From minios-devel-bounces@lists.xenproject.org Fri Mar 24 12:13:25 2017 Return-path: Envelope-to: archives@lists.xenproject.org Delivery-date: Fri, 24 Mar 2017 12:13:25 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1crO5s-0004Gl-Tp; Fri, 24 Mar 2017 12:13:24 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1crO5r-0004GZ-RP; Fri, 24 Mar 2017 12:13:23 +0000 Received: from [85.158.137.68] by server-12.bemta-3.messagelabs.com id DF/83-12861-26D05D85; Fri, 24 Mar 2017 12:13:22 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrDIsWRWlGSWpSXmKPExsVyuP0Ov24879U IgxmTRS3efl3CbPF9y2QmByaPwx+usAQwRrFm5iXlVySwZpzYfZCp4LpJxcHV/5gbGKdpdzFy ckgIGEm8nfiPCcQWEljIKDFnshqILSzgLrH8ejdjFyMHh4iAr0TrOscuRi6gknWsEhNm3GEEq WEWcJXYsfEBmM0moCqx4fopVhCbV8Ba4sanzcwgNgtQfP/M52wgtqhAuMTbxiMsEDWCEidnPm 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server-4.tower-31.messagelabs.com with DHE-RSA-CAMELLIA256-SHA encrypted SMTP; 24 Mar 2017 12:13:19 -0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id C39CEADE1; Fri, 24 Mar 2017 12:13:18 +0000 (UTC) To: Felix Schmoll , Wei Liu References: <2C3140B8-9B96-44F8-A4EA-CDBC07479379@gmail.com> <20170313111439.abjbrw5hyu4eda7y@citrix.com> <20170316162731.l4hzdjky34vsgjkc@citrix.com> <20170321161324.hmsnybth3ktjbzpk@citrix.com> <20170321161442.tpjjtecv6qmsgmev@citrix.com> <20170322085258.s6wcyqgz5vgomsja@citrix.com> <20170322112107.2tkxz6b3kd5emwjf@citrix.com> From: Juergen Gross Message-ID: <68930238-134c-ad07-dd43-e26d42812711@suse.com> Date: Fri, 24 Mar 2017 13:13:17 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Cc: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Subject: Re: [Minios-devel] [GSoC] GSoC Introduction : Fuzzing Xen hypercall interface X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: minios-devel-bounces@lists.xenproject.org Sender: "Minios-devel" SGkgRmVsaXgsCgpPbiAyNC8wMy8xNyAwODozNCwgRmVsaXggU2NobW9sbCB3cm90ZToKPiBPbiBh bm90aGVyIG5vdGUsIHdvdWxkIGl0IGJlIHBvc3NpYmxlIHRvIGFwcGx5IGZvciBhIHNlY29uZCBw cm9qZWN0Cj4gKEFkZGluZyBGbG9hdGluZyBQb2ludCBzdXBwb3J0IHRvIE1pbmktT1MpIHdpdGhv dXQgaGF2aW5nIHRvIGRvIGFub3RoZXIKPiBwYXRjaD8KClN1cmUuIEluIGNhc2UgYm90aCBwcm9q ZWN0cyBnZXQgc2VsZWN0ZWQgeW91IGhhdmUgdG8gcGljayBvbmUgb2YgdGhlbS4KClRoZSBwYXRj aCB5b3UndmUgc2VudCBpcyBmaW5lIGZvciBib3RoLgoKPiBJIGFkZGVkIEp1ZXJnZW4gR3Jvc3Mg aW4gdGhlIHJlY2lwaWVudHMgZm9yIHRoaXMuIEknZCBzdGlsbCBiZSBwcmVmZXIKPiB0aGUgZnV6 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([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1crO5s-0004Gl-Tp; Fri, 24 Mar 2017 12:13:24 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1crO5r-0004GZ-RP; Fri, 24 Mar 2017 12:13:23 +0000 Received: from [85.158.137.68] by server-12.bemta-3.messagelabs.com id DF/83-12861-26D05D85; Fri, 24 Mar 2017 12:13:22 