Mailing List Archive

From: Anthony PERARD <anthony.perard@citrix.com>

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@citrix.com>
---
hw/pc_piix.c | 41 +++++++++++++++++++++++++++++++++++++++--
hw/xen.h | 6 ++++++
xen-all.c | 24 ++++++++++++++++++++++++
3 files changed, 69 insertions(+), 2 deletions(-)

diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 23a6bfb..aba3d58 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -38,6 +38,10 @@
#include "arch_init.h"
#include "blockdev.h"
#include "smbus.h"
+#include "xen.h"
+#ifdef CONFIG_XEN
+# include <xen/hvm/hvm_info_table.h>
+#endif

#define MAX_IDE_BUS 2

@@ -101,8 +105,10 @@ static void pc_init1(ram_addr_t ram_size,
}

/* allocate ram and load rom/bios */
- pc_memory_init(kernel_filename, kernel_cmdline, initrd_filename,
- below_4g_mem_size, above_4g_mem_size);
+ if (!xen_enabled()) {
+ pc_memory_init(kernel_filename, kernel_cmdline, initrd_filename,
+ below_4g_mem_size, above_4g_mem_size);
+ }

cpu_irq = pc_allocate_cpu_irq();
i8259 = i8259_init(cpu_irq[0]);
@@ -221,6 +227,24 @@ static void pc_init_isa(ram_addr_t ram_size,
initrd_filename, cpu_model, 0, 1);
}

+#ifdef CONFIG_XEN
+static void pc_xen_hvm_init(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename,
+ const char *kernel_cmdline,
+ const char *initrd_filename,
+ const char *cpu_model)
+{
+ if (xen_hvm_init() != 0) {
+ hw_error("xen hardware virtual machine initialisation failed");
+ }
+ pc_init_pci_no_kvmclock(ram_size, boot_device,
+ kernel_filename, kernel_cmdline,
+ initrd_filename, cpu_model);
+ xen_vcpu_init();
+}
+#endif
+
static QEMUMachine pc_machine = {
.name = "pc-0.14",
.alias = "pc",
@@ -385,6 +409,16 @@ static QEMUMachine isapc_machine = {
.max_cpus = 1,
};

+#ifdef CONFIG_XEN
+static QEMUMachine xenfv_machine = {
+ .name = "xenfv",
+ .desc = "Xen Fully-virtualized PC",
+ .init = pc_xen_hvm_init,
+ .max_cpus = HVM_MAX_VCPUS,
+ .default_machine_opts = "accel=xen",
+};
+#endif
+
static void pc_machine_init(void)
{
qemu_register_machine(&pc_machine);
@@ -393,6 +427,9 @@ 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..bb4dcb5 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -30,5 +30,11 @@ static inline int xen_enabled(void)
}

int xen_init(void);
+int xen_hvm_init(void);
+void xen_vcpu_init(void);
+
+#if defined(CONFIG_XEN) && CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
+# define HVM_MAX_VCPUS 32
+#endif

#endif /* QEMU_HW_XEN_H */
diff --git a/xen-all.c b/xen-all.c
index e2872f9..0b984b2 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -9,6 +9,25 @@
#include "hw/xen_common.h"
#include "hw/xen_backend.h"

+/* VCPU Operations, MMIO, IO ring ... */
+
+static void xen_reset_vcpu(void *opaque)
+{
+ CPUState *env = opaque;
+
+ env->halted = 1;
+}
+
+void xen_vcpu_init(void)
+{
+ CPUState *first_cpu;
+
+ if ((first_cpu = qemu_get_cpu(0))) {
+ qemu_register_reset(xen_reset_vcpu, first_cpu);
+ xen_reset_vcpu(first_cpu);
+ }
+}
+
/* Initialise Xen */

int xen_init(void)
@@ -21,3 +40,8 @@ int xen_init(void)

return 0;
}
+
+int xen_hvm_init(void)
+{
+ return 0;
+}
--
1.7.2.5


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