From patchwork Wed Nov 2 23:18:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13029215 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 BADAFC4332F for ; Wed, 2 Nov 2022 23:24:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231387AbiKBXYb (ORCPT ); Wed, 2 Nov 2022 19:24:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231326AbiKBXXy (ORCPT ); Wed, 2 Nov 2022 19:23:54 -0400 Received: from mail-pg1-x54a.google.com (mail-pg1-x54a.google.com [IPv6:2607:f8b0:4864:20::54a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70B09BC0D for ; Wed, 2 Nov 2022 16:20:16 -0700 (PDT) Received: by mail-pg1-x54a.google.com with SMTP id e125-20020a636983000000b0046ed15a8212so79595pgc.19 for ; Wed, 02 Nov 2022 16:20:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=dcXVHMPmodJgyjWSWzUUXYPY5IgSqzwbkOwCWMHEoLw=; b=OPMCatdO1d8dL+Ta8Py6rxwydwCiY6zCNCXIb+egUN7DrF+5aRQAdkSuE5LIETIlxg 0Xu5vf6/r2RvlVD4iPwtBSi99UeaHj7aM3+HXPcw2HDQ3PJiTzACg++YppAQSVFrXlbX 445lXkuRBueb2zaC++Qprbqu7U3tfRRmn8brlw2hji0dV80X6loBURwB99xjrgySZrY+ JKVDqIwyg7Uc9H75OQ5JSJ5+ZEwkliA75F0m2UzpP0JooJPxj9jKI/TjUoYSf5R0ENlU Tfi5fLmiuggsYA2KxI7KZkbk+jQJ4dmmmS2w7RXuC7D2A7bEXPHvjmHFsXPqV4OoFfix VIfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=dcXVHMPmodJgyjWSWzUUXYPY5IgSqzwbkOwCWMHEoLw=; b=al39+Rcguuzv1ZSzDg+QfT1GfWyhlngZYC0Pbbt2iPkRT82bvvDxCm++pe5jgJcK5S kl9fAUvMpGi9t7mY2h9Z+DDMmDxE0WU5f+9cTOo3ztqe90SvYRiXVZEj7Ew+s9Yghdvg mOBmXXmeSI31mgx1iQiAAxfCe7yeraLHErwCvWOPM5ziGALtI5RZ5BX4mn7Jk5jbKl0i BwnJHRLJzmkDCaAKOFviO4vkWEzvwp0kXpPIY6DIvzrU+6ZifC0zVDrmAIjQ490kHYdo f9d8bup+WiAjK1ClVB3kvOimehLUGYdcG8NimWrJv479Quiml3c5GiJwfi8bXaeq+sJ4 eJ8g== X-Gm-Message-State: ACrzQf0rEXq23h7yCVUtJWxtAOtQtZ/BX6leLx6mCsFFbBi8bVBsQ8zl CieyiHfWQAuG5yHYAccBLzsM2P6UGxY= X-Google-Smtp-Source: AMsMyM6kcll1bBJ/V+TtC0ABRP5ZMtZsbPePz3XyDhX5IOsFn05p1qBMSY73qSxElpChUue2jr1DdAtUr0w= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:aa7:8e89:0:b0:56c:636a:fa37 with SMTP id a9-20020aa78e89000000b0056c636afa37mr27413782pfr.83.1667431200240; Wed, 02 Nov 2022 16:20:00 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 2 Nov 2022 23:18:54 +0000 In-Reply-To: <20221102231911.3107438-1-seanjc@google.com> Mime-Version: 1.0 References: <20221102231911.3107438-1-seanjc@google.com> X-Mailer: git-send-email 2.38.1.431.g37b22c650d-goog Message-ID: <20221102231911.3107438-28-seanjc@google.com> Subject: [PATCH 27/44] KVM: Drop kvm_arch_{init,exit}() hooks From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Matthew Rosato , Eric Farman , Sean Christopherson , Vitaly Kuznetsov Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Atish Patra , David Hildenbrand , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Isaku Yamahata , Fabiano Rosas , Michael Ellerman , Chao Gao , Thomas Gleixner , Yuan Yao Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Drop kvm_arch_init() and kvm_arch_exit() now that all implementations are nops. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daudé Acked-by: Anup Patel Reviewed-by: Eric Farman # s390 --- arch/arm64/kvm/arm.c | 11 ----------- arch/mips/kvm/mips.c | 10 ---------- arch/powerpc/include/asm/kvm_host.h | 1 - arch/powerpc/kvm/powerpc.c | 5 ----- arch/riscv/kvm/main.c | 9 --------- arch/s390/kvm/kvm-s390.c | 10 ---------- arch/x86/kvm/x86.c | 10 ---------- include/linux/kvm_host.h | 3 --- virt/kvm/kvm_main.c | 19 ++----------------- 9 files changed, 2 insertions(+), 76 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 6e0061eac627..75c5125b0dd3 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -2284,17 +2284,6 @@ static __init int kvm_arm_init(void) return err; } -int kvm_arch_init(void *opaque) -{ - return 0; -} - -/* NOP: Compiling as a module not supported */ -void kvm_arch_exit(void) -{ - -} - static int __init early_kvm_mode_cfg(char *arg) { if (!arg) diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index ae7a24342fdf..3cade648827a 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -1010,16 +1010,6 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) return r; } -int kvm_arch_init(void *opaque) -{ - return 0; -} - -void kvm_arch_exit(void) -{ - -} - int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 5d2c3a487e73..0a80e80c7b9e 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -881,7 +881,6 @@ static inline void kvm_arch_sync_events(struct kvm *kvm) {} static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} -static inline void kvm_arch_exit(void) {} static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 36c27381a769..34278042ad27 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -2525,11 +2525,6 @@ void kvmppc_init_lpid(unsigned long nr_lpids_param) } EXPORT_SYMBOL_GPL(kvmppc_init_lpid); -int kvm_arch_init(void *opaque) -{ - return 0; -} - EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr); void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry) diff --git a/arch/riscv/kvm/main.c b/arch/riscv/kvm/main.c index cb063b8a9a0f..4710a6751687 100644 --- a/arch/riscv/kvm/main.c +++ b/arch/riscv/kvm/main.c @@ -65,15 +65,6 @@ void kvm_arch_hardware_disable(void) csr_write(CSR_HIDELEG, 0); } -int kvm_arch_init(void *opaque) -{ - return 0; -} - -void kvm_arch_exit(void) -{ -} - static int __init riscv_kvm_init(void) { const char *str; diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index f6ae845bc1c1..7c1c6d81b5d7 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -533,16 +533,6 @@ static void __kvm_s390_exit(void) debug_unregister(kvm_s390_dbf_uv); } -int kvm_arch_init(void *opaque) -{ - return 0; -} - -void kvm_arch_exit(void) -{ - -} - /* Section: device related */ long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 218707597bea..2b4530a33298 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9271,16 +9271,6 @@ static inline void kvm_ops_update(struct kvm_x86_init_ops *ops) kvm_pmu_ops_update(ops->pmu_ops); } -int kvm_arch_init(void *opaque) -{ - return 0; -} - -void kvm_arch_exit(void) -{ - -} - static int __kvm_x86_vendor_init(struct kvm_x86_init_ops *ops) { u64 host_pat; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 9b52bd40be56..6c2a28c4c684 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1423,9 +1423,6 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg); int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu); -int kvm_arch_init(void *opaque); -void kvm_arch_exit(void); - void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 27ce263a80e4..17c852cb6842 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -5833,20 +5833,8 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, int r; int cpu; - /* - * FIXME: Get rid of kvm_arch_init(), vendor code should call arch code - * directly. Note, kvm_arch_init() _must_ be called before anything - * else as x86 relies on checks buried in kvm_arch_init() to guard - * against multiple calls to kvm_init(). - */ - r = kvm_arch_init(opaque); - if (r) - return r; - - if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) { - r = -ENOMEM; - goto err_hw_enabled; - } + if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) + return -ENOMEM; c.ret = &r; c.opaque = opaque; @@ -5934,8 +5922,6 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, cpuhp_remove_state_nocalls(CPUHP_AP_KVM_STARTING); out_free_2: free_cpumask_var(cpus_hardware_enabled); -err_hw_enabled: - kvm_arch_exit(); return r; } EXPORT_SYMBOL_GPL(kvm_init); @@ -5963,7 +5949,6 @@ void kvm_exit(void) on_each_cpu(hardware_disable_nolock, NULL, 1); kvm_irqfd_exit(); free_cpumask_var(cpus_hardware_enabled); - kvm_arch_exit(); } EXPORT_SYMBOL_GPL(kvm_exit);