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrDIsWRWlGSWpSXmKPExsVyuP0Ov24879U IgxmTRS3efl3CbPF9y2QmByaPwx+usAQwRrFm5iXlVySwZpzYfZCp4LpJxcHV/5gbGKdpdzFy ckgIGEm8nfiPCcQWEljIKDFnshqILSzgLrH8ejdjFyMHh4iAr0TrOscuRi6gknWsEhNm3GEEq WEWcJXYsfEBmM0moCqx4fopVhCbV8Ba4sanzcwgNgtQfP/M52wgtqhAuMTbxiMsEDWCEidnPm EBmc8pEChxqkURYqS6xJ95l5ghbHmJ7W/nME9g5JuFpGMWkrJZSMoWMDKvYlQvTi0qSy3SNdZ LKspMzyjJTczM0TU0MNbLTS0uTkxPzUlMKtZLzs/dxAgMOQYg2MHY/MXpEKMkB5OSKK/btisR QnxJ+SmVGYnFGfFFpTmpxYcYZTg4lCR4lbmvRggJFqWmp1akZeYAgx8mLcHBoyTC2wSS5i0uS 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mx2.suse.de (Postfix) with ESMTP id C39CEADE1; Fri, 24 Mar 2017 12:13:18 +0000 (UTC) To: Felix Schmoll , Wei Liu References: <2C3140B8-9B96-44F8-A4EA-CDBC07479379@gmail.com> <20170313111439.abjbrw5hyu4eda7y@citrix.com> <20170316162731.l4hzdjky34vsgjkc@citrix.com> <20170321161324.hmsnybth3ktjbzpk@citrix.com> <20170321161442.tpjjtecv6qmsgmev@citrix.com> <20170322085258.s6wcyqgz5vgomsja@citrix.com> <20170322112107.2tkxz6b3kd5emwjf@citrix.com> From: Juergen Gross Message-ID: <68930238-134c-ad07-dd43-e26d42812711@suse.com> Date: Fri, 24 Mar 2017 13:13:17 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Cc: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Subject: Re: [Minios-devel] [GSoC] GSoC Introduction : Fuzzing Xen hypercall interface X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: 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<20170321161324.hmsnybth3ktjbzpk@citrix.com> <20170321161442.tpjjtecv6qmsgmev@citrix.com> <20170322085258.s6wcyqgz5vgomsja@citrix.com> <20170322112107.2tkxz6b3kd5emwjf@citrix.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) Cc: jgross@suse.com, xen-devel@lists.xenproject.org, Wei Liu , minios-devel@lists.xenproject.org Subject: Re: [Minios-devel] [GSoC] GSoC Introduction : Fuzzing Xen hypercall interface X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: minios-devel-bounces@lists.xenproject.org Sender: "Minios-devel" T24gRnJpLCBNYXIgMjQsIDIwMTcgYXQgMDg6MzQ6NDZBTSArMDEwMCwgRmVsaXggU2NobW9sbCB3 cm90ZToKPiBIaSwKPiAKPiB0aGlzIHRpbWUgZm9yIHJlYWw6Cj4gCj4gc28gSSd2ZSBiZWVuIHJl 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In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) Cc: jgross@suse.com, xen-devel@lists.xenproject.org, Wei Liu , minios-devel@lists.xenproject.org Subject: Re: [Minios-devel] [GSoC] GSoC Introduction : Fuzzing Xen hypercall interface X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: minios-devel-bounces@lists.xenproject.org Sender: "Minios-devel" T24gRnJpLCBNYXIgMjQsIDIwMTcgYXQgMDg6MzQ6NDZBTSArMDEwMCwgRmVsaXggU2NobW9sbCB3 cm90ZToKPiBIaSwKPiAKPiB0aGlzIHRpbWUgZm9yIHJlYWw6Cj4gCj4gc28gSSd2ZSBiZWVuIHJl YWRpbmcgdXAgb24gdGhlIHRhc2sgcXVpdGUgYSBiaXQgbm93IGFuZCBJJ2QgYmUgdGhhbmtmdWwg aWYKPiB5b3UgY291bGQgY2xhcmlmeSB3aGF0IGV4YWN0bHkgeW91J3JlIGxvb2tpbmcgZm9yIHdp dGggdGhlIGV4ZWN1dGlvbiBwYXRoLgo+IFRoZSBBRkwtZnV6emVyIHNlZW1zIHRvIG1ha2UgdXNl 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+0200 From: Samuel Thibault To: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Message-ID: <20170329193939.mrl5t3ji3nzfvkb6@var.youpi.perso.aquilenet.fr> Mail-Followup-To: Samuel Thibault , minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Disposition: inline Organization: I am not organized User-Agent: NeoMutt/20170113 (1.7.2) Subject: Re: [Minios-devel] [GSoc] Adding Floating Point support to Mini-OS X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: minios-devel-bounces@lists.xenproject.org Sender: "Minios-devel" SGVsbG8sCgpGZWxpeCBTY2htb2xsLCBvbiBtZXIuIDI5IG1hcnMgMjAxNyAyMDo1MzoxNCArMDIw MCwgd3JvdGU6Cj4gLVdoaWxlIGltcGxlbWVudGluZyBvdXIgb3duIGtlcm5lbCBsYXN0IHNlbWVz 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[127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5leMyw6q1YRi; Wed, 29 Mar 2017 21:39:40 +0200 (CEST) Received: from var.youpi.perso.aquilenet.fr (unknown [IPv6:2a01:cb19:181:c200:3602:86ff:fe2c:6a19]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 3AF79B5C8; Wed, 29 Mar 2017 21:39:40 +0200 (CEST) Received: from samy by var.youpi.perso.aquilenet.fr with local (Exim 4.88) (envelope-from ) id 1ctJRT-0003ya-1O; Wed, 29 Mar 2017 21:39:39 +0200 Date: Wed, 29 Mar 2017 21:39:39 +0200 From: Samuel Thibault To: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Message-ID: <20170329193939.mrl5t3ji3nzfvkb6@var.youpi.perso.aquilenet.fr> Mail-Followup-To: Samuel Thibault , minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Disposition: inline Organization: I am not organized User-Agent: NeoMutt/20170113 (1.7.2) Subject: Re: [Minios-devel] [GSoc] Adding Floating Point support to Mini-OS X-BeenThere: minios-devel@lists.xenproject.org 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network); 30 Mar 2017 05:10:32 -0000 Received: from mx2.suse.de (HELO mx2.suse.de) (195.135.220.15) by server-11.tower-21.messagelabs.com with DHE-RSA-CAMELLIA256-SHA encrypted SMTP; 30 Mar 2017 05:10:32 -0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 0443BAAB4; Thu, 30 Mar 2017 05:10:32 +0000 (UTC) To: Felix Schmoll References: From: Juergen Gross Message-ID: <551d846b-cd61-13dc-87d5-fd1d04e53c79@suse.com> Date: Thu, 30 Mar 2017 07:10:30 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Cc: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Subject: Re: [Minios-devel] [GSoc] Adding Floating Point support to Mini-OS X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: List-Help: 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y18so63953376itc.1; Wed, 29 Mar 2017 11:53:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=2eNThkaIn/Z7JTQqGXcBaHb2H/uLy842PjlYbQ4BTyc=; b=qCkRqBEdK2hVoGyertXtOadq/uWDBbM6iubOX+mKs5AsaSRYZMrO6tflLf0hgqZaSC