From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAAFFC433EF for ; Tue, 12 Oct 2021 04:37:01 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 81DA16108F for ; Tue, 12 Oct 2021 04:37:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 81DA16108F Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 334F54B08F; Tue, 12 Oct 2021 00:37:01 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ga-QeWX2XUbh; Tue, 12 Oct 2021 00:37:00 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8E5284B173; Tue, 12 Oct 2021 00:36:59 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E79974B091 for ; Tue, 12 Oct 2021 00:36:57 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TIdNj9X85E89 for ; Tue, 12 Oct 2021 00:36:57 -0400 (EDT) Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id EABF54B128 for ; Tue, 12 Oct 2021 00:36:56 -0400 (EDT) Received: by mail-pg1-f201.google.com with SMTP id w185-20020a6362c2000000b0029566b18a88so8034216pgb.15 for ; Mon, 11 Oct 2021 21:36:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=eIUhuChkelcONVLGBJ0a2MPEEEhxwwehMuijtFOAuDI=; b=RuE+yIAI83dgKgc0EI81lpKKKdaCzCn8+SfDwPeU8Fln6xA4/deZlxo2DwtD71VRgy cw6TSj8JyRvn5oKLcvmqRuGF7hVSbUVdrEMEKUojpjZyBBQ+tJ1vSUHBrWlg1IuSMZPv R+rpCZeNhqGRUmc+stVB+dTUWZ147p6Jjc9tP2WejjahKq68g464d/gR3s99oJIo6lWp A/jaKj7gVcm9U7Tzh6Orb4tNznNnOji9vtaNMWche+5EZdUD4rHwml9Y4DQ6LY92/e/n yuPPhMOR//Z2EmHt3/Rk9H1biH/MgK7UmW3yEvDk4dlwnyojLI/KFQPcSc40TnGmCYIW ZXcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=eIUhuChkelcONVLGBJ0a2MPEEEhxwwehMuijtFOAuDI=; b=LbJTyeEMG/uXZVJbOlonexE2Yip28BW523SarBLy7DV7amjaMPbivNcPb1RQlmXEPS 204VVVh4mDY25laTDp65oCuiOX2Bby/puPS/dmyzYRBGctd05SFQ8pbIYxBqR37YRL05 zbuwpYmwlzl/TShyAhUBKvbn98FeuiUYVFEXr/8I7QK3aqIgSJ5ERLbX0NZdPpXMdKqi SWsfBRfQ3cqZex1N/XEBesgfvHNAR4teXQTOmG4P9BcPWsCCAzld2TTl1C5g+NS3L3ZR YOmHe+ERmrLZME5Ih5VWb6OJJwVJUBoZGOUKwFXFpX85zAZTXa2+Le3ZPNlI1A/tVlIM MJPw== X-Gm-Message-State: AOAM533caQIj604BkOHypXjvnKXEESGmNTx0OaqOhFfF+IRh0mwvnC7s Zz8B+cetAPbaPcFJBXt/ocqEQkPbbT8= X-Google-Smtp-Source: ABdhPJyTEEEJJ8ULSCGnE5RUuiEtmSCACpElVLQCVz7cpGVyLWG6TLcY5A92rMWKWU0CqVfHfvo0h0Ok6PA= X-Received: from reiji-vws.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:15a3]) (user=reijiw job=sendgmr) by 2002:a17:902:6ac4:b0:13f:52e1:8840 with SMTP id i4-20020a1709026ac400b0013f52e18840mr1435432plt.15.1634013416153; Mon, 11 Oct 2021 21:36:56 -0700 (PDT) Date: Mon, 11 Oct 2021 21:35:34 -0700 In-Reply-To: <20211012043535.500493-1-reijiw@google.com> Message-Id: <20211012043535.500493-25-reijiw@google.com> Mime-Version: 1.0 References: <20211012043535.500493-1-reijiw@google.com> X-Mailer: git-send-email 2.33.0.882.g93a45727a2-goog Subject: [RFC PATCH 24/25] KVM: arm64: Activate trapping of disabled CPU features for the guest From: Reiji Watanabe To: Marc Zyngier , kvmarm@lists.cs.columbia.edu Cc: kvm@vger.kernel.org, Will Deacon , Peter Shier , Paolo Bonzini , linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Call kvm_vcpu_id_regs_trap_activate() at the first KVM_RUN to activate trapping of disabled CPU features. Signed-off-by: Reiji Watanabe --- arch/arm64/include/asm/kvm_host.h | 1 + arch/arm64/kvm/arm.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 691cb6ee0f5c..41f785fdc2e6 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -743,6 +743,7 @@ long kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm, struct kvm_arm_copy_mte_tags *copy_tags); int kvm_id_regs_consistency_check(const struct kvm_vcpu *vcpu); +void kvm_vcpu_id_regs_trap_activate(struct kvm_vcpu *vcpu); /* Guest/host FPSIMD coordination helpers */ int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu); diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 38301ddf8372..6b392d7feab7 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -606,6 +606,8 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu) if (kvm_id_regs_consistency_check(vcpu)) return -EPERM; + kvm_vcpu_id_regs_trap_activate(vcpu); + return ret; } -- 2.33.0.882.g93a45727a2-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm