Imported Debian patch 1.5.0-2013.06+git74+20130802+ef1b0ae-3linaroraring1HEADmaster

1 files changed, 84 insertions, 81 deletions

diff --git a/kvm-all.c b/kvm-all.c
index 04ec2d5..8222729 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -33,6 +33,7 @@
 #include "exec/memory.h"
 #include "exec/address-spaces.h"
 #include "qemu/event_notifier.h"
+#include "trace.h"
 
 /* This check must be after config-host.h is included */
 #ifdef CONFIG_EVENTFD
@@ -109,6 +110,7 @@ bool kvm_async_interrupts_allowed;
 bool kvm_irqfds_allowed;
 bool kvm_msi_via_irqfd_allowed;
 bool kvm_gsi_routing_allowed;
+bool kvm_allowed;
 
 static const KVMCapabilityInfo kvm_required_capabilites[] = {
     KVM_CAP_INFO(USER_MEMORY),
@@ -500,6 +502,66 @@ int kvm_check_extension(KVMState *s, unsigned int extension)
     return ret;
 }
 
+static int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val,
+                                  bool assign, uint32_t size, bool datamatch)
+{
+    int ret;
+    struct kvm_ioeventfd iofd;
+
+    iofd.datamatch = datamatch ? val : 0;
+    iofd.addr = addr;
+    iofd.len = size;
+    iofd.flags = 0;
+    iofd.fd = fd;
+
+    if (!kvm_enabled()) {
+        return -ENOSYS;
+    }
+
+    if (datamatch) {
+        iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH;
+    }
+    if (!assign) {
+        iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
+    }
+
+    ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd);
+
+    if (ret < 0) {
+        return -errno;
+    }
+
+    return 0;
+}
+
+static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val,
+                                 bool assign, uint32_t size, bool datamatch)
+{
+    struct kvm_ioeventfd kick = {
+        .datamatch = datamatch ? val : 0,
+        .addr = addr,
+        .flags = KVM_IOEVENTFD_FLAG_PIO,
+        .len = size,
+        .fd = fd,
+    };
+    int r;
+    if (!kvm_enabled()) {
+        return -ENOSYS;
+    }
+    if (datamatch) {
+        kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH;
+    }
+    if (!assign) {
+        kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
+    }
+    r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
+    if (r < 0) {
+        return r;
+    }
+    return 0;
+}
+
+
 static int kvm_check_many_ioeventfds(void)
 {
     /* Userspace can use ioeventfd for io notification.  This requires a host
@@ -517,7 +579,7 @@ static int kvm_check_many_ioeventfds(void)
         if (ioeventfds[i] < 0) {
             break;
         }
-        ret = kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, true);
+        ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true);
         if (ret < 0) {
             close(ioeventfds[i]);
             break;
@@ -528,7 +590,7 @@ static int kvm_check_many_ioeventfds(void)
     ret = i == ARRAY_SIZE(ioeventfds);
 
     while (i-- > 0) {
-        kvm_set_ioeventfd_pio_word(ioeventfds[i], 0, i, false);
+        kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true);
         close(ioeventfds[i]);
     }
     return ret;
@@ -748,10 +810,8 @@ static void kvm_mem_ioeventfd_add(MemoryListener *listener,
     int fd = event_notifier_get_fd(e);
     int r;
 
-    assert(match_data && section->size <= 8);
-
     r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
-                               data, true, section->size);
+                               data, true, section->size, match_data);
     if (r < 0) {
         abort();
     }
@@ -766,7 +826,7 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
     int r;
 
     r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
-                               data, false, section->size);
+                               data, false, section->size, match_data);
     if (r < 0) {
         abort();
     }
@@ -780,10 +840,8 @@ static void kvm_io_ioeventfd_add(MemoryListener *listener,
     int fd = event_notifier_get_fd(e);
     int r;
 
-    assert(match_data && section->size == 2);
-
-    r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space,
-                                   data, true);
+    r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
+                              data, true, section->size, match_data);
     if (r < 0) {
         abort();
     }
@@ -798,8 +856,8 @@ static void kvm_io_ioeventfd_del(MemoryListener *listener,
     int fd = event_notifier_get_fd(e);
     int r;
 
-    r = kvm_set_ioeventfd_pio_word(fd, section->offset_within_address_space,
-                                   data, false);
+    r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
+                              data, false, section->size, match_data);
     if (r < 0) {
         abort();
     }
@@ -826,11 +884,9 @@ static MemoryListener kvm_io_listener = {
     .priority = 10,
 };
 
-static void kvm_handle_interrupt(CPUArchState *env, int mask)
+static void kvm_handle_interrupt(CPUState *cpu, int mask)
 {
-    CPUState *cpu = ENV_GET_CPU(env);
-
-    env->interrupt_request |= mask;
+    cpu->interrupt_request |= mask;
 
     if (!qemu_cpu_is_self(cpu)) {
         qemu_cpu_kick(cpu);
@@ -1512,18 +1568,14 @@ void kvm_cpu_synchronize_state(CPUArchState *env)
     }
 }
 
