From nobody Wed Dec 17 13:54:14 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09A21C61D9D for ; Sat, 25 Nov 2023 08:19:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231753AbjKYISw (ORCPT ); Sat, 25 Nov 2023 03:18:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229503AbjKYISs (ORCPT ); Sat, 25 Nov 2023 03:18:48 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD523B7 for ; Sat, 25 Nov 2023 00:18:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700900333; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=7gWnKow7mmEdO4f39vqBRl04PZThOfmSepuYQVktBy4=; b=C0MYdLZF+lm3vCMOMwZdg4uIBTyMmT6w3ZOWd8xu5aARMbaHrd3kgB5mop4E776U/1WMgR w3XRewCf3AqmFqcd+N/Vqpwu6GzXsUddMiKyz0lGE2TaPHpQDxjF+lsK6zFrTfkZPKqw6V fDvIq8DHz/obDAcNbTMT3awetGh/tHY= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-292-n9Qe_U-mMWWK-hI_hA54Ug-1; Sat, 25 Nov 2023 03:18:51 -0500 X-MC-Unique: n9Qe_U-mMWWK-hI_hA54Ug-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 792C43810B33; Sat, 25 Nov 2023 08:18:51 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 603EB1C060B0; Sat, 25 Nov 2023 08:18:51 +0000 (UTC) From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: [PATCH] KVM: remove CONFIG_HAVE_KVM_EVENTFD Date: Sat, 25 Nov 2023 03:18:50 -0500 Message-Id: <20231125081850.1388059-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" virt/kvm/eventfd.c is compiled unconditionally, meaning that the ioeventfds member of struct kvm is accessed unconditionally. CONFIG_HAVE_KVM_EVENTFD therefore must be defined for KVM common code to compile successfully, remove it. Signed-off-by: Paolo Bonzini --- arch/arm64/kvm/Kconfig | 1 - arch/loongarch/kvm/Kconfig | 1 - arch/mips/kvm/Kconfig | 1 - arch/powerpc/kvm/Kconfig | 1 - arch/riscv/kvm/Kconfig | 1 - arch/s390/kvm/Kconfig | 1 - arch/x86/kvm/Kconfig | 1 - include/linux/kvm_host.h | 30 +----------------------------- virt/kvm/Kconfig | 5 +---- 9 files changed, 2 insertions(+), 40 deletions(-) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 83c1e09be42e..5d9b68b5a0b3 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -29,7 +29,6 @@ menuconfig KVM select KVM_GENERIC_DIRTYLOG_READ_PROTECT select KVM_XFER_TO_GUEST_WORK select KVM_VFIO - select HAVE_KVM_EVENTFD select HAVE_KVM_IRQFD select HAVE_KVM_DIRTY_RING_ACQ_REL select NEED_KVM_DIRTY_RING_WITH_BITMAP diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig index fda425babfb2..de19b9d9a444 100644 --- a/arch/loongarch/kvm/Kconfig +++ b/arch/loongarch/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM depends on AS_HAS_LVZ_EXTENSION depends on HAVE_KVM select HAVE_KVM_DIRTY_RING_ACQ_REL - select HAVE_KVM_EVENTFD select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_GENERIC_DIRTYLOG_READ_PROTECT select KVM_GENERIC_HARDWARE_ENABLING diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig index a8cdba75f98d..c7fc176fffc3 100644 --- a/arch/mips/kvm/Kconfig +++ b/arch/mips/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM select EXPORT_UASM select PREEMPT_NOTIFIERS select KVM_GENERIC_DIRTYLOG_READ_PROTECT - select HAVE_KVM_EVENTFD select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_MMIO select MMU_NOTIFIER diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 902611954200..8a3d08559f11 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -20,7 +20,6 @@ if VIRTUALIZATION config KVM bool select PREEMPT_NOTIFIERS - select HAVE_KVM_EVENTFD select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_VFIO select IRQ_BYPASS_MANAGER diff --git a/arch/riscv/kvm/Kconfig b/arch/riscv/kvm/Kconfig index dfc237d7875b..642f8d95289b 100644 --- a/arch/riscv/kvm/Kconfig +++ b/arch/riscv/kvm/Kconfig @@ -20,7 +20,6 @@ if VIRTUALIZATION config KVM tristate "Kernel-based Virtual Machine (KVM) support (EXPERIMENTAL)" depends on RISCV_SBI && MMU - select HAVE_KVM_EVENTFD select HAVE_KVM_IRQCHIP select HAVE_KVM_IRQFD select HAVE_KVM_IRQ_ROUTING diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig index 45fdf2a9b2e3..ed567b858535 100644 --- a/arch/s390/kvm/Kconfig +++ b/arch/s390/kvm/Kconfig @@ -23,7 +23,6 @@ config KVM select PREEMPT_NOTIFIERS select HAVE_KVM_CPU_RELAX_INTERCEPT select HAVE_KVM_VCPU_ASYNC_IOCTL - select HAVE_KVM_EVENTFD select KVM_ASYNC_PF select KVM_ASYNC_PF_SYNC select HAVE_KVM_IRQCHIP diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 950c12868d30..2efda4fc6a21 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -33,7 +33,6 @@ config KVM select IRQ_BYPASS_MANAGER select HAVE_KVM_IRQ_BYPASS select HAVE_KVM_IRQ_ROUTING - select HAVE_KVM_EVENTFD select KVM_ASYNC_PF select USER_RETURN_NOTIFIER select KVM_MMIO diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 4944136efaa2..b043202dd0b4 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -753,7 +753,6 @@ struct kvm { struct list_head vm_list; struct mutex lock; struct kvm_io_bus __rcu *buses[KVM_NR_BUSES]; -#ifdef CONFIG_HAVE_KVM_EVENTFD struct { spinlock_t lock; struct list_head items; @@ -762,7 +761,6 @@ struct kvm { struct mutex resampler_lock; } irqfds; struct list_head ioeventfds; -#endif struct kvm_vm_stat stat; struct kvm_arch arch; refcount_t users_count; @@ -2013,8 +2011,6 @@ static inline void kvm_free_irq_routing(struct kvm *k= vm) {} =20 int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); =20 -#ifdef CONFIG_HAVE_KVM_EVENTFD - void kvm_eventfd_init(struct kvm *kvm); int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); =20 @@ -2039,31 +2035,7 @@ static inline bool kvm_notify_irqfd_resampler(struct= kvm *kvm, { return false; } -#endif - -#else - -static inline void kvm_eventfd_init(struct kvm *kvm) {} - -static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) -{ - return -EINVAL; -} - -static inline void kvm_irqfd_release(struct kvm *kvm) {} - -#ifdef CONFIG_HAVE_KVM_IRQCHIP -static inline void kvm_irq_routing_update(struct kvm *kvm) -{ -} -#endif - -static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *arg= s) -{ - return -ENOSYS; -} - -#endif /* CONFIG_HAVE_KVM_EVENTFD */ +#endif /* CONFIG_HAVE_KVM_IRQFD */ =20 void kvm_arch_irq_routing_update(struct kvm *kvm); =20 diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index 484d0873061c..18b5a8fb491b 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -3,6 +3,7 @@ =20 config HAVE_KVM bool + select EVENTFD =20 config HAVE_KVM_PFNCACHE bool @@ -39,10 +40,6 @@ config NEED_KVM_DIRTY_RING_WITH_BITMAP bool depends on HAVE_KVM_DIRTY_RING =20 -config HAVE_KVM_EVENTFD - bool - select EVENTFD - config KVM_MMIO bool =20 --=20 2.39.1