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| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2016-05-12 09:18:13 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-05-30 14:03:59 +1000 |
| commit | 4c055ab54fae39b6329c57bcb5334d59b920463e (patch) | |
| tree | d1bb4c50138f6283bda97737937c32733f943414 /include/sysemu/kvm.h | |
| parent | 9dfeca7c6b1d3a8f36531bbbac0322a9907bcd86 (diff) | |
| download | qemu-4c055ab54fae39b6329c57bcb5334d59b920463e.tar.gz qemu-4c055ab54fae39b6329c57bcb5334d59b920463e.tar.bz2 qemu-4c055ab54fae39b6329c57bcb5334d59b920463e.zip | |
cpu: Reclaim vCPU objects
In order to deal well with the kvm vcpus (which can not be removed without any
protection), we do not close KVM vcpu fd, just record and mark it as stopped
into a list, so that we can reuse it for the appending cpu hot-add request if
possible. It is also the approach that kvm guys suggested:
https://www.mail-archive.com/kvm@vger.kernel.org/msg102839.html
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
[- Explicit CPU_REMOVE() from qemu_kvm/tcg_destroy_vcpu()
isn't needed as it is done from cpu_exec_exit()
- Use iothread mutex instead of global mutex during
destroy
- Don't cleanup vCPU object from vCPU thread context
but leave it to the callers (device_add/device_del)]
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'include/sysemu/kvm.h')
| -rw-r--r-- | include/sysemu/kvm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index f357ccde91..65569ed438 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -216,6 +216,7 @@ int kvm_has_intx_set_mask(void); int kvm_init_vcpu(CPUState *cpu); int kvm_cpu_exec(CPUState *cpu); +int kvm_destroy_vcpu(CPUState *cpu); #ifdef NEED_CPU_H #include "cpu.h" |