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[209.132.180.67]) by mx.google.com with ESMTP id 3si87779920pln.317.2017.01.08.22.29.13; Sun, 08 Jan 2017 22:29:13 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161379AbdAIG2y (ORCPT + 25 others); Mon, 9 Jan 2017 01:28:54 -0500 Received: from outprodmail01.cc.columbia.edu ([128.59.72.39]:38644 "EHLO outprodmail01.cc.columbia.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S939842AbdAIG0l (ORCPT ); Mon, 9 Jan 2017 01:26:41 -0500 Received: from hazelnut (hazelnut.cc.columbia.edu [128.59.213.250]) by outprodmail01.cc.columbia.edu (8.14.4/8.14.4) with ESMTP id v096Q9dm018086 for ; Mon, 9 Jan 2017 01:26:32 -0500 Received: from hazelnut (localhost.localdomain [127.0.0.1]) by hazelnut (Postfix) with ESMTP id CBF3B87 for ; Mon, 9 Jan 2017 01:26:32 -0500 (EST) Received: from sendprodmail04.cc.columbia.edu (sendprodmail04.cc.columbia.edu [128.59.72.16]) by hazelnut (Postfix) with ESMTP id 938FBA1 for ; Mon, 9 Jan 2017 01:26:32 -0500 (EST) Received: from mail-qt0-f198.google.com (mail-qt0-f198.google.com [209.85.216.198]) by sendprodmail04.cc.columbia.edu (8.14.4/8.14.4) with ESMTP id v096QWeO005790 (version=TLSv1/SSLv3 cipher=AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 9 Jan 2017 01:26:32 -0500 Received: by mail-qt0-f198.google.com with SMTP id t56so77869193qte.3 for ; Sun, 08 Jan 2017 22:26:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=HgoeRbscYA5QdpEOsNpIhgRmeOCICYzHfcarNNNUqJI=; b=o9MnkdRvAtaqW3QKefm/SakROisNwh8cQ0all6laEP1jIYRyTLhMkklBHmJsUVcrm6 omJwReKKEcctHbbE+bF7N+6OtiytJgizO6+LK9ggTUFtNPMRghgEwS3ZJm1QEfMBhhtx uluEDzJ+I4t9E2jvUwG1RH4d/JOa9mXCntqqaomffDPcgKHyLWAwHBpGSMXv5eDzGYuM fIiPPoABndcjzp2ci7qe86iardLCgFSvB0rdBBj7MllyJUOGfvuuF/Gg4ri/I5Wao2xD TftBcQswR4T5M4wK7Uc4Bbj9kMuSB+rG0j4PKBUxzvE6m2umPQ4Gq9CWZmf1BB+ldFyd B5/A== X-Gm-Message-State: AIkVDXKsHmOCX7VBVhhKWNloqQrpfP5N9BAykrOYtMSrGnBqAaQ9gsGszYBXYhjvspQ8uFEc2Rq+32ioRSFD8nXmpE4HUTPU6qziMfX7vHCezo/NYv6g7c+OGIwrgYNJPnVb9nsuMYwbhto32VrgkGlerOU= X-Received: by 10.55.127.129 with SMTP id a123mr83632580qkd.129.1483943192148; Sun, 08 Jan 2017 22:26:32 -0800 (PST) X-Received: by 10.55.127.129 with SMTP id a123mr83632575qkd.129.1483943192019; Sun, 08 Jan 2017 22:26:32 -0800 (PST) Received: from jintack.cs.columbia.edu ([2001:18d8:ffff:16:21a:4aff:feaa:f900]) by smtp.gmail.com with ESMTPSA id h3sm8623257qtc.6.2017.01.08.22.26.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 08 Jan 2017 22:26:31 -0800 (PST) From: Jintack Lim To: christoffer.dall@linaro.org, marc.zyngier@arm.com, pbonzini@redhat.com, rkrcmar@redhat.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, vladimir.murzin@arm.com, suzuki.poulose@arm.com, mark.rutland@arm.com, james.morse@arm.com, lorenzo.pieralisi@arm.com, kevin.brodsky@arm.com, wcohen@redhat.com, shankerd@codeaurora.org, geoff@infradead.org, andre.przywara@arm.com, eric.auger@redhat.com, anna-maria@linutronix.de, shihwei@cs.columbia.edu, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jintack@cs.columbia.edu Subject: [RFC 48/55] KVM: arm64: Emulate TLBI instruction Date: Mon, 9 Jan 2017 01:24:44 -0500 Message-Id: <1483943091-1364-49-git-send-email-jintack@cs.columbia.edu> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1483943091-1364-1-git-send-email-jintack@cs.columbia.edu> References: <1483943091-1364-1-git-send-email-jintack@cs.columbia.edu> X-No-Spam-Score: Local X-Scanned-By: MIMEDefang 2.78 on 128.59.72.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Christoffer Dall Currently, we flush ALL shadow stage-2 page tables on the tlbi instruction execution. We may be able to do this more efficiently by considering the vttbr_el2 value of the guest hypervisor, but leave it for now. Signed-off-by: Christoffer Dall Signed-off-by: Jintack Lim --- arch/arm64/kvm/sys_regs.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) -- 1.9.1 diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index ddb641c..b0a057d 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2013,8 +2013,14 @@ static int emulate_sys_reg(struct kvm_vcpu *vcpu, static int emulate_tlbi(struct kvm_vcpu *vcpu, struct sys_reg_params *params) { - /* TODO: support tlbi instruction emulation*/ - kvm_inject_undefined(vcpu); + /* + * We unmap ALL stage-2 page tables on tlbi instruction. + * We may make it more efficient by looking at the exact tlbi + * instruction. + */ + stage2_unmap_vm(vcpu->kvm); + kvm_nested_s2_unmap(vcpu); + return 1; }