updates from Konrad Rzeszutek Wilk: - Add necessary infrastructure to make balloon driver work under ARM. - Add /dev/xen/privcmd interfaces to work with ARM and PVH. - Improve Xen PCIBack wild-card parsing. - Add Xen ACPI PAD (Processor Aggregator) support - so can offline/ online sockets depending on the power consumption. - PVHVM + kexec = use an E820_RESV region for the shared region so we don't overwrite said region during kexec reboot. - Cleanups, compile fixes. Fix up some trivial conflicts due to the balloon driver now working on ARM, and there were changes next to the previous work-arounds that are now gone. * tag 'stable/for-linus-3.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/PVonHVM: fix compile warning in init_hvm_pv_info xen: arm: implement remap interfaces needed for privcmd mappings. xen: correctly use xen_pfn_t in remap_domain_mfn_range. xen: arm: enable balloon driver xen: balloon: allow PVMMU interfaces to be compiled out xen: privcmd: support autotranslated physmap guests. xen: add pages parameter to xen_remap_domain_mfn_range xen/acpi: Move the xen_running_on_version_or_later function. xen/xenbus: Remove duplicate inclusion of asm/xen/hypervisor.h xen/acpi: Fix compile error by missing decleration for xen_domain. xen/acpi: revert pad config check in xen_check_mwait xen/acpi: ACPI PAD driver xen-pciback: reject out of range inputs xen-pciback: simplify and tighten parsing of device IDs xen PVonHVM: use E820_Reserved area for shared_info