From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: Re: + stupid-hack-to-make-mainline-build.patch added to -mm tree Date: Wed, 07 Mar 2007 23:31:53 +0100 Message-ID: <1173306713.24738.861.camel@localhost.localdomain> References: <200703060654.l266sVxr014860@shell0.pdx.osdl.net> <45ED16D2.3000202@vmware.com> <20070306084258.GA15745@elte.hu> <20070306084647.GA16280@elte.hu> <45ED2C82.3080008@vmware.com> <1173178774.24738.311.camel@localhost.localdomain> <45EDD82F.90204@vmware.com> <1173225182.24738.507.camel@localhost.localdomain> <45EE0628.1080108@goop.org> <45EE08E8.2020008@vmware.com> <1173228544.24738.514.camel@localhost.localdomain> <45EE0D10.7070807@vmware.com> <1173230305.24738.529.camel@localhost.localdomain> <45EE1EA3.90803@vmware.com> <1173256666.24738.576.camel@localhost.localdomain> <45EEF966.6060902@goop.org> <1173300032.24738.750.camel@localhost.localdomain> <45EF2991.1020204@goop.org> <1173303639.24738.814.camel@localhost.localdomain> <45EF2FFE.7010705@vmware.com> <1173305670.24738.849.camel@localhost.localdomain> <45EF39F3.8050506@vmware.com> Reply-To: tglx@linutronix.de Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <45EF39F3.8050506@vmware.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.osdl.org Errors-To: virtualization-bounces@lists.osdl.org To: Zachary Amsden Cc: Virtualization Mailing List , john stultz , LKML , Ingo Molnar , akpm@linux-foundation.org List-Id: virtualization@lists.linuxfoundation.org On Wed, 2007-03-07 at 14:17 -0800, Zachary Amsden wrote: > Thomas Gleixner wrote: > > Simply because you _ABUSE_ timer_init_hook() to set it up. Keep it self > > contained and do not impose restrictions on the kernel core code, which > > we have to maintain. > > = > = > But time_init_hook is supposed to be abused. That is its purpose - to = > be a hook for different time devices on SGI Visual Workstation and = > Voyager. And we don't actually abuse it anymore, we just bypass it = > because the default timer init path wants to setup the PIT or the HPET, = > neither of which should be used in paravirt. It is there for those hardware platforms, but using it inside your clock event device is _JUST_ wrong. Please make these things self contained and not relying on whatever time_init_hook() contains. tglx