From nobody Sun Feb 8 08:46:37 2026 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 CD561C433FE for ; Wed, 2 Nov 2022 23:21:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231249AbiKBXV5 (ORCPT ); Wed, 2 Nov 2022 19:21:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231280AbiKBXU3 (ORCPT ); Wed, 2 Nov 2022 19:20:29 -0400 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4B186431 for ; Wed, 2 Nov 2022 16:19:49 -0700 (PDT) Received: by mail-pl1-x649.google.com with SMTP id e13-20020a17090301cd00b001871e6f8714so216891plh.14 for ; Wed, 02 Nov 2022 16:19:49 -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=s9AuxTlRjBrfjYkcaQi28he/RkCYbCa6yMT59uzOKa0=; b=ddAfxHTlEUHw0qawyyn7Bns3LOyks9re4MtMC6FAIFAvlDf6eK/nu/+/9Fi10x1R6n WWJsCNbWaFv5FoXY2JkfL2gPHfmH7n5Ig/c/8vgYFwan9v+I5VkTcY5cAcyMIsF0YYgl ayeymXyuzlb1ZK6RywTZFK6M2TrYNtbmp52NtBkrAW3CizVOcP2GK1YSKNk0hRzbGX/H t6V+7QqjJlqd98Pv08NBqx2q5El2vxmRcwGZXuIwYC0OoPXag/D+TlMulKYngdYVLuGi IcUk8i0bIt121WR3Ua8dNN2eN53mKcAGIC6t4monNq6evoAdLql3aLFHNiEvl7F6ATwg 1KbQ== 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=s9AuxTlRjBrfjYkcaQi28he/RkCYbCa6yMT59uzOKa0=; b=aQY9PITYwTyAstSESuRzncPG1QTQsxC+2oWcYZZkYX4Jlj2+3lV5MqMA6S7Fzs0fF5 KN511d9f4hvkhQ41Smv7qFGE0p+2di+oKykiMN7l3U+heR9DFlsv6O3Junvp6zdsvHro 3la4kA+STI/xKDNLOhluJh2lCuIR+seOOvO3hDWOSfNfpb3hM1txuWliQkbpRWvctB63 CJVgp0Eymm46C6R/wl0+H1Yr+gKwLcKpIvKMesVz9sZSqKKl4pXE1Zs8VQL/bKjMvwQT WbCmmG30IIoFfAlpkF+RlZ1ZnVYNEFtmN5qcZcXgHt4DWGnVHUv3jBRW2wNrqlxqLenq OCYQ== X-Gm-Message-State: ACrzQf34O0CAasg6NFbgvkS7fmQuKhWED7gIpMAhOIdKSX2AXO+0rFLF lWPTxs1XH7zWtFb5FhBXub0SlB228Lg= X-Google-Smtp-Source: AMsMyM4Aj3fLciSdgeuMbOdggWgonn7AFJaBAotEN5fF2aTBDAVACdmSaSGC1ByL/Xgyuk/Z8cG2B3zdT14= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:903:240a:b0:183:6555:7a89 with SMTP id e10-20020a170903240a00b0018365557a89mr27116619plo.68.1667431189462; Wed, 02 Nov 2022 16:19:49 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 2 Nov 2022 23:18:48 +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: <20221102231911.3107438-22-seanjc@google.com> Subject: [PATCH 21/44] KVM: MIPS: Register die notifier prior to kvm_init() 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-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Call kvm_init() only after _all_ setup is complete, as kvm_init() exposes /dev/kvm to userspace and thus allows userspace to create VMs (and call other ioctls). Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- arch/mips/kvm/mips.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index 75681281e2df..ae7a24342fdf 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -1640,16 +1640,17 @@ static int __init kvm_mips_init(void) if (ret) return ret; =20 - ret =3D kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); - - if (ret) - return ret; =20 if (boot_cpu_type() =3D=3D CPU_LOONGSON64) kvm_priority_to_irq =3D kvm_loongson3_priority_to_irq; =20 register_die_notifier(&kvm_mips_csr_die_notifier); =20 + ret =3D kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + if (ret) { + unregister_die_notifier(&kvm_mips_csr_die_notifier); + return ret; + } return 0; } =20 --=20 2.38.1.431.g37b22c650d-goog