[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 04/37] Trigger exit from cpu_exec_all on pending IO
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] [PATCH 04/37] Trigger exit from cpu_exec_all on pending IO events |
Date: |
Mon, 14 Feb 2011 13:22:33 -0200 |
From: Jan Kiszka <address@hidden>
Except for timer events, we currently do not leave the loop over all
VCPUs if an IO event was filed. That may cause unexpected IO latencies
under !CONFIG_IOTHREAD in SMP scenarios. Fix it by setting the global
exit_request which breaks the loop.
Signed-off-by: Jan Kiszka <address@hidden>
Signed-off-by: Marcelo Tosatti <address@hidden>
---
cpus.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/cpus.c b/cpus.c
index f8a88e3..0abc009 100644
--- a/cpus.c
+++ b/cpus.c
@@ -307,6 +307,7 @@ void qemu_notify_event(void)
if (next_cpu && env != next_cpu) {
cpu_exit(next_cpu);
}
+ exit_request = 1;
}
void qemu_mutex_lock_iothread(void) {}
--
1.7.4
- [Qemu-devel] [PATCH 20/37] kvm: Remove static return code of kvm_handle_io, (continued)
- [Qemu-devel] [PATCH 20/37] kvm: Remove static return code of kvm_handle_io, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 35/37] cirrus: Remove obsolete kvm.h include, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 28/37] Move debug exception handling out of cpu_exec, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 07/37] kvm: Report proper error on GET_VCPU_MMAP_SIZE failures, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 11/37] Refactor signal setup functions in cpus.c, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 23/37] Refactor kvm&tcg function names in cpus.c, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 14/37] kvm: Call qemu_kvm_eat_signals also under !CONFIG_IOTHREAD, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 15/37] Set up signalfd under !CONFIG_IOTHREAD, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 02/37] Stop current VCPU on synchronous reset requests, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 22/37] kvm: make tsc stable over migration and machine start, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 04/37] Trigger exit from cpu_exec_all on pending IO events,
Marcelo Tosatti <=
- [Qemu-devel] [PATCH 34/37] Introduce log_start/log_stop in CPUPhysMemoryClient, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 16/37] kvm: Fix race between timer signals and vcpu entry under !IOTHREAD, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 17/37] kvm: Add MCE signal support for !CONFIG_IOTHREAD, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 37/37] kvm: x86: Introduce kvmclock device to save/restore its state, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 30/37] kvm: x86: Prepare VCPU loop for in-kernel irqchip, Marcelo Tosatti, 2011/02/14
- [Qemu-devel] [PATCH 31/37] kvm: Drop return values from kvm_arch_pre/post_run, Marcelo Tosatti, 2011/02/14
- Re: [Qemu-devel] [PATCH 00/37] [PULL] qemu-kvm.git uq/master queue, Anthony Liguori, 2011/02/14