From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: [Xen-devel] [PATCH v2 3/3] paravirt: rename paravirt_enabled to paravirt_legacy Date: Mon, 8 Feb 2016 18:13:05 +0100 Message-ID: <20160208171305.GN28980@pd.tnic> References: <56B8B6BF.6030007@oracle.com> <20160208155507.GF28980@pd.tnic> <56B8BCDB.9040701@citrix.com> <56B8BE58.6070003@oracle.com> <56B8C1BC.9040603@citrix.com> <56B8C2C8.8050406@oracle.com> <20160208163526.GI28980@pd.tnic> <56B8C490.1060004@citrix.com> <20160208164545.GJ28980@pd.tnic> <56B8C7EC.3090403@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <56B8C7EC.3090403@citrix.com> Sender: linux-kernel-owner@vger.kernel.org To: Andrew Cooper Cc: Boris Ostrovsky , X86 ML , david.e.box@intel.com, Andrey Ryabinin , Lv Zheng , Jan Beulich , "H. Peter Anvin" , qiuxishi@huawei.com, cocci@systeme.lip6.fr, Xen Devel , Joerg Roedel , "Rafael J. Wysocki" , Robert Moore , Ingo Molnar , Andrey Ryabinin , Mauro Carvalho Chehab , "Luis R. Rodriguez" , Rusty Russell , Thomas Gleixner , mcb30@ipxe.org, Juergen Gross , "linux-kernel@vger.kernel.org" , Andy Lutomirski , "Luis R. Rodriguez" , long List-Id: xen-devel@lists.xenproject.org On Mon, Feb 08, 2016 at 04:53:00PM +0000, Andrew Cooper wrote: > As an alternative check which should be doable this early on, peeking in > the head of hypercall_page should work. If Linux was booted as a PV > guest, the hypercall_page will have been constructed by the domain > builder, and won't have 0x90's in it. Good to know, we might need it for something. :) Thanks. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.