dYsRgoxoGbC/ErdZ53uKYw8TtJYkB0satnQ+0FHUATIy7LKRrvpXIsDufdVAWXirt5+g qGORMNNES4lEQc/w75j1TTXuibLYKdEeDPmBOWI4f+8giCnBXjYZ4yDXYjvRZufp/uy6 Noa8CfIbjVAkLDiHfCm2tZ8SYhH+7Hc7BxHr/ze1qMxYHRkMwuG1O9BwV2WwkQS+VqM6 dLgXAjBAAfod05ggpSdYrxgxTBlqDXvI9u5zyTAOQ5WqAA0ARR68U76IZeg3jTZ+dfy3 BsXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=2eNThkaIn/Z7JTQqGXcBaHb2H/uLy842PjlYbQ4BTyc=; b=dSUDKtJoyutjfdZ0jDf3kSd9pmQygDI7Jzux0LIzSx46RZf5cA0YKo/VXk/Jn7rNu9 O3EsaTBswmHZDvqVzGe0G0nP42FK8iXCQd8o3cMRT7gFLzbEDSLOmV5KWJqTHU4ICYAD Aac8ZRosF3tyXcS1NrGu2Wyyf7wEEnqEwqMLbEFz75Y1FwbhdlK80FJ07fdO6hp6RdDu +G9GyFtQdRXKysgnqHUxranEyP53p+cV5EfKd1TbMvEeWZYS9NKK61tk+ooL5n5rLfFR XXjLzolPCAAUnzfnRMu164e0rautuor90rrgEvyhH6EJwCI6479Bsm2brEO+8rRg5x/g 5GLA== X-Gm-Message-State: AFeK/H0fawvD9vW9r3noIUNax7b9ReOZRvCawlir0FrlgF6JTEfqtqxpb88Ela/9DCxQfoyWwK/wYZStXvetNw== X-Received: by 10.36.108.144 with SMTP id w138mr2342479itb.67.1490813635377; Wed, 29 Mar 2017 11:53:55 -0700 (PDT) MIME-Version: 1.0 Received: by 10.107.19.28 with HTTP; Wed, 29 Mar 2017 11:53:14 -0700 (PDT) From: Felix Schmoll Date: Wed, 29 Mar 2017 20:53:14 +0200 Message-ID: To: jgross@suse.com X-Mailman-Approved-At: Thu, 30 Mar 2017 09:35:16 +0000 Cc: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Subject: [Minios-devel] [GSoc] Adding Floating Point support to Mini-OS X-BeenThere: minios-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Mini-os development list List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============9169531592357345333==" Errors-To: minios-devel-bounces@lists.xenproject.org Sender: "Minios-devel" --===============9169531592357345333== Content-Type: multipart/alternative; boundary=001a113f88c829bf1a054be31937 --001a113f88c829bf1a054be31937 Content-Type: text/plain; charset=UTF-8 Hi, while looking at this some more I came to the following questions/assumptions, so I'd be grateful if you could shortly address them: -While implementing our own kernel last semester me and my team-mate came to believe that pusha/popa were faster that pushing/popping the individual registers, since it is just a single command. The Mini-OS kernel however does the latter. Is that a conscience performance-trade for something or did we just underly a misconception, in that it compiles to the same thing in the end? -Lazy floating point register saving is similar to Copy-on-write, is that correct? -There is nothing preventing me from using some floating-point library for the user-space test program, right? I'd also appreciate if you could have a quick glance my updated proposal (on the GSoC portal) and give me some more feedback on it. Thanks Felix --001a113f88c829bf1a054be31937 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi,

