RE: [Fastboot] Re: [BROKEN PATCH] kexec for ia64

Tolentino, Matthew E
2004-08-05T19:44:05Z

>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?

matt