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 665B6ECE564 for ; Mon, 17 Sep 2018 10:43:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 25E5720671 for ; Mon, 17 Sep 2018 10:43:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 25E5720671 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 S1728505AbeIQQJw (ORCPT ); Mon, 17 Sep 2018 12:09:52 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:56620 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728464AbeIQQJw (ORCPT ); Mon, 17 Sep 2018 12:09:52 -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 753DA80D; Mon, 17 Sep 2018 03:43:04 -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 EEE213F5BD; Mon, 17 Sep 2018 03:43:01 -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, pbonzini@redhat.com, rkrcmar@redhat.com, will.deacon@arm.com, catalin.marinas@arm.com, james.morse@arm.com, dave.martin@arm.com, julien.grall@arm.com, linux-kernel@vger.kernel.org, suzuki.poulose@arm.com Subject: [PATCH v5 15/18] kvm: arm64: Add 52bit support for PAR to HPFAR conversoin Date: Mon, 17 Sep 2018 11:41:37 +0100 Message-Id: <20180917104144.19188-16-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20180917104144.19188-1-suzuki.poulose@arm.com> References: <20180917104144.19188-1-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 Add support for handling 52bit addresses in PAR to HPFAR conversion. Instead of hardcoding the address limits, we now use PHYS_MASK_SHIFT. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm64/include/asm/kvm_arm.h | 7 +++++++ arch/arm64/kvm/hyp/switch.c | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 0a37c0513ede..241d1622fa19 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -308,6 +308,13 @@ /* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */ #define HPFAR_MASK (~UL(0xf)) +/* + * We have + * PAR [PA_Shift - 1 : 12] = PA [PA_Shift - 1 : 12] + * HPFAR [PA_Shift - 9 : 4] = FIPA [PA_Shift - 1 : 12] + */ +#define PAR_TO_HPFAR(par) \ + (((par) & GENMASK_ULL(PHYS_MASK_SHIFT - 1, 12)) >> 8) #define kvm_arm_exception_type \ {0, "IRQ" }, \ diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c index 9d5ce1a3039a..7cc175c88a37 100644 --- a/arch/arm64/kvm/hyp/switch.c +++ b/arch/arm64/kvm/hyp/switch.c @@ -263,7 +263,7 @@ static bool __hyp_text __translate_far_to_hpfar(u64 far, u64 *hpfar) return false; /* Translation failed, back to guest */ /* Convert PAR to HPFAR format */ - *hpfar = ((tmp >> 12) & ((1UL << 36) - 1)) << 4; + *hpfar = PAR_TO_HPFAR(tmp); return true; } -- 2.19.0