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=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0C769C55ABD for ; Mon, 9 Nov 2020 21:47:52 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 502AF216C4 for ; Mon, 9 Nov 2020 21:47:51 +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="GhAeYG3e" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 502AF216C4 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 B6BA14BA42; Mon, 9 Nov 2020 16:47:50 -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 k1Z0kISHQboh; Mon, 9 Nov 2020 16:47:48 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7CB4D4BA35; Mon, 9 Nov 2020 16:47:48 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 146CC4B47A for ; Mon, 9 Nov 2020 16:47:47 -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 XKSEMUJ9CB+d for ; Mon, 9 Nov 2020 16:47:46 -0500 (EST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 2299A4BA28 for ; Mon, 9 Nov 2020 16:47:46 -0500 (EST) Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DD3A320867; Mon, 9 Nov 2020 21:47:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604958465; bh=EduMgUnvKZbZbPbwXw+6l+cE7lfim/6QM34VACb2qTs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GhAeYG3emeK1EGVp7s2G7sTh4hho4hMdgJ+NdBnkqTeAkEsw538PtdBFzrtvus4B8 QLU/y1cykUSaYu1sEcF3lABS+NyTB1PKyBWBT10Bh955MJdWgAdjODvMn9KpneDWJy CWwzm1TaT4sjLt6cjkrlp3HMwGk4+1B5idXLqmp8= From: Will Deacon To: kvmarm@lists.cs.columbia.edu Subject: [PATCH v2 1/9] KVM: arm64: Remove redundant Spectre-v2 code from kvm_map_vector() Date: Mon, 9 Nov 2020 21:47:18 +0000 Message-Id: <20201109214726.15276-2-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201109214726.15276-1-will@kernel.org> References: <20201109214726.15276-1-will@kernel.org> MIME-Version: 1.0 Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Marc Zyngier 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 '__kvm_bp_vect_base' is only used when dealing with the hardened vectors so remove the redundant assignments in kvm_map_vectors(). Cc: Marc Zyngier Cc: Quentin Perret Signed-off-by: Will Deacon --- arch/arm64/kvm/arm.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 5750ec34960e..b43b637ded14 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1306,11 +1306,6 @@ static int kvm_map_vectors(void) * !SV2 + HEL2 -> allocate one vector slot and use exec mapping * SV2 + HEL2 -> use hardened vectors and use exec mapping */ - if (cpus_have_const_cap(ARM64_SPECTRE_V2)) { - __kvm_bp_vect_base = kvm_ksym_ref(__bp_harden_hyp_vecs); - __kvm_bp_vect_base = kern_hyp_va(__kvm_bp_vect_base); - } - if (cpus_have_const_cap(ARM64_HARDEN_EL2_VECTORS)) { phys_addr_t vect_pa = __pa_symbol(__bp_harden_hyp_vecs); unsigned long size = __BP_HARDEN_HYP_VECS_SZ; -- 2.29.2.222.g5d2a92d10f8-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm