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authorStefano Stabellini <stefano.stabellini@eu.citrix.com>2010-07-29 14:37:48 +0100
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-07-29 11:11:33 -0700
commitca65f9fc0c447da5b270b05c41c21b19c88617c3 (patch)
tree7a8813233d867635d01cc2c8397099df4468751d
parentb98a409b80ac510c95b4f1bafdef28edaeabd3e7 (diff)
Introduce CONFIG_XEN_PVHVM compile option
This patch introduce a CONFIG_XEN_PVHVM compile time option to enable/disable Xen PV on HVM support. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
-rw-r--r--arch/x86/kernel/cpu/hypervisor.c2
-rw-r--r--arch/x86/xen/Kconfig5
-rw-r--r--arch/x86/xen/enlighten.c2
-rw-r--r--arch/x86/xen/mmu.c2
-rw-r--r--arch/x86/xen/platform-pci-unplug.c2
-rw-r--r--arch/x86/xen/time.c3
-rw-r--r--drivers/xen/Kconfig2
-rw-r--r--drivers/xen/events.c4
8 files changed, 19 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index 5bccedcb9121..8095f8611f8a 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -34,7 +34,7 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
{
&x86_hyper_vmware,
&x86_hyper_ms_hyperv,
-#ifdef CONFIG_XEN
+#ifdef CONFIG_XEN_PVHVM
&x86_hyper_xen_hvm,
#endif
};
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index b83e119fbeb0..68128a1b401a 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -13,6 +13,11 @@ config XEN
kernel to boot in a paravirtualized environment under the
Xen hypervisor.
+config XEN_PVHVM
+ def_bool y
+ depends on XEN
+ depends on X86_LOCAL_APIC
+
config XEN_MAX_DOMAIN_MEMORY
int "Maximum allowed size of a domain in gigabytes"
default 8 if X86_32
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 75b479a684fd..6f5345378abc 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1282,6 +1282,7 @@ void xen_hvm_init_shared_info(void)
}
}
+#ifdef CONFIG_XEN_PVHVM
static int __cpuinit xen_hvm_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
@@ -1338,3 +1339,4 @@ const __refconst struct hypervisor_x86 x86_hyper_xen_hvm = {
.init_platform = xen_hvm_guest_init,
};
EXPORT_SYMBOL(x86_hyper_xen_hvm);
+#endif
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 84648c1bf138..413b19b3d0fe 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1942,6 +1942,7 @@ void __init xen_init_mmu_ops(void)
pv_mmu_ops = xen_mmu_ops;
}
+#ifdef CONFIG_XEN_PVHVM
static void xen_hvm_exit_mmap(struct mm_struct *mm)
{
struct xen_hvm_pagetable_dying a;
@@ -1973,6 +1974,7 @@ void __init xen_hvm_init_mmu_ops(void)
if (is_pagetable_dying_supported())
pv_mmu_ops.exit_mmap = xen_hvm_exit_mmap;
}
+#endif
#ifdef CONFIG_XEN_DEBUG_FS
diff --git a/arch/x86/xen/platform-pci-unplug.c b/arch/x86/xen/platform-pci-unplug.c
index 2f7f3fb34777..554c002a1e1a 100644
--- a/arch/x86/xen/platform-pci-unplug.c
+++ b/arch/x86/xen/platform-pci-unplug.c
@@ -32,6 +32,7 @@
/* store the value of xen_emul_unplug after the unplug is done */
int xen_platform_pci_unplug;
EXPORT_SYMBOL_GPL(xen_platform_pci_unplug);
+#ifdef CONFIG_XEN_PVHVM
static int xen_emul_unplug;
static int __init check_platform_magic(void)
@@ -133,3 +134,4 @@ static int __init parse_xen_emul_unplug(char *arg)
return 0;
}
early_param("xen_emul_unplug", parse_xen_emul_unplug);
+#endif
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 4780e55886a5..2aab4a2b9100 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -516,6 +516,7 @@ __init void xen_init_time_ops(void)
x86_platform.set_wallclock = xen_set_wallclock;
}
+#ifdef CONFIG_XEN_PVHVM
static void xen_hvm_setup_cpu_clockevents(void)
{
int cpu = smp_processor_id();
@@ -544,4 +545,4 @@ __init void xen_hvm_init_time_ops(void)
x86_platform.get_wallclock = xen_get_wallclock;
x86_platform.set_wallclock = xen_set_wallclock;
}
-
+#endif
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 8f84b108b491..0a8826936639 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -64,7 +64,7 @@ config XEN_SYS_HYPERVISOR
config XEN_PLATFORM_PCI
tristate "xen platform pci device driver"
- depends on XEN
+ depends on XEN_PVHVM
default m
help
Driver for the Xen PCI Platform device: it is responsible for
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index b5a254e9aebe..5e1f34892dcc 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -973,6 +973,7 @@ int xen_set_callback_via(uint64_t via)
}
EXPORT_SYMBOL_GPL(xen_set_callback_via);
+#ifdef CONFIG_XEN_PVHVM
/* Vector callbacks are better than PCI interrupts to receive event
* channel notifications because we can receive vector callbacks on any
* vcpu and we don't need PCI support or APIC interactions. */
@@ -996,6 +997,9 @@ void xen_callback_vector(void)
alloc_intr_gate(XEN_HVM_EVTCHN_CALLBACK, xen_hvm_callback_vector);
}
}
+#else
+void xen_callback_vector(void) {}
+#endif
void __init xen_init_IRQ(void)
{