Merge branch 'master' of /home/nchip/public_html/qemu into garage-push

[qemu] / kvm-all.c

diff --git a/kvm-all.c b/kvm-all.c
index f4851c0..b24d876 100644 (file)
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -22,6 +22,7 @@
 
 #include "qemu-common.h"
 #include "sysemu.h"
+#include "hw/hw.h"
 #include "gdbstub.h"
 #include "kvm.h"
 
@@ -180,6 +181,26 @@ err:
     return ret;
 }
 
+int kvm_put_mp_state(CPUState *env)
+{
+    struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
+
+    return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
+}
+
+int kvm_get_mp_state(CPUState *env)
+{
+    struct kvm_mp_state mp_state;
+    int ret;
+
+    ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state);
+    if (ret < 0) {
+        return ret;
+    }
+    env->mp_state = mp_state.mp_state;
+    return 0;
+}
+
 int kvm_sync_vcpus(void)
 {
     CPUState *env;
@@ -272,47 +293,58 @@ int kvm_set_migration_log(int enable)
  * @start_add: start of logged region.
  * @end_addr: end of logged region.
  */
-void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
-                                    target_phys_addr_t end_addr)
+int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
+                                   target_phys_addr_t end_addr)
 {
     KVMState *s = kvm_state;
-    KVMDirtyLog d;
-    KVMSlot *mem = kvm_lookup_matching_slot(s, start_addr, end_addr);
-    unsigned long alloc_size;
+    unsigned long size, allocated_size = 0;
+    target_phys_addr_t phys_addr;
     ram_addr_t addr;
-    target_phys_addr_t phys_addr = start_addr;
+    KVMDirtyLog d;
+    KVMSlot *mem;
+    int ret = 0;
 
-    dprintf("sync addr: " TARGET_FMT_lx " into %lx\n", start_addr,
-            mem->phys_offset);
-    if (mem == NULL) {
-            fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-"
-                    TARGET_FMT_plx "\n", __func__, phys_addr, end_addr - 1);
-            return;
-    }
+    d.dirty_bitmap = NULL;
+    while (start_addr < end_addr) {
+        mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr);
+        if (mem == NULL) {
+            break;
+        }
+
+        size = ((mem->memory_size >> TARGET_PAGE_BITS) + 7) / 8;
+        if (!d.dirty_bitmap) {
+            d.dirty_bitmap = qemu_malloc(size);
+        } else if (size > allocated_size) {
+            d.dirty_bitmap = qemu_realloc(d.dirty_bitmap, size);
+        }
+        allocated_size = size;
+        memset(d.dirty_bitmap, 0, allocated_size);
 
-    alloc_size = mem->memory_size >> TARGET_PAGE_BITS / sizeof(d.dirty_bitmap);
-    d.dirty_bitmap = qemu_mallocz(alloc_size);
+        d.slot = mem->slot;
 
-    d.slot = mem->slot;
-    dprintf("slot %d, phys_addr %llx, uaddr: %llx\n",
-            d.slot, mem->start_addr, mem->phys_offset);
+        if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) {
+            dprintf("ioctl failed %d\n", errno);
+            ret = -1;
+            break;
+        }
 
-    if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) {
-        dprintf("ioctl failed %d\n", errno);
-        goto out;
-    }
+        for (phys_addr = mem->start_addr, addr = mem->phys_offset;
+             phys_addr < mem->start_addr + mem->memory_size;
+             phys_addr += TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) {
+            unsigned long *bitmap = (unsigned long *)d.dirty_bitmap;
+            unsigned nr = (phys_addr - mem->start_addr) >> TARGET_PAGE_BITS;
+            unsigned word = nr / (sizeof(*bitmap) * 8);
+            unsigned bit = nr % (sizeof(*bitmap) * 8);
 
-    phys_addr = start_addr;
-    for (addr = mem->phys_offset; phys_addr < end_addr; phys_addr+= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) {
-        unsigned long *bitmap = (unsigned long *)d.dirty_bitmap;
-        unsigned nr = (phys_addr - start_addr) >> TARGET_PAGE_BITS;
-        unsigned word = nr / (sizeof(*bitmap) * 8);
-        unsigned bit = nr % (sizeof(*bitmap) * 8);
-        if ((bitmap[word] >> bit) & 1)
-            cpu_physical_memory_set_dirty(addr);
+            if ((bitmap[word] >> bit) & 1) {
+                cpu_physical_memory_set_dirty(addr);
+            }
+        }
+        start_addr = phys_addr;
     }
-out:
     qemu_free(d.dirty_bitmap);
+
+    return ret;
 }
 
 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
@@ -365,8 +397,16 @@ int kvm_check_extension(KVMState *s, unsigned int extension)
     return ret;
 }
 
+static void kvm_reset_vcpus(void *opaque)
+{
+    kvm_sync_vcpus();
+}
+
 int kvm_init(int smp_cpus)
 {
+    static const char upgrade_note[] =
+        "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
+        "(see http://sourceforge.net/projects/kvm).\n";
     KVMState *s;
     int ret;
     int i;
@@ -417,7 +457,8 @@ int kvm_init(int smp_cpus)
      */
     if (!kvm_check_extension(s, KVM_CAP_USER_MEMORY)) {
         ret = -EINVAL;
-        fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n");
+        fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n%s",
+                upgrade_note);
         goto err;
     }
 
@@ -428,8 +469,8 @@ int kvm_init(int smp_cpus)
         ret = -EINVAL;
 
         fprintf(stderr,
-                "KVM kernel module broken (DESTROY_MEMORY_REGION)\n"
-                "Please upgrade to at least kvm-81.\n");
+                "KVM kernel module broken (DESTROY_MEMORY_REGION).\n%s",
+                upgrade_note);
         goto err;
     }
 
@@ -451,6 +492,8 @@ int kvm_init(int smp_cpus)
     if (ret < 0)
         goto err;
 
+    qemu_register_reset(kvm_reset_vcpus, INT_MAX, NULL);
+
     kvm_state = s;
 
     return 0;