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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 00E26C432C0 for ; Fri, 22 Nov 2019 10:57:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB2A62071C for ; Fri, 22 Nov 2019 10:57:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574420234; bh=5MH6Ax/vtJQFiVkOpwSaJoxC1Gi53ZAWxPTk71j1TkI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nf+BOzIIXUSIw++L5Bi/NOunct5v9qvs37SV4MYP2Rod9yAvkChIb5FHckv8SOBRM V/Ngpo+jwUaGUGqF9yN8uHEYu7Dd8xfDAGMv/G/nBuYSRIRhrlQ38mnLICyFXN06IA 2v0xIZEX2jGVPUNNUYQtnZVLxVcAqV1K8/59ZCl8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729982AbfKVK5N (ORCPT ); Fri, 22 Nov 2019 05:57:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:45774 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730405AbfKVK5I (ORCPT ); Fri, 22 Nov 2019 05:57:08 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 7E0BB2072E; Fri, 22 Nov 2019 10:57:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574420228; bh=5MH6Ax/vtJQFiVkOpwSaJoxC1Gi53ZAWxPTk71j1TkI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qvnTW3rVsN8K3gTCFIV4Ou7Vfpdb0/aeE/5HYqfyuIN359esmjaTYm6FoDyduMQWv XLrESa3F4NYHQRmYlyWBubUtvGKjcSsDDPMn1nltOOUra2KiQsoTtK4auqoJK/Hk3u 4FwYdEpbTmeRNVMyhYj8UL8MsLIDP4HIYhoWoRVQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoffer Dall , Marc Zyngier , Eric Auger , Suzuki K Poulose , Sasha Levin Subject: [PATCH 4.19 036/220] kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table Date: Fri, 22 Nov 2019 11:26:41 +0100 Message-Id: <20191122100914.936074739@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191122100912.732983531@linuxfoundation.org> References: <20191122100912.732983531@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Suzuki K Poulose [ Upstream commit d2db7773ba864df6b4e19643dfc54838550d8049 ] So far we have only supported 3 level page table with fixed IPA of 40bits, where PUD is folded. With 4 level page tables, we need to check if the PUD entry is valid or not. Fix stage2_flush_memslot() to do this check, before walking down the table. Acked-by: Christoffer Dall Acked-by: Marc Zyngier Reviewed-by: Eric Auger Signed-off-by: Suzuki K Poulose Signed-off-by: Marc Zyngier Signed-off-by: Sasha Levin --- virt/kvm/arm/mmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index 1344557a70852..bf330b493c1e7 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -412,7 +412,8 @@ static void stage2_flush_memslot(struct kvm *kvm, pgd = kvm->arch.pgd + stage2_pgd_index(addr); do { next = stage2_pgd_addr_end(addr, end); - stage2_flush_puds(kvm, pgd, addr, next); + if (!stage2_pgd_none(*pgd)) + stage2_flush_puds(kvm, pgd, addr, next); } while (pgd++, addr = next, addr != end); } -- 2.20.1