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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 BDBC3C43382 for ; Wed, 26 Sep 2018 16:33:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7FCB52152E for ; Wed, 26 Sep 2018 16:33:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7FCB52152E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728647AbeIZWrS (ORCPT ); Wed, 26 Sep 2018 18:47:18 -0400 Received: from foss.arm.com ([217.140.101.70]:49932 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728431AbeIZWrR (ORCPT ); Wed, 26 Sep 2018 18:47:17 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8369C15BE; Wed, 26 Sep 2018 09:33:32 -0700 (PDT) Received: from en101.Emea.Arm.com (en101.emea.arm.com [10.4.13.23]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 053E43F5B3; Wed, 26 Sep 2018 09:33:29 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, marc.zyngier@arm.com, cdall@kernel.org, eric.auger@redhat.com, suzuki.poulose@arm.com, will.deacon@arm.com, dave.martin@arm.com, peter.maydell@linaro.org, pbonzini@redhat.com, rkrcmar@redhat.com, julien.grall@arm.com, linux-kernel@vger.kernel.org Subject: [PATCH v6 02/18] kvm: arm/arm64: Remove spurious WARN_ON Date: Wed, 26 Sep 2018 17:32:38 +0100 Message-Id: <20180926163258.20218-3-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20180926163258.20218-1-suzuki.poulose@arm.com> References: <20180926163258.20218-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On a 4-level page table pgd entry can be empty, unlike a 3-level page table. Remove the spurious WARN_ON() in stage_get_pud(). Acked-by: Christoffer Dall Acked-by: Marc Zyngier Reviewed-by: Eric Auger Signed-off-by: Suzuki K Poulose --- virt/kvm/arm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index ee7ce8fa4a12..4a285d760ce0 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -1005,7 +1005,7 @@ static pud_t *stage2_get_pud(struct kvm *kvm, struct kvm_mmu_memory_cache *cache pud_t *pud; pgd = kvm->arch.pgd + stage2_pgd_index(addr); - if (WARN_ON(stage2_pgd_none(*pgd))) { + if (stage2_pgd_none(*pgd)) { if (!cache) return NULL; pud = mmu_memory_cache_alloc(cache); -- 2.19.0