From patchwork Thu Nov 8 10:59:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zhijian X-Patchwork-Id: 10673995 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 206AD13BF for ; Thu, 8 Nov 2018 10:47:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1022E2CF5D for ; Thu, 8 Nov 2018 10:47:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F22F22D221; Thu, 8 Nov 2018 10:47:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E16922CF5D for ; Thu, 8 Nov 2018 10:47:34 +0000 (UTC) Received: from localhost ([::1]:55775 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gKhqX-0003dX-Qh for patchwork-qemu-devel@patchwork.kernel.org; Thu, 08 Nov 2018 05:47:33 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39799) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gKhRx-0004gG-RP for qemu-devel@nongnu.org; Thu, 08 Nov 2018 05:22:12 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gKhI8-0008V9-8D for qemu-devel@nongnu.org; Thu, 08 Nov 2018 05:12:03 -0500 Received: from mga09.intel.com ([134.134.136.24]:7254) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gKhI7-0008PV-S1 for qemu-devel@nongnu.org; Thu, 08 Nov 2018 05:12:00 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Nov 2018 02:11:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,478,1534834800"; d="scan'208";a="87635704" Received: from mke-mobl.ccr.corp.intel.com (HELO haswell-OptiPlex-9020.ccr.corp.intel.com) ([10.255.30.228]) by orsmga007.jf.intel.com with ESMTP; 08 Nov 2018 02:11:52 -0800 From: Li Zhijian To: qemu-devel@nongnu.org Date: Thu, 8 Nov 2018 18:59:41 +0800 Message-Id: <1541674784-25936-1-git-send-email-lizhijian@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.24 Subject: [Qemu-devel] [RFC/PoC PATCH 0/3] support initrd size up to 4G X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , zhijianx.li@intel.com, Richard Henderson , Li Zhijian , Peter Crosthwaite Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Long long ago, linux kernel have supported up to 4G initrd, but it's header still hard code to allow 2G - 1 only. # (Header version 0x0203 or later) the highest safe address for the contents # of an initrd. The current kernel allows up to 4 GB, but leave it at 2 GB to # avoid possible bootloader bugs. kexec is one of the known scenario which has supported up to 4G initrd. This patches is to enable up to 4G initrd, Seabios + optionrom(linuxboot_dma) works as expected so far. 3/3 has a huge change of address/memory APIs. I replace 'int len' in a stupid way, but it looks not safety. $ sed -i 's/int len/uint32_t len/' exec.c $ make # and check compiling errors $ sed -i 's/int len/uint32_t len/' cpu-all.h $ make -i 's/int len/uint32_t len/' include/exec/cpu-common.h $ make -i 's/int len/uint32_t len/' include/exec/memory.h $ make # all errors gone CC: Paolo Bonzini CC: Peter Crosthwaite CC: Richard Henderson Li Zhijian (3): i386: set initrd_max to 4G - 1 to allow up to 4G initrd change size type from int to int64_t on load_image() change int len to uin32_t len exec.c | 42 +++++++++++++++++++++--------------------- hw/core/loader.c | 3 ++- hw/i386/pc.c | 6 ++++++ include/exec/cpu-all.h | 2 +- include/exec/cpu-common.h | 10 +++++----- include/exec/memory.h | 20 ++++++++++---------- 6 files changed, 45 insertions(+), 38 deletions(-)