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 B24E9C433EF for ; Wed, 3 Nov 2021 06:28:47 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 633806115B for ; Wed, 3 Nov 2021 06:28:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 633806115B 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 0FE234B1AA; Wed, 3 Nov 2021 02:28:47 -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 7GpwkxCitHHc; Wed, 3 Nov 2021 02:28:45 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id C90834B1BC; Wed, 3 Nov 2021 02:28:43 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 3DFA04B0FB for ; Wed, 3 Nov 2021 02:28:42 -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 ZL3mH0cMSINe for ; Wed, 3 Nov 2021 02:28:41 -0400 (EDT) Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id CCE3D4B162 for ; Wed, 3 Nov 2021 02:28:39 -0400 (EDT) Received: by mail-pg1-f202.google.com with SMTP id n22-20020a6563d6000000b0029261ffde9bso981368pgv.22 for ; Tue, 02 Nov 2021 23:28:39 -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=ugTp3pj0zYJHc3RiE+6osaY4VwnihaeWletwlGqcNzU=; b=R3uU4a/mva3/sHp7C4ovXEbTpY7IYU6h/nzYCMUJp+ghGJCGhatLHR1IKqI10LJdsq metLBMGZYNoR04MfVYDKXlUey3kGDSwo0EjdTYks9XJKbommPpi8BgxoxZsCJFWVn+FH suf/FuoQtsLvDHUgsMRQSKYW6N1T76XjKMIT5Nofnr4EqXt5x9/XND18vMR8omRCh86s lmj2LyQP8xjLWfKoCds4tFt8KtCS6W5Xvnfb9Ast3913Gm3/3W7g9o2hEZ70yRhH9PIb d85b0EGtsmqV1k28mIcfQVqisSh3ApCaLI0unMYmbjVQtkJP9vVP6MdUcTHer2id1sPz 46RA== 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=ugTp3pj0zYJHc3RiE+6osaY4VwnihaeWletwlGqcNzU=; b=3lz+9eNu5Lo+DSHHRzQxhrbaLm5t2txfD/jgW+siI6usxRK5lxdEOnxfo1kZ539EBQ sIaWgUslPVjVYoSua7nbnIieoWCIoU15gwpA9pfznDFpwert2MR9GV6s4KwXuUBSUXkZ Wlw1UQFnIJgffKMUD8MtJjfZQLnbIakaghBBd5+6wszA1gojfL8ZejLysGcLfLC7feuA i7bk7EXmOcASzRuCGjuQet4PL8WJUYds2AktWlS/VnQHnmDnfgkSisf1AfhepEeaWASa zI0SmRZwATTvKHhD29AqPTvQXe7gMbZj10rt3bdHo/h2bKcGvWzaFm6yBYvdcpbj/T1J Fjxg== X-Gm-Message-State: AOAM533y1s4ExCOvdIddSjf23UECmfOTcrbBJHaH35ALuKNqUYP81ax9 RNAJwdlYUVhi62TkIsNmYfwIkhxmG44= X-Google-Smtp-Source: ABdhPJxwjlhoTqnj4E9V//tM6ijYmQGHJIKCJ/YZeqcBnm3mpZgLE3LmRBu6b58jjITFPpnfBiYA1pEZdDg= X-Received: from reiji-vws-sp.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3d59]) (user=reijiw job=sendgmr) by 2002:a17:90a:353:: with SMTP id 19mr12674037pjf.83.1635920918981; Tue, 02 Nov 2021 23:28:38 -0700 (PDT) Date: Tue, 2 Nov 2021 23:25:19 -0700 In-Reply-To: <20211103062520.1445832-1-reijiw@google.com> Message-Id: <20211103062520.1445832-28-reijiw@google.com> Mime-Version: 1.0 References: <20211103062520.1445832-1-reijiw@google.com> X-Mailer: git-send-email 2.33.1.1089.g2158813163f-goog Subject: [RFC PATCH v2 27/28] 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 afc49d2faa9a..330a35217987 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -583,6 +583,8 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu) return -EPERM; } + kvm_vcpu_id_regs_trap_activate(vcpu); + kvm_arm_vcpu_init_debug(vcpu); if (likely(irqchip_in_kernel(kvm))) { -- 2.33.1.1089.g2158813163f-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm