Re: [PATCH] x86,setup: add serial_console_port_base in boot_params

From: Cyrill Gorcunov
Date: Sat Jul 31 2010 - 17:32:24 EST

On Sat, Jul 31, 2010 at 02:02:53PM -0700, H. Peter Anvin wrote:
> On 07/31/2010 11:32 AM, Cyrill Gorcunov wrote:
> >>
> >> No, this is the internal part of the boot protocol, so it's not an issue.
> >>
> >
> > Peter, I didn't mean any issue here, I meant that bootloaders don't know about
> > this field yet and they will have to update own sources to pass port value
> > at proper place of boot params. Or I miss something?
> >
> Boot loaders that use the 16-bit entry point are unaffected.
> Boot loaders which use the 32-bit entry point but properly clears the
> zero page simply will not have the feature.
> Boot loaders which use the 32-bit entry point but doesn't clear the zero
> page are broken.
> -hpa

Well, Peter, seems I messed boot params with setup header. So I don't see
any user of this field then, hmm...

-- Cyrill
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