Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

This includes the atomic_ -> qatomic_ rename that touches many files and is
prone to conflicts.

# gpg: Signature made Wed 23 Sep 2020 17:08:43 BST
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  qemu/atomic.h: rename atomic_ to qatomic_
  tests: add test-fdmon-epoll
  fdmon-poll: reset npfd when upgrading to fdmon-epoll
  gitmodules: add qemu.org vbootrom submodule
  gitmodules: switch to qemu.org meson mirror
  gitmodules: switch to qemu.org qboot mirror
  docs/system: clarify deprecation schedule
  virtio-crypto: don't modify elem->in/out_sg
  virtio-blk: undo destructive iov_discard_*() operations
  util/iov: add iov_discard_undo()
  virtio: add vhost-user-fs-ccw device
  libvhost-user: handle endianness as mandated by the spec
  MAINTAINERS: add Stefan Hajnoczi as block/nvme.c maintainer

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

3 files changed, 11 insertions, 10 deletions

diff --git a/linux-user/hppa/cpu_loop.c b/linux-user/hppa/cpu_loop.c
index 9915456..d7e1ec7 100644
--- a/linux-user/hppa/cpu_loop.c
+++ b/linux-user/hppa/cpu_loop.c
@@ -39,7 +39,7 @@ static abi_ulong hppa_lws(CPUHPPAState *env)
         }
         old = tswap32(old);
         new = tswap32(new);
-        ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new);
+        ret = qatomic_cmpxchg((uint32_t *)g2h(addr), old, new);
         ret = tswap32(ret);
         break;
 
@@ -60,19 +60,19 @@ static abi_ulong hppa_lws(CPUHPPAState *env)
         case 0:
             old = *(uint8_t *)g2h(old);
             new = *(uint8_t *)g2h(new);
-            ret = atomic_cmpxchg((uint8_t *)g2h(addr), old, new);
+            ret = qatomic_cmpxchg((uint8_t *)g2h(addr), old, new);
             ret = ret != old;
             break;
         case 1:
             old = *(uint16_t *)g2h(old);
             new = *(uint16_t *)g2h(new);
-            ret = atomic_cmpxchg((uint16_t *)g2h(addr), old, new);
+            ret = qatomic_cmpxchg((uint16_t *)g2h(addr), old, new);
             ret = ret != old;
             break;
         case 2:
             old = *(uint32_t *)g2h(old);
             new = *(uint32_t *)g2h(new);
-            ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new);
+            ret = qatomic_cmpxchg((uint32_t *)g2h(addr), old, new);
             ret = ret != old;
             break;
         case 3:
@@ -81,7 +81,8 @@ static abi_ulong hppa_lws(CPUHPPAState *env)
                 o64 = *(uint64_t *)g2h(old);
                 n64 = *(uint64_t *)g2h(new);
 #ifdef CONFIG_ATOMIC64
-                r64 = atomic_cmpxchg__nocheck((uint64_t *)g2h(addr), o64, n64);
+                r64 = qatomic_cmpxchg__nocheck((uint64_t *)g2h(addr),
+                                               o64, n64);
                 ret = r64 != o64;
 #else
                 start_exclusive();
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index a69a0bd..941ca99 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -146,7 +146,7 @@ typedef struct TaskState {
     /* Nonzero if process_pending_signals() needs to do something (either
      * handle a pending signal or unblock signals).
      * This flag is written from a signal handler so should be accessed via
-     * the atomic_read() and atomic_set() functions. (It is not accessed
+     * the qatomic_read() and qatomic_set() functions. (It is not accessed
      * from multiple threads.)
      */
     int signal_pending;
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 8cf51ff..73de934 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -195,7 +195,7 @@ int block_signals(void)
     sigfillset(&set);
     sigprocmask(SIG_SETMASK, &set, 0);
 
-    return atomic_xchg(&ts->signal_pending, 1);
+    return qatomic_xchg(&ts->signal_pending, 1);
 }
 
 /* Wrapper for sigprocmask function
@@ -688,7 +688,7 @@ int queue_signal(CPUArchState *env, int sig, int si_type,
     ts->sync_signal.info = *info;
     ts->sync_signal.pending = sig;
     /* signal that a new signal is pending */
-    atomic_set(&ts->signal_pending, 1);
+    qatomic_set(&ts->signal_pending, 1);
     return 1; /* indicates that the signal was queued */
 }
 
@@ -1005,7 +1005,7 @@ void process_pending_signals(CPUArchState *cpu_env)
     sigset_t set;
     sigset_t *blocked_set;
 
-    while (atomic_read(&ts->signal_pending)) {
+    while (qatomic_read(&ts->signal_pending)) {
         /* FIXME: This is not threadsafe.  */
         sigfillset(&set);
         sigprocmask(SIG_SETMASK, &set, 0);
@@ -1049,7 +1049,7 @@ void process_pending_signals(CPUArchState *cpu_env)
          * of unblocking might cause us to take another host signal which
          * will set signal_pending again).
          */
-        atomic_set(&ts->signal_pending, 0);
+        qatomic_set(&ts->signal_pending, 0);
         ts->in_sigsuspend = 0;
         set = ts->signal_mask;
         sigdelset(&set, SIGSEGV);