Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

Mostly bugfixes and cleanups from qemu-devel.  Yet another small patch from
the record/replay series, and a few SCSI and i386 patches as well.

# gpg: Signature made Wed 14 Jan 2015 09:39:14 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream:
  cpus: consistently use QEMU_CLOCK_VIRTUAL_RT for icount_warp_rt timer
  qemu-timer: rename timer_init to timer_init_tl
  scsi: fix cancellation when I/O was completed but DMA was not.
  rules.mak: Fix module build
  hw/scsi/lsi53c895a: add support for additional diag / debug registers
  qemu-common.h: optimise muldiv64 if int128 is available
  target-i386: do not memcpy in and out of xmm_regs
  target-i386: fix movntsd on big-endian hosts
  vl.c: fix regression when reading memory size from config file
  vl: Don't silently change topology when all -smp options were set
  vl: fix max_cpus check
  vl: Avoid unnecessary 'if' nesting
  9pfs: changed to use event_notifier instead of qemu_pipe
  vl.c: fix regression when reading machine type from config file
  char: restore stdio echo on resume from suspend.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 7 insertions, 22 deletions

diff --git a/hw/9pfs/virtio-9p-coth.c b/hw/9pfs/virtio-9p-coth.c
index ae6cde8005..8185c533c0 100644
--- a/hw/9pfs/virtio-9p-coth.c
+++ b/hw/9pfs/virtio-9p-coth.c
@@ -14,6 +14,7 @@
 
 #include "fsdev/qemu-fsdev.h"
 #include "qemu/thread.h"
+#include "qemu/event_notifier.h"
 #include "block/coroutine.h"
 #include "virtio-9p-coth.h"
 
@@ -26,15 +27,11 @@ void co_run_in_worker_bh(void *opaque)
     g_thread_pool_push(v9fs_pool.pool, co, NULL);
 }
 
-static void v9fs_qemu_process_req_done(void *arg)
+static void v9fs_qemu_process_req_done(EventNotifier *e)
 {
-    char byte;
-    ssize_t len;
     Coroutine *co;
 
-    do {
-        len = read(v9fs_pool.rfd, &byte, sizeof(byte));
-    } while (len == -1 &&  errno == EINTR);
+    event_notifier_test_and_clear(e);
 
     while ((co = g_async_queue_try_pop(v9fs_pool.completed)) != NULL) {
         qemu_coroutine_enter(co, NULL);
@@ -43,22 +40,18 @@ static void v9fs_qemu_process_req_done(void *arg)
 
 static void v9fs_thread_routine(gpointer data, gpointer user_data)
 {
-    ssize_t len;
-    char byte = 0;
     Coroutine *co = data;
 
     qemu_coroutine_enter(co, NULL);
 
     g_async_queue_push(v9fs_pool.completed, co);
-    do {
-        len = write(v9fs_pool.wfd, &byte, sizeof(byte));
-    } while (len == -1 && errno == EINTR);
+
+    event_notifier_set(&v9fs_pool.e);
 }
 
 int v9fs_init_worker_threads(void)
 {
     int ret = 0;
-    int notifier_fds[2];
     V9fsThPool *p = &v9fs_pool;
     sigset_t set, oldset;
 
@@ -66,10 +59,6 @@ int v9fs_init_worker_threads(void)
     /* Leave signal handling to the iothread.  */
     pthread_sigmask(SIG_SETMASK, &set, &oldset);
 
-    if (qemu_pipe(notifier_fds) == -1) {
-        ret = -1;
-        goto err_out;
-    }
     p->pool = g_thread_pool_new(v9fs_thread_routine, p, -1, FALSE, NULL);
     if (!p->pool) {
         ret = -1;
@@ -84,13 +73,9 @@ int v9fs_init_worker_threads(void)
         ret = -1;
         goto err_out;
     }
-    p->rfd = notifier_fds[0];
-    p->wfd = notifier_fds[1];
-
-    fcntl(p->rfd, F_SETFL, O_NONBLOCK);
-    fcntl(p->wfd, F_SETFL, O_NONBLOCK);
+    event_notifier_init(&p->e, 0);
 
-    qemu_set_fd_handler(p->rfd, v9fs_qemu_process_req_done, NULL, NULL);
+    event_notifier_set_handler(&p->e, v9fs_qemu_process_req_done);
 err_out:
     pthread_sigmask(SIG_SETMASK, &oldset, NULL);
     return ret;