From patchwork Fri Mar 14 12:47:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Hogan X-Patchwork-Id: 3832691 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id CDFA6BF540 for ; Fri, 14 Mar 2014 12:48:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E8A972028D for ; Fri, 14 Mar 2014 12:48:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CAA49202A1 for ; Fri, 14 Mar 2014 12:48:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754313AbaCNMsW (ORCPT ); Fri, 14 Mar 2014 08:48:22 -0400 Received: from mailapp01.imgtec.com ([195.89.28.115]:39219 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754277AbaCNMsU (ORCPT ); Fri, 14 Mar 2014 08:48:20 -0400 Received: from KLMAIL01.kl.imgtec.org (unknown [192.168.5.35]) by Websense Email Security Gateway with ESMTPS id 2248FF9FBC3B7; Fri, 14 Mar 2014 12:48:16 +0000 (GMT) Received: from LEMAIL01.le.imgtec.org (192.168.152.62) by KLMAIL01.kl.imgtec.org (192.168.5.35) with Microsoft SMTP Server (TLS) id 14.3.174.1; Fri, 14 Mar 2014 12:48:18 +0000 Received: from jhogan-linux.le.imgtec.org (192.168.154.65) by LEMAIL01.le.imgtec.org (192.168.152.62) with Microsoft SMTP Server (TLS) id 14.3.174.1; Fri, 14 Mar 2014 12:48:18 +0000 From: James Hogan To: CC: , Aurelien Jarno , Gleb Natapov , Paolo Bonzini , Sanjay Lal , James Hogan Subject: [PATCH v4 02/10] hw/mips: Add API to convert KVM guest KSEG0 <-> GPA Date: Fri, 14 Mar 2014 12:47:53 +0000 Message-ID: <1394801281-18997-3-git-send-email-james.hogan@imgtec.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1394801281-18997-1-git-send-email-james.hogan@imgtec.com> References: <1394801281-18997-1-git-send-email-james.hogan@imgtec.com> MIME-Version: 1.0 X-Originating-IP: [192.168.154.65] Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 From: Sanjay Lal Add APIs for converting between KVM guest KSEG0 addresses and guest physical addresses. These will be used for translating addresses when loading a kernel ELF in KVM mode. In KVM trap and emulate mode both the guest kernel and guest userspace execute in useg: Guest User address space: 0x00000000..0x3fffffff Guest Kernel Unmapped: 0x40000000..0x5fffffff Guest Kernel Mapped: 0x60000000..0x7fffffff Signed-off-by: Sanjay Lal Signed-off-by: James Hogan Reviewed-by: Aurelien Jarno --- Changes in v2: - Expand commit message - Remove unnecessary include --- hw/mips/addr.c | 10 ++++++++++ include/hw/mips/cpudevs.h | 4 ++++ 2 files changed, 14 insertions(+) diff --git a/hw/mips/addr.c b/hw/mips/addr.c index 99488f1..e62d6f4 100644 --- a/hw/mips/addr.c +++ b/hw/mips/addr.c @@ -28,7 +28,17 @@ uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr) return addr & 0x7fffffffll; } +uint64_t cpu_mips_kvm_um_kseg0_to_phys(void *opaque, uint64_t addr) +{ + return addr & 0x3fffffffll; +} + uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr) { return addr | ~0x7fffffffll; } + +uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr) +{ + return addr | 0x40000000ll; +} diff --git a/include/hw/mips/cpudevs.h b/include/hw/mips/cpudevs.h index 6bea24b..9e5af37 100644 --- a/include/hw/mips/cpudevs.h +++ b/include/hw/mips/cpudevs.h @@ -6,6 +6,10 @@ uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr); uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr); +uint64_t cpu_mips_kvm_um_kseg0_to_phys(void *opaque, uint64_t addr); +uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr); + + /* mips_int.c */ void cpu_mips_irq_init_cpu(CPUMIPSState *env);