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[Qemu-devel] [PATCH 18/23] Introduce VCPU self-signaling service
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] [PATCH 18/23] Introduce VCPU self-signaling service |
Date: |
Fri, 4 Feb 2011 13:47:21 -0200 |
From: Jan Kiszka <address@hidden>
Introduce qemu_cpu_kick_self to send SIG_IPI to the calling VCPU
context. First user will be kvm.
Signed-off-by: Jan Kiszka <address@hidden>
Signed-off-by: Marcelo Tosatti <address@hidden>
---
cpus.c | 21 +++++++++++++++++++++
qemu-common.h | 1 +
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/cpus.c b/cpus.c
index c4c5914..9c50a34 100644
--- a/cpus.c
+++ b/cpus.c
@@ -537,6 +537,17 @@ void qemu_cpu_kick(void *env)
return;
}
+void qemu_cpu_kick_self(void)
+{
+#ifndef _WIN32
+ assert(cpu_single_env);
+
+ raise(SIG_IPI);
+#else
+ abort();
+#endif
+}
+
void qemu_notify_event(void)
{
CPUState *env = cpu_single_env;
@@ -835,6 +846,16 @@ void qemu_cpu_kick(void *_env)
}
}
+void qemu_cpu_kick_self(void)
+{
+ assert(cpu_single_env);
+
+ if (!cpu_single_env->thread_kicked) {
+ qemu_thread_signal(cpu_single_env->thread, SIG_IPI);
+ cpu_single_env->thread_kicked = true;
+ }
+}
+
int qemu_cpu_self(void *_env)
{
CPUState *env = _env;
diff --git a/qemu-common.h b/qemu-common.h
index c7ff280..a4d9c21 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -288,6 +288,7 @@ void qemu_notify_event(void);
/* Unblock cpu */
void qemu_cpu_kick(void *env);
+void qemu_cpu_kick_self(void);
int qemu_cpu_self(void *env);
/* work queue */
--
1.7.2.3
- [Qemu-devel] [PATCH 00/23] [PULL] qemu-kvm.git uq/master queue, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 19/23] kvm: Unconditionally reenter kernel after IO exits, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 18/23] Introduce VCPU self-signaling service,
Marcelo Tosatti <=
- [Qemu-devel] [PATCH 07/23] kvm: Report proper error on GET_VCPU_MMAP_SIZE failures, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 23/23] kvm: make tsc stable over migration and machine start, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 13/23] kvm: Refactor qemu_kvm_eat_signals, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 21/23] kvm: Leave kvm_cpu_exec directly after KVM_EXIT_SHUTDOWN, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 22/23] x86: Fix MCA broadcast parameters for TCG case, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 08/23] kvm: Drop redundant kvm_enabled from kvm_cpu_thread_fn, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 16/23] kvm: Fix race between timer signals and vcpu entry under !IOTHREAD, Marcelo Tosatti, 2011/02/04
- [Qemu-devel] [PATCH 02/23] Stop current VCPU on synchronous reset requests, Marcelo Tosatti, 2011/02/04