From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Introduce the Xen FV (Fully Virtualized) machine to Qemu, some more Xen
specific call will be added in further patches.
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 hw/pc.c | 19 +++++++++++++++++--
 hw/pc_piix.c | 17 +++++++++++++++++
 hw/xen.h | 4 ++++
 3 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/hw/pc.c b/hw/pc.c
index 6939c04..d7732d4 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -41,6 +41,7 @@
 #include "sysemu.h"
 #include "blockdev.h"
 #include "ui/qemu-spice.h"
+#include "xen.h"
 
 /* output Bochs bios info messages */
 //#define DEBUG_BIOS
@@ -918,7 +919,11 @@ static void pc_cpu_reset(void *opaque)
 CPUState *env = opaque;
 
 cpu_reset(env);
- env->halted = !cpu_is_bsp(env);
+ if (!xen_enabled()) {
+ env->halted = !cpu_is_bsp(env);
+ } else {
+ env->halted = 1;
+ }
 }
 
 static CPUState *pc_new_cpu(const char *cpu_model)
@@ -952,7 +957,12 @@ void pc_cpus_init(const char *cpu_model)
 #endif
 }
 
- for(i = 0; i < smp_cpus; i++) {
+ if (!xen_enabled()) {
+ for(i = 0; i < smp_cpus; i++) {
+ pc_new_cpu(cpu_model);
+ }
+ } else {
+ /* Xen require only one Qemu VCPU */
 pc_new_cpu(cpu_model);
 }
 }
@@ -980,6 +990,11 @@ void pc_memory_init(ram_addr_t ram_size,
 *above_4g_mem_size_p = above_4g_mem_size;
 *below_4g_mem_size_p = below_4g_mem_size;
 
+ if (xen_enabled()) {
+ /* Nothing to do for Xen */
+ return;
+ }
+
 linux_boot = (kernel_filename != NULL);
 
 /* allocate RAM */
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index b3ede89..6eff06e 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -37,6 +37,10 @@
 #include "sysbus.h"
 #include "arch_init.h"
 #include "blockdev.h"
+#include "xen.h"
+#ifdef CONFIG_XEN
+# include <xen/hvm/hvm_info_table.h>
+#endif
 
 #define MAX_IDE_BUS 2
 
@@ -391,6 +395,16 @@ static QEMUMachine isapc_machine = {
 .max_cpus = 1,
 };
 
+#ifdef CONFIG_XEN
+static QEMUMachine xenfv_machine = {
+ .name = "xenfv",
+ .desc = "Xen Fully-virtualized PC",
+ .init = pc_init_pci,
+ .max_cpus = HVM_MAX_VCPUS,
+ .default_machine_opts = "accel=xen",
+};
+#endif
+
 static void pc_machine_init(void)
 {
 qemu_register_machine(&pc_machine);
@@ -399,6 +413,9 @@ static void pc_machine_init(void)
 qemu_register_machine(&pc_machine_v0_11);
 qemu_register_machine(&pc_machine_v0_10);
 qemu_register_machine(&isapc_machine);
+#ifdef CONFIG_XEN
+ qemu_register_machine(&xenfv_machine);
+#endif
 }
 
 machine_init(pc_machine_init);
diff --git a/hw/xen.h b/hw/xen.h
index 1fefe3a..726360a 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -31,4 +31,8 @@ static inline int xen_enabled(void)
 
 int xen_init(void);
 
+#if defined(CONFIG_XEN) && CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
+# define HVM_MAX_VCPUS 32
+#endif
+
 #endif /* QEMU_HW_XEN_H */
-- 
1.7.2.3
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