From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:55803) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZwTAd-0003sl-Qe for qemu-devel@nongnu.org; Wed, 11 Nov 2015 06:02:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZwT9w-0003YY-95 for qemu-devel@nongnu.org; Wed, 11 Nov 2015 06:02:31 -0500 Received: from mail-wm0-x235.google.com ([2a00:1450:400c:c09::235]:35210) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZwT9w-0003YT-2Z for qemu-devel@nongnu.org; Wed, 11 Nov 2015 06:01:48 -0500 Received: by wmdw130 with SMTP id w130so108028878wmd.0 for ; Wed, 11 Nov 2015 03:01:47 -0800 (PST) Sender: Paolo Bonzini References: <1446796969-8049-1-git-send-email-jasowang@redhat.com> <1446796969-8049-4-git-send-email-jasowang@redhat.com> From: Paolo Bonzini Message-ID: <56432011.5070500@redhat.com> Date: Wed, 11 Nov 2015 12:01:37 +0100 MIME-Version: 1.0 In-Reply-To: <1446796969-8049-4-git-send-email-jasowang@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH V3 3/6] KVM: add support for any length io eventfd List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jason Wang , mst@redhat.com, qemu-devel@nongnu.org Cc: cornelia.huck@de.ibm.com On 06/11/2015 09:02, Jason Wang wrote: > Signed-off-by: Jason Wang > --- > include/sysemu/kvm.h | 8 ++++++++ > kvm-all.c | 4 ++++ > kvm-stub.c | 1 + > 3 files changed, 13 insertions(+) > > diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h > index 4ac6176..b31f325 100644 > --- a/include/sysemu/kvm.h > +++ b/include/sysemu/kvm.h > @@ -53,6 +53,7 @@ extern bool kvm_gsi_routing_allowed; > extern bool kvm_gsi_direct_mapping; > extern bool kvm_readonly_mem_allowed; > extern bool kvm_direct_msi_allowed; > +extern bool kvm_ioeventfd_any_length_allowed; > > #if defined CONFIG_KVM || !defined NEED_CPU_H > #define kvm_enabled() (kvm_allowed) > @@ -153,6 +154,12 @@ extern bool kvm_direct_msi_allowed; > */ > #define kvm_direct_msi_enabled() (kvm_direct_msi_allowed) > > +/** > + * kvm_ioeventfd_any_length_enabled: > + * Returns: true if KVM allows any length io eventfd. > + */ > +#define kvm_ioeventfd_any_length_enabled() (kvm_ioeventfd_any_length_allowed) > + > #else > #define kvm_enabled() (0) > #define kvm_irqchip_in_kernel() (false) > @@ -166,6 +173,7 @@ extern bool kvm_direct_msi_allowed; > #define kvm_gsi_direct_mapping() (false) > #define kvm_readonly_mem_enabled() (false) > #define kvm_direct_msi_enabled() (false) > +#define kvm_ioeventfd_any_length_enabled() (false) > #endif > > struct kvm_run; > diff --git a/kvm-all.c b/kvm-all.c > index 1bc1273..f4e2cf0 100644 > --- a/kvm-all.c > +++ b/kvm-all.c > @@ -109,6 +109,7 @@ bool kvm_allowed; > bool kvm_readonly_mem_allowed; > bool kvm_vm_attributes_allowed; > bool kvm_direct_msi_allowed; > +bool kvm_ioeventfd_any_length_allowed; > > static const KVMCapabilityInfo kvm_required_capabilites[] = { > KVM_CAP_INFO(USER_MEMORY), > @@ -1612,6 +1613,9 @@ static int kvm_init(MachineState *ms) > kvm_vm_attributes_allowed = > (kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES) > 0); > > + kvm_ioeventfd_any_length_allowed = > + (kvm_check_extension(s, KVM_CAP_IOEVENTFD_ANY_LENGTH) > 0); > + > ret = kvm_arch_init(ms, s); > if (ret < 0) { > goto err; > diff --git a/kvm-stub.c b/kvm-stub.c > index a5051f7..dc97a5e 100644 > --- a/kvm-stub.c > +++ b/kvm-stub.c > @@ -30,6 +30,7 @@ bool kvm_gsi_routing_allowed; > bool kvm_gsi_direct_mapping; > bool kvm_allowed; > bool kvm_readonly_mem_allowed; > +bool kvm_ioeventfd_any_length_allowed; > > int kvm_init_vcpu(CPUState *cpu) > { > Acked-by: Paolo Bonzini