while looking at this some more I c= ame to the following questions/assumptions, so I'd be grateful if you c= ould shortly address them:

-While implementing our= own kernel last semester me and my team-mate came to believe that pusha/po= pa were faster that pushing/popping the individual registers, since it is j= ust a single command. The Mini-OS kernel however does the latter. Is that a= conscience performance-trade for something or did we just underly a miscon= ception, in that it compiles to the same thing in the end?

-Lazy floating point register saving is similar to Copy-on-write, = is that correct?

-There is nothing preventing me f= rom using some floating-point library for the user-space test program, righ= t?

I'd also appreciate if you could have a qui= ck glance my updated proposal (on the GSoC portal) and give me some more fe= edback on it.

Thanks
Felix
--001a113f88c829bf1a054be31937-- --===============9169531592357345333== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTWluaW9zLWRl dmVsIG1haWxpbmcgbGlzdApNaW5pb3MtZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6 Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9jZ2ktYmluL21haWxtYW4vbGlzdGluZm8vbWluaW9zLWRl dmVs --===============9169531592357345333==-- From minios-devel-bounces@lists.xenproject.org Thu Mar 30 09:35:18 2017 Return-path: Envelope-to: archives@lists.xenproject.org Delivery-date: Thu, 30 Mar 2017 09:35:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ctWUA-0000lN-9s; Thu, 30 Mar 2017 09:35:18 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ctIjG-0002w6-2f; Wed, 29 Mar 2017 18:53:58 +0000 Received: from [193.109.254.147] by server-4.bemta-6.messagelabs.com id 59/1D-03012-5C20CD85; 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banners=-,-,- X-VirusChecked: Checked Received: (qmail 59943 invoked from network); 29 Mar 2017 18:53:56 -0000 Received: from mail-it0-f46.google.com (HELO mail-it0-f46.google.com) (209.85.214.46) by server-3.tower-27.messagelabs.com with AES128-GCM-SHA256 encrypted SMTP; 29 Mar 2017 18:53:56 -0000 Received: by mail-it0-f46.google.com with SMTP id y18so63953376itc.1; Wed, 29 Mar 2017 11:53:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=2eNThkaIn/Z7JTQqGXcBaHb2H/uLy842PjlYbQ4BTyc=; b=qCkRqBEdK2hVoGyertXtOadq/uWDBbM6iubOX+mKs5AsaSRYZMrO6tflLf0hgqZaSC dYsRgoxoGbC/ErdZ53uKYw8TtJYkB0satnQ+0FHUATIy7LKRrvpXIsDufdVAWXirt5+g qGORMNNES4lEQc/w75j1TTXuibLYKdEeDPmBOWI4f+8giCnBXjYZ4yDXYjvRZufp/uy6 Noa8CfIbjVAkLDiHfCm2tZ8SYhH+7Hc7BxHr/ze1qMxYHRkMwuG1O9BwV2WwkQS+VqM6 dLgXAjBAAfod05ggpSdYrxgxTBlqDXvI9u5zyTAOQ5WqAA0ARR68U76IZeg3jTZ+dfy3 BsXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; 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boundary="===============9169531592357345333==" Errors-To: minios-devel-bounces@lists.xenproject.org Sender: "Minios-devel" --===============9169531592357345333== Content-Type: multipart/alternative; boundary=001a113f88c829bf1a054be31937 --001a113f88c829bf1a054be31937 Content-Type: text/plain; charset=UTF-8 Hi, while looking at this some more I came to the following questions/assumptions, so I'd be grateful if you could shortly address them: -While implementing our own kernel last semester me and my team-mate came to believe that pusha/popa were faster that pushing/popping the individual registers, since it is just a single command. The Mini-OS kernel however does the latter. Is that a conscience performance-trade for something or did we just underly a misconception, in that it compiles to the same thing in the end? -Lazy floating point register saving is similar to Copy-on-write, is that correct? -There is nothing preventing me from using some floating-point library for the user-space test program, right? I'd also appreciate if you could have a quick glance my updated proposal (on the GSoC portal) and give me some more feedback on it. Thanks Felix --001a113f88c829bf1a054be31937 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi,

while looking at this some more I c= ame to the following questions/assumptions, so I'd be grateful if you c= ould shortly address them:

-While implementing our= own kernel last semester me and my team-mate came to believe that pusha/po= pa were faster that pushing/popping the individual registers, since it is j= ust a single command. The Mini-OS kernel however does the latter. Is that a= conscience performance-trade for something or did we just underly a miscon= ception, in that it compiles to the same thing in the end?

-Lazy floating point register saving is similar to Copy-on-write, = is that correct?

-There is nothing preventing me f= rom using some floating-point library for the user-space test program, righ= t?

I'd also appreciate if you could have a qui= ck glance my updated proposal (on the GSoC portal) and give me some more fe= edback on it.

Thanks
Felix
--001a113f88c829bf1a054be31937-- --===============9169531592357345333== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTWluaW9zLWRl dmVsIG1haWxpbmcgbGlzdApNaW5pb3MtZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6 Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9jZ2ktYmluL21haWxtYW4vbGlzdGluZm8vbWluaW9zLWRl dmVs --===============9169531592357345333==--