From patchwork Thu Jun 7 22:24:24 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 163681 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id ACF46B6EF3 for ; Fri, 8 Jun 2012 08:25:02 +1000 (EST) Received: from localhost ([::1]:55553 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Scl8W-0001Lt-G5 for incoming@patchwork.ozlabs.org; Thu, 07 Jun 2012 18:25:00 -0400 Received: from eggs.gnu.org ([208.118.235.92]:54091) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Scl8F-0001Ij-Sj for qemu-devel@nongnu.org; Thu, 07 Jun 2012 18:24:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Scl8D-0006Dz-IT for qemu-devel@nongnu.org; Thu, 07 Jun 2012 18:24:43 -0400 Received: from mail-pz0-f45.google.com ([209.85.210.45]:54072) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Scl8D-0006DT-9z for qemu-devel@nongnu.org; Thu, 07 Jun 2012 18:24:41 -0400 Received: by dadv2 with SMTP id v2so1641799dad.4 for ; Thu, 07 Jun 2012 15:24:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; bh=OLu64m2jVDze+PHj47261SvQ2dHkiUWGs2oFmGSQe60=; b=VMDqToW7tVn71bJw1qi0QTorWGopWr/nBXBXmj7R6ku/iCcOWpEsJYQQEWIs1LCuf4 Ag1/RkMHIbFwjVzXrrC9flaC4X3e7z3fpQLt58zR+HNqFLnZHh6MOdqMjmWySfPrh32M zisiVK92eEzFWqXRyMI9EmBiZ2dY46ST09+cgr5min1c6s6T4t/cmxcLT+Vq3zgjaWUM j+3ojY9schpZ8RPHAn2L/p/T1QkW0TBaU5XTWK0jlvn82kQlyy927PorWuAE2MEmi4b8 JPhY2sdR5lLHlGUeMsvdfoVPk2SR03WQLIjfNZLDuycGfJMlthVTt/aD1LNe1AUKRARR bsiQ== Received: by 10.68.190.131 with SMTP id gq3mr4887296pbc.17.1339107879282; Thu, 07 Jun 2012 15:24:39 -0700 (PDT) Received: from anchor.twiddle.home ([173.160.232.49]) by mx.google.com with ESMTPS id u5sm5454817pbu.76.2012.06.07.15.24.38 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 07 Jun 2012 15:24:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Thu, 7 Jun 2012 15:24:24 -0700 Message-Id: <1339107871-4487-3-git-send-email-rth@twiddle.net> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <1339107871-4487-1-git-send-email-rth@twiddle.net> References: <1339107871-4487-1-git-send-email-rth@twiddle.net> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.85.210.45 Cc: Riku Voipio Subject: [Qemu-devel] [PATCH 2/9] alpha-linux-user: Work around hosted mmap allocation problems X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Richard Henderson --- target-alpha/cpu.h | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/target-alpha/cpu.h b/target-alpha/cpu.h index 99f9ee1..0d87fa7 100644 --- a/target-alpha/cpu.h +++ b/target-alpha/cpu.h @@ -40,9 +40,20 @@ #define TARGET_PAGE_BITS 13 +#ifdef CONFIG_USER_ONLY +/* ??? The kernel likes to give addresses in high memory. If the host has + more virtual address space than the guest, this can lead to impossible + allocations. Honor the long-standing assumption that only kernel addrs + are negative, but otherwise allow allocations anywhere. This could lead + to tricky emulation problems for programs doing tagged addressing, but + that's far fewer than encounter the impossible allocation problem. */ +#define TARGET_PHYS_ADDR_SPACE_BITS 63 +#define TARGET_VIRT_ADDR_SPACE_BITS 63 +#else /* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */ #define TARGET_PHYS_ADDR_SPACE_BITS 44 #define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS) +#endif /* Alpha major type */ enum {