From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony PERARD Subject: [PATCH] xen: Fix BUFIOREQ evtchn init for a stubdom. Date: Tue, 26 Jun 2012 11:45:24 +0100 Message-ID: <1340707524-27665-1-git-send-email-anthony.perard@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Xen Devel Cc: Anthony PERARD , Ian Campbell , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org This is a missing part from the previous patch that add the BUFIOREQ_EVTCHN parameter. This patch changes the ownership of the buifioreq event channel to the stubdom (when HVM_PARAM_DM_DOMAIN is set within the stubdom). This fix the initialization of QEMU inside the stubdomain. Signed-off-by: Anthony PERARD --- xen/arch/x86/hvm/hvm.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c index e0d495d..9ff1ded 100644 --- a/xen/arch/x86/hvm/hvm.c +++ b/xen/arch/x86/hvm/hvm.c @@ -3788,6 +3788,22 @@ long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE(void) arg) /* xchg() ensures that only we free_xen_event_channel() */ old_port = xchg(&v->arch.hvm_vcpu.xen_port, new_port); free_xen_event_channel(v, old_port); + + if ( v->vcpu_id == 0 ) + { + new_port = alloc_unbound_xen_event_channel( + v, a.value, NULL); + if ( new_port < 0 ) + { + rc = new_port; + break; + } + old_port = xchg( + &v->domain->arch.hvm_domain.params[HVM_PARAM_BUFIOREQ_EVTCHN], + new_port); + free_xen_event_channel(v, old_port); + } + spin_lock(&iorp->lock); if ( iorp->va != NULL ) get_ioreq(v)->vp_eport = v->arch.hvm_vcpu.xen_port; -- Anthony PERARD