From patchwork Tue Nov 29 21:36:14 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Guest stop notification Date: Tue, 29 Nov 2011 11:36:14 -0000 From: Eric B Munson X-Patchwork-Id: 128343 Message-Id: <1322602574-27072-1-git-send-email-emunson@mgebm.net> To: qemu-devel@nongnu.org Cc: ryanh@linux.vnet.ibm.com, aliguori@us.ibm.com, kvm@vger.kernel.org, mtosatti@redhat.com, linux-kernel@vger.kernel.org, Eric B Munson , avi@redhat.com Often when a guest is stopped from the qemu console, it will report spurious soft lockup warnings on resume. There are kernel patches being discussed that will give the host the ability to tell the guest that it is being stopped and should ignore the soft lockup warning that generates. Signed-off-by: Eric B Munson Cc: ryanh@linux.vnet.ibm.com Cc: aliguori@us.ibm.com Cc: mtosatti@redhat.com Cc: avi@redhat.com Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Anthony Liguori --- target-i386/kvm.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 5bfc21f..defd364 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -336,12 +336,18 @@ static int kvm_inject_mce_oldstyle(CPUState *env) return 0; } +static void kvm_put_guest_paused(CPUState *penv) +{ + kvm_vcpu_ioctl(penv, KVM_GUEST_PAUSED, 0); +} + static void cpu_update_state(void *opaque, int running, RunState state) { CPUState *env = opaque; if (running) { env->tsc_valid = false; + kvm_put_guest_paused(env); } }