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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_DOTEDU_SUSP,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 913D3C4742C for ; Tue, 10 Nov 2020 14:13:22 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id C0BB620797 for ; Tue, 10 Nov 2020 14:13:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="eevBjJdx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C0BB620797 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 1ABE44B8BC; Tue, 10 Nov 2020 09:13:21 -0500 (EST) 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=@kernel.org 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 5hTDzCvsMkgf; Tue, 10 Nov 2020 09:13:18 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id D689B4B902; Tue, 10 Nov 2020 09:13:18 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 214024B93C for ; Tue, 10 Nov 2020 09:13:17 -0500 (EST) 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 jJ-Z6aaU5Y0D for ; Tue, 10 Nov 2020 09:13:16 -0500 (EST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 2277F4B8D0 for ; Tue, 10 Nov 2020 09:13:16 -0500 (EST) Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BB782207E8; Tue, 10 Nov 2020 14:13:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605017594; bh=JIJiOB88U7qGpDmmoxCMenpTc0s/h87h3MJM7Q4ZwqA=; h=From:To:Cc:Subject:Date:From; b=eevBjJdxE5ATVifFoMcdFwRvrDrdPcf5A4Uq/2knK9AMjrV+rWkfyxDhEH01yIWef 3klarVSpE4HXbH9ai0o4gTWeHp9jseRMkfwBjO6DSQaRxmLxSG8piSTXfX81nNjkn0 bj3yquDDsN6Py/6sLS8LytdTTa4yjRyN7GGPZc8U= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1kcUOW-009T8Q-Da; Tue, 10 Nov 2020 14:13:12 +0000 From: Marc Zyngier To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 0/3] KVM: arm64: Another set of CSV2-related fixes Date: Tue, 10 Nov 2020 14:13:05 +0000 Message-Id: <20201110141308.451654-1-maz@kernel.org> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, liangpeng10@huawei.com, will@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: Will Deacon , kernel-team@android.com 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 This small series addresses a couple of Spectre-v2 related issues: - Fix a live migration regression introduced with the setting of CSV2 on systems that are not affected by Spectre-v2, but that don't directly expose it in ID_AA64PFR0_EL1 - Inject an UNDEF exception if the guest tries to access any of SCXTNUM_ELx, as we don't advertise it to guests. Patches on top of 5.10-rc2. * From v1: - Only register a new value for CSV2 on a valid write to ID_AA64PFR0_EL1 - Delete even more code in patch #2 Marc Zyngier (3): KVM: arm64: Allow setting of ID_AA64PFR0_EL1.CSV2 from userspace KVM: arm64: Unify trap handlers injecting an UNDEF KVM: arm64: Handle SCXTNUM_ELx traps arch/arm64/include/asm/kvm_host.h | 2 + arch/arm64/include/asm/sysreg.h | 4 ++ arch/arm64/kvm/arm.c | 16 +++++ arch/arm64/kvm/sys_regs.c | 111 ++++++++++++++++++------------ 4 files changed, 89 insertions(+), 44 deletions(-) -- 2.28.0 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm