From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CbPU8-0006hd-Fi for user-mode-linux-devel@lists.sourceforge.net; Mon, 06 Dec 2004 12:29:28 -0800 Received: from smtp004.mail.ukl.yahoo.com ([217.12.11.35]) by sc8-sf-mx1.sourceforge.net with smtp (Exim 4.41) id 1CbPU7-0000jO-H9 for user-mode-linux-devel@lists.sourceforge.net; Mon, 06 Dec 2004 12:29:28 -0800 From: Blaisorblade Subject: Re: [uml-devel] Patchset to implement PTRACE_SYSEMU_SINGLESTEP References: <419517A4.7020700@fujitsu-siemens.com> In-Reply-To: <419517A4.7020700@fujitsu-siemens.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200412062133.05798.blaisorblade_spam@yahoo.it> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 6 Dec 2004 21:33:05 +0100 To: user-mode-linux-devel@lists.sourceforge.net Cc: Bodo Stroesser , Jeff Dike On Friday 12 November 2004 21:05, Bodo Stroesser wrote: > Attached are several patches. Four of them (patch-2.6.*-skas-v7-*) > implement PTRACE_SYSEMU_SINGLESTEP in the host. They are based on > linux-2.6.7-vanilla + host-skas3-2.6.7-v7.patch (resp. the 2.6.9 versions). > The "-reorganize" patches are a rework of the current patch without > changing the functionality. The "add-SYSEMU_SINGLESTEP" then implement the > new features. Please note: the differences between 2.6.7 and 2.6.9 are > dependent on the different handling of syscall singlestepping in the two > versions. > To have UML using the new feature, there are two further patches named > patch-SYSEMU_SINGLESTEP-*. They are based on linux-2.6.9-vanilla + > all bb2-patches + patch-sysemu-tt + patch-fix-uml-hang-on-2.6.9-host. > To have all the patches complete, the latter two are attached also. > I tested on host 2.6.7 and host 2.6.9 with SKAS and TT mode. Currently I > don't know any problem with it. I have a problem... in recent host kernels, isn't SINGLESTEP also trapping for syscall instructions? Also, you say that SINGLESTEP_SYSEMU does automatic syscall overwriting with -1 or emulates that - I suspect it being in the reorganize patches, but you don't mention it in the changelogs here, only about the UML patches. So, I'd personally accept only the -reorganize ones and hold on the rest - which is probably achieved with mainline SINGLESTEP fixes in 2.6.9 (or which could be discussed). Sorry for being so late (I'd say "Call me a lamer" :-) ) in discussing this, but I hadn't the time to study patches and realize this. > Bodo -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel