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Subject[PATCH v2 14/21] x86/xen: split suspend.c for PV and PVHVM guests
Date
Slit the code in suspend.c into suspend_pv.c and suspend_hvm.c.

Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
arch/x86/xen/Makefile | 3 ++-
arch/x86/xen/suspend.c | 54 ----------------------------------------------
arch/x86/xen/suspend_hvm.c | 22 +++++++++++++++++++
arch/x86/xen/suspend_pv.c | 44 +++++++++++++++++++++++++++++++++++++
arch/x86/xen/xen-ops.h | 13 +++++++++++
5 files changed, 81 insertions(+), 55 deletions(-)
create mode 100644 arch/x86/xen/suspend_hvm.c
create mode 100644 arch/x86/xen/suspend_pv.c

diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index 8da1ca9..cf8d6c5 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -15,7 +15,8 @@ obj-y := enlighten.o setup.o multicalls.o mmu.o irq.o \
grant-table.o suspend.o platform-pci-unplug.o \
p2m.o apic.o pmu.o enlighten_pv.o mmu_pv.o

-obj-$(CONFIG_XEN_PVHVM) += enlighten_hvm.o mmu_hvm.o
+obj-$(CONFIG_XEN_PVHVM) += enlighten_hvm.o mmu_hvm.o suspend_hvm.o
+obj-$(CONFIG_XEN_PV) += suspend_pv.o
obj-$(CONFIG_XEN_PVH) += enlighten_pvh.o

obj-$(CONFIG_EVENT_TRACING) += trace.o
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 7f664c4..d6b1680 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -14,60 +14,6 @@
#include "mmu.h"
#include "pmu.h"

-static void xen_pv_pre_suspend(void)
-{
- xen_mm_pin_all();
-
- xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
- xen_start_info->console.domU.mfn =
- mfn_to_pfn(xen_start_info->console.domU.mfn);
-
- BUG_ON(!irqs_disabled());
-
- HYPERVISOR_shared_info = &xen_dummy_shared_info;
- if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
- __pte_ma(0), 0))
- BUG();
-}
-
-static void xen_hvm_post_suspend(int suspend_cancelled)
-{
-#ifdef CONFIG_XEN_PVHVM
- int cpu;
- if (!suspend_cancelled)
- xen_hvm_init_shared_info();
- xen_callback_vector();
- xen_unplug_emulated_devices();
- if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
- for_each_online_cpu(cpu) {
- xen_setup_runstate_info(cpu);
- }
- }
-#endif
-}
-
-static void xen_pv_post_suspend(int suspend_cancelled)
-{
- xen_build_mfn_list_list();
-
- xen_setup_shared_info();
-
- if (suspend_cancelled) {
- xen_start_info->store_mfn =
- pfn_to_mfn(xen_start_info->store_mfn);
- xen_start_info->console.domU.mfn =
- pfn_to_mfn(xen_start_info->console.domU.mfn);
- } else {
-#ifdef CONFIG_SMP
- BUG_ON(xen_cpu_initialized_map == NULL);
- cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
-#endif
- xen_vcpu_restore();
- }
-
- xen_mm_unpin_all();
-}
-
void xen_arch_pre_suspend(void)
{
if (xen_pv_domain())
diff --git a/arch/x86/xen/suspend_hvm.c b/arch/x86/xen/suspend_hvm.c
new file mode 100644
index 0000000..01afcad
--- /dev/null
+++ b/arch/x86/xen/suspend_hvm.c
@@ -0,0 +1,22 @@
+#include <linux/types.h>
+
+#include <xen/xen.h>
+#include <xen/features.h>
+#include <xen/interface/features.h>
+
+#include "xen-ops.h"
+
+void xen_hvm_post_suspend(int suspend_cancelled)
+{
+ int cpu;
+
+ if (!suspend_cancelled)
+ xen_hvm_init_shared_info();
+ xen_callback_vector();
+ xen_unplug_emulated_devices();
+ if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
+ for_each_online_cpu(cpu) {
+ xen_setup_runstate_info(cpu);
+ }
+ }
+}
diff --git a/arch/x86/xen/suspend_pv.c b/arch/x86/xen/suspend_pv.c
new file mode 100644
index 0000000..496decca
--- /dev/null
+++ b/arch/x86/xen/suspend_pv.c
@@ -0,0 +1,44 @@
+#include <linux/types.h>
+
+#include <asm/xen/hypercall.h>
+#include <asm/xen/page.h>
+
+#include "xen-ops.h"
+
+void xen_pv_pre_suspend(void)
+{
+ xen_mm_pin_all();
+
+ xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
+ xen_start_info->console.domU.mfn =
+ mfn_to_pfn(xen_start_info->console.domU.mfn);
+
+ BUG_ON(!irqs_disabled());
+
+ HYPERVISOR_shared_info = &xen_dummy_shared_info;
+ if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
+ __pte_ma(0), 0))
+ BUG();
+}
+
+void xen_pv_post_suspend(int suspend_cancelled)
+{
+ xen_build_mfn_list_list();
+
+ xen_setup_shared_info();
+
+ if (suspend_cancelled) {
+ xen_start_info->store_mfn =
+ pfn_to_mfn(xen_start_info->store_mfn);
+ xen_start_info->console.domU.mfn =
+ pfn_to_mfn(xen_start_info->console.domU.mfn);
+ } else {
+#ifdef CONFIG_SMP
+ BUG_ON(xen_cpu_initialized_map == NULL);
+ cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
+#endif
+ xen_vcpu_restore();
+ }
+
+ xen_mm_unpin_all();
+}
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 7baeb04..ed7ada2 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -153,5 +153,18 @@ extern int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),

extern void xen_reboot(int reason);
extern void xen_emergency_restart(void);
+#ifdef CONFIG_XEN_PV
+extern void xen_pv_pre_suspend(void);
+extern void xen_pv_post_suspend(int suspend_cancelled);
+#else
+static inline void xen_pv_pre_suspend(void) {}
+static inline void xen_pv_post_suspend(int suspend_cancelled) {}
+#endif
+
+#ifdef CONFIG_XEN_PVHVM
+extern void xen_hvm_post_suspend(int suspend_cancelled);
+#else
+static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
+#endif

#endif /* XEN_OPS_H */
--
2.9.3
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