Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* Fixes for SGX
* force_rcu notifiers

# gpg: Signature made Wed 10 Nov 2021 10:57:48 PM CET
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  sgx: Reset the vEPC regions during VM reboot
  numa: avoid crash with SGX and "info numa"
  accel/tcg: Register a force_rcu notifier
  rcu: Introduce force_rcu notifier
  target/i386: sgx: mark device not user creatable

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/accel/tcg/tcg-accel-ops-rr.c b/accel/tcg/tcg-accel-ops-rr.c
index a5fd26190e..bf59f53dbc 100644
--- a/accel/tcg/tcg-accel-ops-rr.c
+++ b/accel/tcg/tcg-accel-ops-rr.c
@@ -28,6 +28,7 @@
 #include "sysemu/tcg.h"
 #include "sysemu/replay.h"
 #include "qemu/main-loop.h"
+#include "qemu/notify.h"
 #include "qemu/guest-random.h"
 #include "exec/exec-all.h"
 
@@ -133,6 +134,11 @@ static void rr_deal_with_unplugged_cpus(void)
     }
 }
 
+static void rr_force_rcu(Notifier *notify, void *data)
+{
+    rr_kick_next_cpu();
+}
+
 /*
  * In the single-threaded case each vCPU is simulated in turn. If
  * there is more than a single vCPU we create a simple timer to kick
@@ -143,10 +149,13 @@ static void rr_deal_with_unplugged_cpus(void)
 
 static void *rr_cpu_thread_fn(void *arg)
 {
+    Notifier force_rcu;
     CPUState *cpu = arg;
 
     assert(tcg_enabled());
     rcu_register_thread();
+    force_rcu.notify = rr_force_rcu;
+    rcu_add_force_rcu_notifier(&force_rcu);
     tcg_register_thread();
 
     qemu_mutex_lock_iothread();
@@ -255,6 +264,7 @@ static void *rr_cpu_thread_fn(void *arg)
         rr_deal_with_unplugged_cpus();
     }
 
+    rcu_remove_force_rcu_notifier(&force_rcu);
     rcu_unregister_thread();
     return NULL;
 }