From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Wed, 9 May 2012 22:14:25 +0000 (-0300)
Subject: Switch SIG_IPI to SIGUSR1
X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~4107
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a7aae221b0ef3125dedbbfe49a3f758a21a73330;p=sdk%2Femulator%2Fqemu.git

Switch SIG_IPI to SIGUSR1

Use SIGUSR1 unconditionally as SIG_IPI. First, ucontext coroutines tend
to corrupt RT signal masks due to a 32-on-64-bit Linux kernel bug. And,
second, there appears to be no advantage in using RT signals for VCPU
kicking.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---

diff --git a/main-loop.h b/main-loop.h
index c06b8bc..dce1cd9 100644
--- a/main-loop.h
+++ b/main-loop.h
@@ -25,11 +25,7 @@
 #ifndef QEMU_MAIN_LOOP_H
 #define QEMU_MAIN_LOOP_H 1
 
-#ifdef SIGRTMIN
-#define SIG_IPI (SIGRTMIN+4)
-#else
 #define SIG_IPI SIGUSR1
-#endif
 
 /**
  * qemu_init_main_loop: Set up the process so that it can run the main loop.