From nobody Fri Dec 19 14:03:01 2025 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AF1CD276031 for ; Fri, 10 Oct 2025 22:04:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760133862; cv=none; b=amij+HU4NkSlXqrD+j0zAPwvpsgCu9pIx7lWcR3HdsI0YP3du6QVc4MM4AFuXjKN6mDdgVrRqBkOMLNEJjp0d3rVlhelVFNKfaRDJ9WP4LzVCPR5ZrRc0pUWR+/bkw317m5gumbHvBJaWz4zoufL9m9iCfxv4OimjUPNshVdPcQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760133862; c=relaxed/simple; bh=fiWFhBmnXVNpJMyu1KdW1wPURNpipX/se+mCAmgbMfM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=GuBNRdiy7pbv3NzhYiofYSbgNXRItF/X4/9gpmOFtzRFX+qIVTJ6aAGERY25mK55jHGfWnSKWEztBNSdHHMXXoDI3UhZ09Fr2HRNoktKU04UfBEI6BZMvBFVVFG0G+CcCq1JTFk+eImEUSrJxI5xyEhDOW+AIMM5CZu62qWg0L8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=N7m6sw0K; arc=none smtp.client-ip=209.85.214.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="N7m6sw0K" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-28a5b8b12bbso107218815ad.2 for ; Fri, 10 Oct 2025 15:04:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1760133860; x=1760738660; darn=vger.kernel.org; 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=/zWlSX8DyUzRe9Li2JnpKDvY+0TGXw1UHSLvOrmpoc8=; b=N7m6sw0KjcZUWfbwGFHIoCDDBl2w7JZZ/9C4cvcFpjbkwK09zJZMj0orpL6rh5v+hg aWea7+mhfJvkoyuiCdEufWU1NbYdcn1o+87IQMK6ay32PZCx/fC+Oe4Xt9lRJCRLOcwc nZnikXzPlN/vhNwef5tFu0sFoqyk6McZk+kfNkY3ONknF50bncq0KiK/bwVRQbAKo3/b +crLc4tqbdnSYYHYJlhjHIKHclYtjPTR/U/L0v1ZXQk2rjkyeXNttWbEF0opHyNAhOa5 LBHL7E7sg3liEWzOVKnvl32cDGC3jfp8CxoRysQT9VDnyhdqSe59bPoO99FTvexk776+ /Big== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760133860; x=1760738660; 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=/zWlSX8DyUzRe9Li2JnpKDvY+0TGXw1UHSLvOrmpoc8=; b=u1pqftCkjOQK1H3R3Ez457rNqpWRfHOW7ivhcWwrUICEVmnFK1dBdgnEDU4Se8eW/A e5OZpvQtHgctfWQU5zbJnZOZ46fNyxRBCKsc4gU+zAn4GU4q98lJTOP4yalDzt5jluaf KQQvt+cTXSil5FFPjBA79k4Y/mvh9j4qwp8fqtWFNtDS8tENxlUKntdUsCvxcXv6XFo5 kqWDWMIueRApuSQ6xu+hNdN50gjDWr7EqGI5NbWUIx+mwwkQuc72iBsD0b2w1VSekevA Z1D2/OtV99VzLMJc7k7Lzx5Ab1vUkIN730a+uFr/drcfuGSY8uJa59XELV33z57PdCtN UwBQ== X-Gm-Message-State: AOJu0YwMoO0osHZVwFSPkqivN+34LInXGY57EGSviOYDp4Zmoe6n+CD0 YZy7AaP6iV1sXEDrXE9W1V7Sn9xLStjSljm1zlc/r0UTRoA3PADXdBmAMOh3qd0+aCeOZDxT/J9 sMpnYcQ== X-Google-Smtp-Source: AGHT+IEHOxGS/S94kHuqCPOuRdy7tjdj1GXwqOLUftwCbLIcV6PzVsh1I3YOlDMqz5KOmjUZSEt2hxkw5TE= X-Received: from pjto23.prod.google.com ([2002:a17:90a:c717:b0:33b:51fe:1a8b]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:1806:b0:32d:db5b:7636 with SMTP id 98e67ed59e1d1-33b513cdaf5mr18862070a91.27.1760133860154; Fri, 10 Oct 2025 15:04:20 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 10 Oct 2025 15:04:02 -0700 In-Reply-To: <20251010220403.987927-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251010220403.987927-1-seanjc@google.com> X-Mailer: git-send-email 2.51.0.740.g6adb054d12-goog Message-ID: <20251010220403.987927-5-seanjc@google.com> Subject: [RFC PATCH 4/4] KVM: Bury kvm_{en,dis}able_virtualization() in kvm_main.c once more From: Sean Christopherson To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "Kirill A. Shutemov" , Sean Christopherson , Paolo Bonzini Cc: linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, kvm@vger.kernel.org, Chao Gao , Dan Williams , Xin Li , Kai Huang , Adrian Hunter Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Now that TDX handles doing VMXON without KVM's involvement, bury the top-level APIs to enable and disable virtualization back in kvm_main.c. No functional change intended. Signed-off-by: Sean Christopherson --- include/linux/kvm_host.h | 8 -------- virt/kvm/kvm_main.c | 17 +++++++++++++---- 2 files changed, 13 insertions(+), 12 deletions(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c4f18e6b1604..8eb1b0908e1e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -2595,12 +2595,4 @@ long kvm_arch_vcpu_pre_fault_memory(struct kvm_vcpu = *vcpu, struct kvm_pre_fault_memory *range); #endif =20 -#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING -int kvm_enable_virtualization(void); -void kvm_disable_virtualization(void); -#else -static inline int kvm_enable_virtualization(void) { return 0; } -static inline void kvm_disable_virtualization(void) { } -#endif - #endif diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 4b61889289f0..6bec30b6b6c1 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1111,6 +1111,9 @@ static inline struct kvm_io_bus *kvm_get_bus_for_dest= ruction(struct kvm *kvm, !refcount_read(&kvm->users_count)); } =20 +static int kvm_enable_virtualization(void); +static void kvm_disable_virtualization(void); + static struct kvm *kvm_create_vm(unsigned long type, const char *fdname) { struct kvm *kvm =3D kvm_arch_alloc_vm(); @@ -5678,7 +5681,7 @@ static struct syscore_ops kvm_syscore_ops =3D { .shutdown =3D kvm_shutdown, }; =20 -int kvm_enable_virtualization(void) +static int kvm_enable_virtualization(void) { int r; =20 @@ -5723,9 +5726,8 @@ int kvm_enable_virtualization(void) --kvm_usage_count; return r; } -EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_enable_virtualization); =20 -void kvm_disable_virtualization(void) +static void kvm_disable_virtualization(void) { guard(mutex)(&kvm_usage_lock); =20 @@ -5736,7 +5738,6 @@ void kvm_disable_virtualization(void) cpuhp_remove_state(CPUHP_AP_KVM_ONLINE); kvm_arch_disable_virtualization(); } -EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_disable_virtualization); =20 static int kvm_init_virtualization(void) { @@ -5752,6 +5753,14 @@ static void kvm_uninit_virtualization(void) kvm_disable_virtualization(); } #else /* CONFIG_KVM_GENERIC_HARDWARE_ENABLING */ +static int kvm_enable_virtualization(void) +{ + return 0; +} +static void kvm_disable_virtualization(void) +{ + +} static int kvm_init_virtualization(void) { return 0; --=20 2.51.0.740.g6adb054d12-goog