From patchwork Tue Dec 1 08:53:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 335849 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 025B6C83011 for ; Tue, 1 Dec 2020 09:11:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 928D92067D for ; Tue, 1 Dec 2020 09:11:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LTln4Os3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389840AbgLAJLW (ORCPT ); Tue, 1 Dec 2020 04:11:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:47718 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389836AbgLAJLV (ORCPT ); Tue, 1 Dec 2020 04:11:21 -0500 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 37846206D8; Tue, 1 Dec 2020 09:11:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1606813860; bh=97rXMXm2dBPWDSP1AUJYVwLfVwzxgl9TYjZ+v2PpO8A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LTln4Os3L/eNlWdCs31yJSBqP8D+2DqWa6Zd0uTYy4sLI0O+nIvMVTK/GUBpLvZ6s IpM3D7LdUXIK3YmLzhjHoTfgaRDMneNpu8USd8PsHtYalsz2B3jNjXT5foMjz6AvVD pmGRXNCubRbfoowkp6IWBOeaEO7r3cOefxBc8y/k= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Collin Walling , Christian Borntraeger , Janosch Frank , Cornelia Huck , Sasha Levin Subject: [PATCH 5.9 077/152] KVM: s390: remove diag318 reset code Date: Tue, 1 Dec 2020 09:53:12 +0100 Message-Id: <20201201084721.981329345@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201201084711.707195422@linuxfoundation.org> References: <20201201084711.707195422@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Collin Walling [ Upstream commit 6cbf1e960fa52e4c63a6dfa4cda8736375b34ccc ] The diag318 data must be set to 0 by VM-wide reset events triggered by diag308. As such, KVM should not handle resetting this data via the VCPU ioctls. Fixes: 23a60f834406 ("s390/kvm: diagnose 0x318 sync and reset") Signed-off-by: Collin Walling Reviewed-by: Christian Borntraeger Reviewed-by: Janosch Frank Acked-by: Cornelia Huck Signed-off-by: Christian Borntraeger Link: https://lore.kernel.org/r/20201104181032.109800-1-walling@linux.ibm.com Signed-off-by: Sasha Levin --- arch/s390/kvm/kvm-s390.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 08ea6c4735cdc..425d3d75320bf 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -3564,7 +3564,6 @@ static void kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu) vcpu->arch.sie_block->pp = 0; vcpu->arch.sie_block->fpf &= ~FPF_BPBC; vcpu->arch.sie_block->todpr = 0; - vcpu->arch.sie_block->cpnc = 0; } } @@ -3582,7 +3581,6 @@ static void kvm_arch_vcpu_ioctl_clear_reset(struct kvm_vcpu *vcpu) regs->etoken = 0; regs->etoken_extension = 0; - regs->diag318 = 0; } int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)