From nobody Wed Oct 29 06:01:05 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1513139099531309.9379087263727; Tue, 12 Dec 2017 20:24:59 -0800 (PST) Received: from localhost ([::1]:33568 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eOyb8-0005SP-LK for importer@patchew.org; Tue, 12 Dec 2017 23:24:46 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47589) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eOyaF-0005A2-Fm for qemu-devel@nongnu.org; Tue, 12 Dec 2017 23:23:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eOyaB-0001Pc-3Q for qemu-devel@nongnu.org; Tue, 12 Dec 2017 23:23:51 -0500 Received: from ozlabs.ru ([107.173.13.209]:58814) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eOyaA-0001PM-UA for qemu-devel@nongnu.org; Tue, 12 Dec 2017 23:23:47 -0500 Received: from vpl1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 664CD3A60024; Tue, 12 Dec 2017 23:22:38 -0500 (EST) From: Alexey Kardashevskiy To: qemu-devel@nongnu.org Date: Wed, 13 Dec 2017 15:23:12 +1100 Message-Id: <20171213042312.8781-1-aik@ozlabs.ru> X-Mailer: git-send-email 2.11.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 107.173.13.209 Subject: [Qemu-devel] [PATCH qemu] kvm: Add kvm_set_user_memory tracepoint X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexey Kardashevskiy Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This adds a tracepoint to trace the KVM_SET_USER_MEMORY_REGION ioctl parameters which is quite useful for debugging VFIO memory regions being actually registered with KVM. Signed-off-by: Alexey Kardashevskiy --- accel/kvm/kvm-all.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index f290f48..b91fcb7 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -235,6 +235,7 @@ static int kvm_set_user_memory_region(KVMMemoryListener= *kml, KVMSlot *slot) { KVMState *s =3D kvm_state; struct kvm_userspace_memory_region mem; + int ret; =20 mem.slot =3D slot->slot | (kml->as_id << 16); mem.guest_phys_addr =3D slot->start_addr; @@ -248,7 +249,10 @@ static int kvm_set_user_memory_region(KVMMemoryListene= r *kml, KVMSlot *slot) kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); } mem.memory_size =3D slot->memory_size; - return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); + ret =3D kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); + trace_kvm_set_user_memory(mem.slot, mem.flags, mem.guest_phys_addr, + mem.memory_size, mem.userspace_addr, ret); + return ret; } =20 int kvm_destroy_vcpu(CPUState *cpu) --=20 2.11.0