From patchwork Thu Apr 14 13:20:56 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 8836471 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 916C59F36E for ; Thu, 14 Apr 2016 13:25:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B464B2017E for ; Thu, 14 Apr 2016 13:25:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D6EEC2026F for ; Thu, 14 Apr 2016 13:25:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932276AbcDNNVt (ORCPT ); Thu, 14 Apr 2016 09:21:49 -0400 Received: from foss.arm.com ([217.140.101.70]:42562 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932249AbcDNNVs (ORCPT ); Thu, 14 Apr 2016 09:21:48 -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 31DEF5CF; Thu, 14 Apr 2016 06:20:33 -0700 (PDT) Received: from e106634-lin.cambridge.arm.com (e106634-lin.cambridge.arm.com [10.1.209.136]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B13613F25F; Thu, 14 Apr 2016 06:21:45 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: kvm@vger.kernel.org, marc.zyngier@arm.com, christoffer.dall@linaro.org, mark.rutland@arm.com, will.deacon@arm.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Suzuki K Poulose Subject: [PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty checks Date: Thu, 14 Apr 2016 14:20:56 +0100 Message-Id: <1460640065-27658-9-git-send-email-suzuki.poulose@arm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1460640065-27658-1-git-send-email-suzuki.poulose@arm.com> References: <1460640065-27658-1-git-send-email-suzuki.poulose@arm.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce hyp_pxx_table_empty helpers for checking whether a given table entry is empty. This will be used explicitly once we switch to explicit routines for hyp page table walk. Cc: Marc Zyngier Reviewed-by: Christoffer Dall Signed-off-by: Suzuki K Poulose Acked-by: Marc Zyngier --- arch/arm/include/asm/kvm_mmu.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h index 7d207b4..901c1ea 100644 --- a/arch/arm/include/asm/kvm_mmu.h +++ b/arch/arm/include/asm/kvm_mmu.h @@ -162,6 +162,10 @@ static inline bool kvm_page_empty(void *ptr) #define kvm_pmd_table_empty(kvm, pmdp) kvm_page_empty(pmdp) #define kvm_pud_table_empty(kvm, pudp) (0) +#define hyp_pte_table_empty(ptep) kvm_page_empty(ptep) +#define hyp_pmd_table_empty(pmdp) kvm_page_empty(pmdp) +#define hyp_pud_table_empty(pudp) (0) + static inline void *kvm_get_hwpgd(struct kvm *kvm) { return kvm->arch.pgd;