From mboxrd@z Thu Jan 1 00:00:00 1970 From: ebiederm@xmission.com (Eric W. Biederman) Date: Thu, 05 Aug 2004 21:29:09 +0000 Subject: Re: [Fastboot] Re: [BROKEN PATCH] kexec for ia64 Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Tolentino, Matthew E" Cc: Grant Grundler , "Randy.Dunlap" , fastboot@osdl.org, linux-ia64@vger.kernel.org, Jesse Barnes , linux-kernel@vger.kernel.org "Tolentino, Matthew E" writes: > >On Wed, Aug 04, 2004 at 08:14:55PM -0600, Eric W. Biederman wrote: > >> VGA/serial console devices rarely need to do be bus masters so they > >> should be fine. > > > >yeah - you are right. I wasn't thinking. > >Can anyone comment on UGA or other console devices? > > UGA is essentially a PCI device. It uses the EFI PCI I/O > protocol which gets glued to the kernels pci layer...at least in > a prototype. > > I haven't looked at the latest kexec patch. How is it handling > the call to EFI's SetVirtualAddressMap()? Is it part of the config > associated with kexec to do efi calls in physical mode only so that > it doesn't have to contend with potential follow-on invocations > resultant from "the next" kernel's initialization? It should be. So far all I have seen are tentative ia64 kexec patches. Eric