-void kvm_cpu_synchronize_post_reset(CPUArchState *env)
+void kvm_cpu_synchronize_post_reset(CPUState *cpu)
 {
-    CPUState *cpu = ENV_GET_CPU(env);
-
     kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE);
     cpu->kvm_vcpu_dirty = false;
 }
 
-void kvm_cpu_synchronize_post_init(CPUArchState *env)
+void kvm_cpu_synchronize_post_init(CPUState *cpu)
 {
-    CPUState *cpu = ENV_GET_CPU(env);
-
     kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE);
     cpu->kvm_vcpu_dirty = false;
 }
@@ -1537,7 +1589,7 @@ int kvm_cpu_exec(CPUArchState *env)
     DPRINTF("kvm_cpu_exec()\n");
 
     if (kvm_arch_process_async_events(cpu)) {
-        env->exit_request = 0;
+        cpu->exit_request = 0;
         return EXCP_HLT;
     }
 
@@ -1548,7 +1600,7 @@ int kvm_cpu_exec(CPUArchState *env)
         }
 
         kvm_arch_pre_run(cpu, run);
-        if (env->exit_request) {
+        if (cpu->exit_request) {
             DPRINTF("interrupt exit requested\n");
             /*
              * KVM requires us to reenter the kernel after IO exits to complete
@@ -1575,6 +1627,7 @@ int kvm_cpu_exec(CPUArchState *env)
             abort();
         }
 
+        trace_kvm_run_exit(cpu->cpu_index, run->exit_reason);
         switch (run->exit_reason) {
         case KVM_EXIT_IO:
             DPRINTF("handle_io\n");
@@ -1622,7 +1675,7 @@ int kvm_cpu_exec(CPUArchState *env)
         vm_stop(RUN_STATE_INTERNAL_ERROR);
     }
 
-    env->exit_request = 0;
+    cpu->exit_request = 0;
     return ret;
 }
 
@@ -1636,6 +1689,7 @@ int kvm_ioctl(KVMState *s, int type, ...)
     arg = va_arg(ap, void *);
     va_end(ap);
 
+    trace_kvm_ioctl(type, arg);
     ret = ioctl(s->fd, type, arg);
     if (ret == -1) {
         ret = -errno;
@@ -1653,6 +1707,7 @@ int kvm_vm_ioctl(KVMState *s, int type, ...)
     arg = va_arg(ap, void *);
     va_end(ap);
 
+    trace_kvm_vm_ioctl(type, arg);
     ret = ioctl(s->vmfd, type, arg);
     if (ret == -1) {
         ret = -errno;
@@ -1670,6 +1725,7 @@ int kvm_vcpu_ioctl(CPUState *cpu, int type, ...)
     arg = va_arg(ap, void *);
     va_end(ap);
 
+    trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg);
     ret = ioctl(cpu->kvm_fd, type, arg);
     if (ret == -1) {
         ret = -errno;
@@ -1734,17 +1790,17 @@ int kvm_has_intx_set_mask(void)
     return kvm_state->intx_set_mask;
 }
 
-void *kvm_vmalloc(ram_addr_t size)
+void *kvm_ram_alloc(ram_addr_t size)
 {
 #ifdef TARGET_S390X
     void *mem;
 
-    mem = kvm_arch_vmalloc(size);
+    mem = kvm_arch_ram_alloc(size);
     if (mem) {
         return mem;
     }
 #endif
-    return qemu_vmalloc(size);
+    return qemu_anon_ram_alloc(size);
 }
 
 void kvm_setup_guest_memory(void *start, size_t size)
@@ -1973,59 +2029,6 @@ int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset)
 
     return r;
 }
-
-int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val, bool assign,
-                           uint32_t size)
-{
-    int ret;
-    struct kvm_ioeventfd iofd;
-
-    iofd.datamatch = val;
-    iofd.addr = addr;
-    iofd.len = size;
-    iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH;
-    iofd.fd = fd;
-
-    if (!kvm_enabled()) {
-        return -ENOSYS;
-    }
-
-    if (!assign) {
-        iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
-    }
-
-    ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd);
-
-    if (ret < 0) {
-        return -errno;
-    }
-
-    return 0;
-}
-
-int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign)
-{
-    struct kvm_ioeventfd kick = {
-        .datamatch = val,
-        .addr = addr,
-        .len = 2,
-        .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO,
-        .fd = fd,
-    };
-    int r;
-    if (!kvm_enabled()) {
-        return -ENOSYS;
-    }
-    if (!assign) {
-        kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
-    }
-    r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
-    if (r < 0) {
-        return r;
-    }
-    return 0;
-}
-
 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
 {
     return kvm_arch_on_sigbus_vcpu(cpu, code, addr);