From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/xen/xen-stub.c | 100 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 kernel/drivers/xen/xen-stub.c (limited to 'kernel/drivers/xen/xen-stub.c') diff --git a/kernel/drivers/xen/xen-stub.c b/kernel/drivers/xen/xen-stub.c new file mode 100644 index 000000000..bbef194c5 --- /dev/null +++ b/kernel/drivers/xen/xen-stub.c @@ -0,0 +1,100 @@ +/* + * xen-stub.c - stub drivers to reserve space for Xen + * + * Copyright (C) 2012 Intel Corporation + * Author: Liu Jinsong + * Author: Jiang Yunhong + * + * Copyright (C) 2012 Oracle Inc + * Author: Konrad Rzeszutek Wilk + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for more + * details. + */ + +#include +#include +#include +#include +#include +#include + +#ifdef CONFIG_ACPI + +/*-------------------------------------------- + stub driver for Xen memory hotplug +--------------------------------------------*/ + +static const struct acpi_device_id memory_device_ids[] = { + {ACPI_MEMORY_DEVICE_HID, 0}, + {"", 0}, +}; + +static struct acpi_driver xen_stub_memory_device_driver = { + /* same name as native memory driver to block native loaded */ + .name = "acpi_memhotplug", + .class = ACPI_MEMORY_DEVICE_CLASS, + .ids = memory_device_ids, +}; + +int xen_stub_memory_device_init(void) +{ + if (!xen_initial_domain()) + return -ENODEV; + + /* just reserve space for Xen, block native driver loaded */ + return acpi_bus_register_driver(&xen_stub_memory_device_driver); +} +EXPORT_SYMBOL_GPL(xen_stub_memory_device_init); +subsys_initcall(xen_stub_memory_device_init); + +void xen_stub_memory_device_exit(void) +{ + acpi_bus_unregister_driver(&xen_stub_memory_device_driver); +} +EXPORT_SYMBOL_GPL(xen_stub_memory_device_exit); + + +/*-------------------------------------------- + stub driver for Xen cpu hotplug +--------------------------------------------*/ + +static const struct acpi_device_id processor_device_ids[] = { + {ACPI_PROCESSOR_OBJECT_HID, 0}, + {ACPI_PROCESSOR_DEVICE_HID, 0}, + {"", 0}, +}; + +static struct acpi_driver xen_stub_processor_driver = { + /* same name as native processor driver to block native loaded */ + .name = "processor", + .class = ACPI_PROCESSOR_CLASS, + .ids = processor_device_ids, +}; + +int xen_stub_processor_init(void) +{ + if (!xen_initial_domain()) + return -ENODEV; + + /* just reserve space for Xen, block native driver loaded */ + return acpi_bus_register_driver(&xen_stub_processor_driver); +} +EXPORT_SYMBOL_GPL(xen_stub_processor_init); +subsys_initcall(xen_stub_processor_init); + +void xen_stub_processor_exit(void) +{ + acpi_bus_unregister_driver(&xen_stub_processor_driver); +} +EXPORT_SYMBOL_GPL(xen_stub_processor_exit); + +#endif -- cgit 1.2.3-korg