From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.71) id 1UcHga-00068c-BO for mharc-qemu-trivial@gnu.org; Tue, 14 May 2013 12:02:44 -0400 Received: from eggs.gnu.org ([208.118.235.92]:33559) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UcHgW-00061J-56 for qemu-trivial@nongnu.org; Tue, 14 May 2013 12:02:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UcHgT-00079X-KE for qemu-trivial@nongnu.org; Tue, 14 May 2013 12:02:40 -0400 Received: from mail-gg0-x22b.google.com ([2607:f8b0:4002:c02::22b]:56373) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UcHgT-00079T-6a; Tue, 14 May 2013 12:02:37 -0400 Received: by mail-gg0-f171.google.com with SMTP id h13so121393ggd.16 for ; Tue, 14 May 2013 09:02:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:sender:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=gp9/+y88pDhYDMTmWkhvFrOYebNcelAitaPEsmKzCKQ=; b=C+11eWHDSf5oCMaI8rufNBAolWbQdl125A1crgAKEEiAPF42BGMtrnwLA6xlwVGp4E REk9M7sYIIinreeBcoh5D9Sqj6X+BCOE/YXiv0tMnsr79rPhiXJYqhQ2dIBeFkBecJb+ iDRJX39ITuvobx3ffY3r4pOI1bJDnvvyoPmMJg0kg/aGFmAEvV4v/3Y+ifvroWnXprWr 1ZcNCxrNKS3ywNZxVzJDsLcatjyEh+6v6M+Xz1NOqsoC4405Qcdy0VnkHtxIDTVrd609 BEGzMrauduf5F6INXkrpVXoL83pvEZ1OSHZTAwv7nesrkdp8/bq/B0a4I+w0o+x33nJo 3SaQ== X-Received: by 10.236.92.196 with SMTP id j44mr18427095yhf.86.1368547356549; Tue, 14 May 2013 09:02:36 -0700 (PDT) Received: from anchor.twiddle.net (50-194-63-110-static.hfc.comcastbusiness.net. [50.194.63.110]) by mx.google.com with ESMTPSA id f71sm27325156yha.8.2013.05.14.09.02.34 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 14 May 2013 09:02:35 -0700 (PDT) Sender: Richard Henderson Message-ID: <51926018.9000606@twiddle.net> Date: Tue, 14 May 2013 09:02:32 -0700 From: Richard Henderson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130402 Thunderbird/17.0.5 MIME-Version: 1.0 To: Max Filippov References: <1368475464-3116-1-git-send-email-green@moxielogic.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2607:f8b0:4002:c02::22b Cc: qemu-trivial@nongnu.org, Anthony Green , qemu-devel@nongnu.org Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH moxie] Fix bug in tlb_fill. X-BeenThere: qemu-trivial@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 May 2013 16:02:43 -0000 On 05/13/2013 01:33 PM, Max Filippov wrote: > memory access at points (1) and (2) can abort the instruction (it did so > b/o the bug, but it may do so legitimately when you add MMU support), > but it has modified REG(1) at those points, which will not be restored. > It's probably worth carrying register modifications in some temporary > until after the point (2). ... Which you'll recall that I pointed out during initial review, AG. r~