From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: [PATCH v2 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Date: Tue, 15 Dec 2015 16:48:30 +0100 Message-ID: <20151215154830.GF26000@pd.tnic> References: <1447970147-1733-1-git-send-email-boris.ostrovsky@oracle.com> <1447970147-1733-2-git-send-email-boris.ostrovsky@oracle.com> <56703001.9010205@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <56703001.9010205@oracle.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Boris Ostrovsky Cc: konrad.wilk@oracle.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, mingo@redhat.com, david.vrabel@citrix.com, luto@kernel.org, hpa@zytor.com, xen-devel@lists.xenproject.org, tglx@linutronix.de List-Id: virtualization@lists.linuxfoundation.org T24gVHVlLCBEZWMgMTUsIDIwMTUgYXQgMTA6MjE6MzdBTSAtMDUwMCwgQm9yaXMgT3N0cm92c2t5 IHdyb3RlOgo+IEkga25vdyB0aGlzIGhhcyBiZWVuIGluIHRoZSB0aXAgdHJlZSAtLS0gd2hlbiBk byB5b3UgdGhpbmsgdGhpcyB3aWxsIGdvCj4gTGludXMgdHJlZT8gSW4gdGhlIDQuNCB0aW1lZnJh bWU/CgpJdCBpcyBxdWV1ZWQgZm9yIDQuNSBjdXJyZW50bHkuCgo+IFhlbiAzMi1iaXQgUFYgZ3Vl c3RzIGFyZSBicm9rZW4gd2l0aG91dCB0aGlzLgoKU28gdGhpcyBuZWVkcyB0byBnbyBpbnRvIDQu NCBvciBldmVuIGVhcmxpZXI/IFNpbmNlIDVmMzEwZjczOWI0YyB3ZW50CmludG8gNC40LCBJJ2Qg dGhpbmsgNC40IG9ubHkgZm9yIHRoaXMgZml4IHRvbz8gWWVzPwoKVGhhbmtzLgoKLS0gClJlZ2Fy ZHMvR3J1c3MsCiAgICBCb3Jpcy4KClNVU0UgTGludXggR21iSCwgR0Y6IEZlbGl4IEltZW5kw7Zy ZmZlciwgSmFuZSBTbWl0aGFyZCwgR3JhaGFtIE5vcnRvbiwgSFJCIDIxMjg0IChBRyBOw7xybmJl cmcpCi0tIApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpW aXJ0dWFsaXphdGlvbiBtYWlsaW5nIGxpc3QKVmlydHVhbGl6YXRpb25AbGlzdHMubGludXgtZm91 bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlz dGluZm8vdmlydHVhbGl6YXRpb24= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753994AbbLOPsj (ORCPT ); Tue, 15 Dec 2015 10:48:39 -0500 Received: from mx2.suse.de ([195.135.220.15]:39984 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753340AbbLOPsh (ORCPT ); Tue, 15 Dec 2015 10:48:37 -0500 Date: Tue, 15 Dec 2015 16:48:30 +0100 From: Borislav Petkov To: Boris Ostrovsky Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, david.vrabel@citrix.com, konrad.wilk@oracle.com, luto@kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH v2 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Message-ID: <20151215154830.GF26000@pd.tnic> References: <1447970147-1733-1-git-send-email-boris.ostrovsky@oracle.com> <1447970147-1733-2-git-send-email-boris.ostrovsky@oracle.com> <56703001.9010205@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <56703001.9010205@oracle.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 15, 2015 at 10:21:37AM -0500, Boris Ostrovsky wrote: > I know this has been in the tip tree --- when do you think this will go > Linus tree? In the 4.4 timeframe? It is queued for 4.5 currently. > Xen 32-bit PV guests are broken without this. So this needs to go into 4.4 or even earlier? Since 5f310f739b4c went into 4.4, I'd think 4.4 only for this fix too? Yes? Thanks. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --