From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: [PATCH 11/15] KVM: Add a special exit reason when exiting due to an interrupt Date: Sun, 11 Mar 2007 15:53:23 +0200 Message-ID: <11736212081609-git-send-email-avi@qumranet.com> References: <11736212072915-git-send-email-avi@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Andrew Morton , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Return-path: In-Reply-To: <11736212072915-git-send-email-avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org This is redundant, as we also return -EINTR from the ioctl, but it allows us to examine the exit_reason field on resume without seeing old data. Signed-off-by: Avi Kivity --- drivers/kvm/svm.c | 2 ++ drivers/kvm/vmx.c | 2 ++ include/linux/kvm.h | 3 ++- 3 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index b09928f..0311665 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -1619,12 +1619,14 @@ again: if (signal_pending(current)) { ++kvm_stat.signal_exits; post_kvm_run_save(vcpu, kvm_run); + kvm_run->exit_reason = KVM_EXIT_INTR; return -EINTR; } if (dm_request_for_irq_injection(vcpu, kvm_run)) { ++kvm_stat.request_irq_exits; post_kvm_run_save(vcpu, kvm_run); + kvm_run->exit_reason = KVM_EXIT_INTR; return -EINTR; } kvm_resched(vcpu); diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index ba7a98b..0d1c8cf 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1936,12 +1936,14 @@ again: if (signal_pending(current)) { ++kvm_stat.signal_exits; post_kvm_run_save(vcpu, kvm_run); + kvm_run->exit_reason = KVM_EXIT_INTR; return -EINTR; } if (dm_request_for_irq_injection(vcpu, kvm_run)) { ++kvm_stat.request_irq_exits; post_kvm_run_save(vcpu, kvm_run); + kvm_run->exit_reason = KVM_EXIT_INTR; return -EINTR; } diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 57f47ef..b3af92e 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -11,7 +11,7 @@ #include #include -#define KVM_API_VERSION 8 +#define KVM_API_VERSION 9 /* * Architectural interrupt line count, and the size of the bitmap needed @@ -45,6 +45,7 @@ enum kvm_exit_reason { KVM_EXIT_IRQ_WINDOW_OPEN = 7, KVM_EXIT_SHUTDOWN = 8, KVM_EXIT_FAIL_ENTRY = 9, + KVM_EXIT_INTR = 10, }; /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */ -- 1.5.0.2 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV