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[Qemu-devel] [PATCH v2 19/24] Introduce VCPU self-signaling service
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [PATCH v2 19/24] Introduce VCPU self-signaling service |
Date: |
Tue, 1 Feb 2011 22:15:59 +0100 |
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>
---
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 63d9943..220c8c8 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -287,6 +287,7 @@ 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 */
--
1.7.1
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, (continued)
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, Jan Kiszka, 2011/02/28
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, Jan Kiszka, 2011/02/28
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, Avi Kivity, 2011/02/28
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, Avi Kivity, 2011/02/28
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, Jan Kiszka, 2011/02/28
- [Qemu-devel] Re: [PATCH v2 13/24] kvm: Set up signal mask also for !CONFIG_IOTHREAD, Avi Kivity, 2011/02/28
[Qemu-devel] [PATCH v2 14/24] kvm: Refactor qemu_kvm_eat_signals, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 16/24] Set up signalfd under !CONFIG_IOTHREAD, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 20/24] kvm: Unconditionally reenter kernel after IO exits, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 08/24] kvm: Report proper error on GET_VCPU_MMAP_SIZE failures, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 19/24] Introduce VCPU self-signaling service,
Jan Kiszka <=
[Qemu-devel] [PATCH v2 05/24] Trigger exit from cpu_exec_all on pending IO events, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 02/24] Prevent abortion on multiple VCPU kicks, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 06/24] Leave inner main_loop faster on pending requests, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 10/24] kvm: Handle kvm_init_vcpu errors, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 09/24] kvm: Drop redundant kvm_enabled from kvm_cpu_thread_fn, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 24/24] Fix a few coding style violations in cpus.c, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 15/24] kvm: Call qemu_kvm_eat_signals also under !CONFIG_IOTHREAD, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 03/24] Stop current VCPU on synchronous reset requests, Jan Kiszka, 2011/02/01
[Qemu-devel] [PATCH v2 12/24] Refactor signal setup functions in cpus.c, Jan Kiszka, 2011/02/01
[Qemu-devel] Re: [PATCH v2 00/24] [uq/master] Patch queue, part II, Marcelo Tosatti, 2011/02/04