x86/xen: add CONFIG_XEN_PV to Kconfig
All code to support Xen PV will get under this new option. For the
beginning, check for it in the common code.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index a77f18d..ce6fcc3 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -28,8 +28,10 @@
static const __initconst struct hypervisor_x86 * const hypervisors[] =
{
-#ifdef CONFIG_XEN
+#ifdef CONFIG_XEN_PV
&x86_hyper_xen_pv,
+#endif
+#ifdef CONFIG_XEN_PVHVM
&x86_hyper_xen_hvm,
#endif
&x86_hyper_vmware,
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 825a1e4..b6840bf 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -446,7 +446,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
task_thread_info(prev_p)->flags & _TIF_WORK_CTXSW_PREV))
__switch_to_xtra(prev_p, next_p, tss);
-#ifdef CONFIG_XEN
+#ifdef CONFIG_XEN_PV
/*
* On Xen PV, IOPL bits in pt_regs->flags have no effect, and
* current_pt_regs()->flags may not match the current task's
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 76b6dbd..5bb1434 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -6,7 +6,6 @@
bool "Xen guest support"
depends on PARAVIRT
select PARAVIRT_CLOCK
- select XEN_HAVE_PVMMU
select XEN_HAVE_VPMU
depends on X86_64 || (X86_32 && X86_PAE)
depends on X86_LOCAL_APIC && X86_TSC
@@ -15,18 +14,32 @@
kernel to boot in a paravirtualized environment under the
Xen hypervisor.
+config XEN_PV
+ bool "Xen PV guest support"
+ default y
+ depends on XEN
+ select XEN_HAVE_PVMMU
+ help
+ Support running as a Xen PV guest.
+
config XEN_DOM0
- def_bool y
- depends on XEN && PCI_XEN && SWIOTLB_XEN
+ bool "Xen PV Dom0 support"
+ default y
+ depends on XEN_PV && PCI_XEN && SWIOTLB_XEN
depends on X86_IO_APIC && ACPI && PCI
+ help
+ Support running as a Xen PV Dom0 guest.
config XEN_PVHVM
- def_bool y
+ bool "Xen PVHVM guest support"
+ default y
depends on XEN && PCI && X86_LOCAL_APIC
+ help
+ Support running as a Xen PVHVM guest.
config XEN_512GB
bool "Limit Xen pv-domain memory to 512GB"
- depends on XEN && X86_64
+ depends on XEN_PV && X86_64
default y
help
Limit paravirtualized user domains to 512GB of RAM.
