From 110b4ef3b8ebefeaf68832dd8ef8aa916a782e89 Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@intel.com>
Date: Mon, 14 Jan 2013 15:19:30 +0800
Subject: [PATCH 1/3] Xen stub driver for CPU hotplug
Add Xen stub driver for CPU hotplug, early occupy to block native,
will be replaced later by real Xen processor driver module.
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
---
drivers/xen/xen-stub.c | 34 ++++++++++++++++++++++++++++++++--
include/xen/acpi.h | 6 ++++++
2 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/xen-stub.c b/drivers/xen/xen-stub.c
index 01a49e3..681e9cc 100644
--- a/drivers/xen/xen-stub.c
+++ b/drivers/xen/xen-stub.c
@@ -28,12 +28,13 @@
#include <acpi/acpi_drivers.h>
#include <xen/acpi.h>
+
+#ifdef CONFIG_ACPI
+
/*--------------------------------------------
stub driver for Xen memory hotplug
--------------------------------------------*/
-#ifdef CONFIG_ACPI
-
static const struct acpi_device_id memory_device_ids[] = {
{ACPI_MEMORY_DEVICE_HID, 0},
{"", 0},
@@ -57,4 +58,33 @@ static int __init xen_stub_memory_device_init(void)
}
subsys_initcall(xen_stub_memory_device_init);
+
+/*--------------------------------------------
+ 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},
+};
+
+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,
+};
+EXPORT_SYMBOL_GPL(xen_stub_processor_driver);
+
+static int __init 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);
+}
+subsys_initcall(xen_stub_processor_init);
+
#endif
diff --git a/include/xen/acpi.h b/include/xen/acpi.h
index 7366e58..1c99eb5 100644
--- a/include/xen/acpi.h
+++ b/include/xen/acpi.h
@@ -46,6 +46,12 @@
extern struct acpi_driver xen_stub_memory_device_driver;
+#define ACPI_PROCESSOR_CLASS "processor"
+#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
+#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
+
+extern struct acpi_driver xen_stub_processor_driver;
+
int xen_acpi_notify_hypervisor_state(u8 sleep_state,
u32 pm1a_cnt, u32 pm1b_cnd);
--
1.7.1
Konrad Rzeszutek Wilk
2013-Jan-23 19:55 UTC
Re: [PATCH V1 1/3] Xen stub driver for CPU hotplug
On Tue, Jan 15, 2013 at 12:30:19PM +0000, Liu, Jinsong wrote:> >From 110b4ef3b8ebefeaf68832dd8ef8aa916a782e89 Mon Sep 17 00:00:00 2001 > From: Liu Jinsong <jinsong.liu@intel.com> > Date: Mon, 14 Jan 2013 15:19:30 +0800 > Subject: [PATCH 1/3] Xen stub driver for CPU hotplug > > Add Xen stub driver for CPU hotplug, early occupy to block native, > will be replaced later by real Xen processor driver module. > > Signed-off-by: Liu Jinsong <jinsong.liu@intel.com> > --- > drivers/xen/xen-stub.c | 34 ++++++++++++++++++++++++++++++++-- > include/xen/acpi.h | 6 ++++++ > 2 files changed, 38 insertions(+), 2 deletions(-) > > diff --git a/drivers/xen/xen-stub.c b/drivers/xen/xen-stub.c > index 01a49e3..681e9cc 100644 > --- a/drivers/xen/xen-stub.c > +++ b/drivers/xen/xen-stub.c > @@ -28,12 +28,13 @@ > #include <acpi/acpi_drivers.h> > #include <xen/acpi.h> > > + > +#ifdef CONFIG_ACPI > + > /*-------------------------------------------- > stub driver for Xen memory hotplug > --------------------------------------------*/ > > -#ifdef CONFIG_ACPI > - > static const struct acpi_device_id memory_device_ids[] = { > {ACPI_MEMORY_DEVICE_HID, 0}, > {"", 0}, > @@ -57,4 +58,33 @@ static int __init xen_stub_memory_device_init(void) > } > subsys_initcall(xen_stub_memory_device_init); > > + > +/*-------------------------------------------- > + 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}, > +}; > + > +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, > +}; > +EXPORT_SYMBOL_GPL(xen_stub_processor_driver);Could you make this be xen_stub_processor_deinit() instead?> + > +static int __init 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); > +} > +subsys_initcall(xen_stub_processor_init); > + > #endif > diff --git a/include/xen/acpi.h b/include/xen/acpi.h > index 7366e58..1c99eb5 100644 > --- a/include/xen/acpi.h > +++ b/include/xen/acpi.h > @@ -46,6 +46,12 @@ > > extern struct acpi_driver xen_stub_memory_device_driver; > > +#define ACPI_PROCESSOR_CLASS "processor" > +#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007" > +#define ACPI_PROCESSOR_DEVICE_NAME "Processor" > + > +extern struct acpi_driver xen_stub_processor_driver; > + > int xen_acpi_notify_hypervisor_state(u8 sleep_state, > u32 pm1a_cnt, u32 pm1b_cnd); > > -- > 1.7.1
Konrad Rzeszutek Wilk wrote:> On Tue, Jan 15, 2013 at 12:30:19PM +0000, Liu, Jinsong wrote: >>> From 110b4ef3b8ebefeaf68832dd8ef8aa916a782e89 Mon Sep 17 00:00:00 >>> 2001 >> From: Liu Jinsong <jinsong.liu@intel.com> >> Date: Mon, 14 Jan 2013 15:19:30 +0800 >> Subject: [PATCH 1/3] Xen stub driver for CPU hotplug >> >> Add Xen stub driver for CPU hotplug, early occupy to block native, >> will be replaced later by real Xen processor driver module. >> >> Signed-off-by: Liu Jinsong <jinsong.liu@intel.com> >> --- >> drivers/xen/xen-stub.c | 34 ++++++++++++++++++++++++++++++++-- >> include/xen/acpi.h | 6 ++++++ >> 2 files changed, 38 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/xen/xen-stub.c b/drivers/xen/xen-stub.c >> index 01a49e3..681e9cc 100644 >> --- a/drivers/xen/xen-stub.c >> +++ b/drivers/xen/xen-stub.c >> @@ -28,12 +28,13 @@ >> #include <acpi/acpi_drivers.h> >> #include <xen/acpi.h> >> >> + >> +#ifdef CONFIG_ACPI >> + >> /*-------------------------------------------- >> stub driver for Xen memory hotplug >> --------------------------------------------*/ >> >> -#ifdef CONFIG_ACPI >> - >> static const struct acpi_device_id memory_device_ids[] = { >> {ACPI_MEMORY_DEVICE_HID, 0}, >> {"", 0}, >> @@ -57,4 +58,33 @@ static int __init >> xen_stub_memory_device_init(void) } >> subsys_initcall(xen_stub_memory_device_init); >> >> + >> +/*-------------------------------------------- >> + 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}, >> +}; >> + >> +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, >> +}; >> +EXPORT_SYMBOL_GPL(xen_stub_processor_driver); > > Could you make this be > > xen_stub_processor_deinit() instead? >Updated, w/ 2 funcs EXPORT_SYMBOL_GPL to cpu hotplug module: xen_stub_processor_init() xen_stub_processor_exit() Thanks, Jinsong-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/