oss: Unbreak mmaping the ability to mmap oss fd on Linux

[qemu] / kvm-all.c

diff --git a/kvm-all.c b/kvm-all.c
index 9a822ed..15c30d4 100644 (file)
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -57,6 +57,7 @@ struct KVMState
     KVMSlot slots[32];
     int fd;
     int vmfd;
+    int regs_modified;
     int coalesced_mmio;
     int broken_set_mem_region;
     int migration_log;
@@ -318,7 +319,6 @@ int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
     KVMDirtyLog d;
     KVMSlot *mem;
     int ret = 0;
-    int r;
 
     d.dirty_bitmap = NULL;
     while (start_addr < end_addr) {
@@ -327,11 +327,6 @@ int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
             break;
         }
 
-        /* We didn't activate dirty logging? Don't care then. */
-        if(!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES)) {
-            continue;
-        }
-
         size = ((mem->memory_size >> TARGET_PAGE_BITS) + 7) / 8;
         if (!d.dirty_bitmap) {
             d.dirty_bitmap = qemu_malloc(size);
@@ -343,8 +338,7 @@ int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
 
         d.slot = mem->slot;
 
-        r = kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d);
-        if (r == -EINVAL) {
+        if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) {
             dprintf("ioctl failed %d\n", errno);
             ret = -1;
             break;
@@ -358,10 +352,6 @@ int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
 
             if (test_le_bit(nr, bitmap)) {
                 cpu_physical_memory_set_dirty(addr);
-            } else if (r < 0) {
-                /* When our KVM implementation doesn't know about dirty logging
-                 * we can just assume it's always dirty and be fine. */
-                cpu_physical_memory_set_dirty(addr);
             }
         }
         start_addr = phys_addr;
@@ -587,6 +577,14 @@ static void kvm_run_coalesced_mmio(CPUState *env, struct kvm_run *run)
 #endif
 }
 
+void kvm_cpu_synchronize_state(CPUState *env)
+{
+    if (!env->kvm_state->regs_modified) {
+        kvm_arch_get_registers(env);
+        env->kvm_state->regs_modified = 1;
+    }
+}
+
 int kvm_cpu_exec(CPUState *env)
 {
     struct kvm_run *run = env->kvm_run;
@@ -601,6 +599,11 @@ int kvm_cpu_exec(CPUState *env)
             break;
         }
 
+        if (env->kvm_state->regs_modified) {
+            kvm_arch_put_registers(env);
+            env->kvm_state->regs_modified = 0;
+        }
+
         kvm_arch_pre_run(env, run);
         ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
         kvm_arch_post_run(env, run);