Revert "vfio/pci-quirks.c: Disable stolen memory for igd VFIO"

[mirror_qemu.git] / translate-all.c

diff --git a/translate-all.c b/translate-all.c
index 9bac061c9b4e85b179eeee7380b1a3c07dc8f264..b3ee876526a814458ae6293f46c618df27e2ae41 100644 (file)
--- a/translate-all.c
+++ b/translate-all.c
@@ -57,6 +57,7 @@
 #include "qemu/timer.h"
 #include "qemu/main-loop.h"
 #include "exec/log.h"
+#include "sysemu/cpus.h"
 
 /* #define DEBUG_TB_INVALIDATE */
 /* #define DEBUG_TB_FLUSH */
@@ -333,6 +334,19 @@ bool cpu_restore_state(CPUState *cpu, uintptr_t retaddr)
     TranslationBlock *tb;
     bool r = false;
 
+    /* A retaddr of zero is invalid so we really shouldn't have ended
+     * up here. The target code has likely forgotten to check retaddr
+     * != 0 before attempting to restore state. We return early to
+     * avoid blowing up on a recursive tb_lock(). The target must have
+     * previously survived a failed cpu_restore_state because
+     * tb_find_pc(0) would have failed anyway. It still should be
+     * fixed though.
+     */
+
+    if (!retaddr) {
+        return r;
+    }
+
     tb_lock();
     tb = tb_find_pc(retaddr);
     if (tb) {
@@ -1930,7 +1944,7 @@ void cpu_interrupt(CPUState *cpu, int mask)
 {
     g_assert(qemu_mutex_iothread_locked());
     cpu->interrupt_request |= mask;
-    cpu->tcg_exit_req = 1;
+    cpu->icount_decr.u16.high = -1;
 }
 
 /*