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Re: [Xen-devel] [PATCH v4 01/14] x86/boot: enumerate documentation for the x86 hardware_subarch

On Wed, 2016-04-06 at 17:06 -0700, Luis R. Rodriguez wrote:
> Although hardware_subarch has been in place since the x86 boot
> protocol 2.07 it hasn't been used much. Enumerate current possible
> values to avoid misuses and help with semantics later at boot
> time should this be used further.
> These enums should only ever be used by architecture x86 code,
> and all that code should be well contained and compartamentalized,
> clarify that as well.


> + * @X86_SUBARCH_PC: Should be used if the hardware is enumerable
> using standard
> + *   PC mechanisms (PCI, ACPI) and doesn't need a special boot
> flow.
> + * @X86_SUBARCH_LGUEST: Used for x86 hypervisor demo, lguest
> + * @X86_SUBARCH_XEN: Used for Xen guest types which follow the PV
> boot path,
> + *   which start at asm startup_xen() entry point and later
> jump to the C
> + *   xen_start_kernel() entry point.
> + * @X86_SUBARCH_INTEL_MID: Used for Intel MID (Mobile Internet
> Device) platform
> + *   systems which do not have the PCI legacy interfaces.
> + * @X86_SUBARCH_CE4100: Used for Intel CE media processor (CE4100)
> SOC for

I think 'SoC' (without quotes) will be better.

> + *   for settop boxes and media devices, the use of a subarch
> for CE4100
> + *   is more of a hack...

Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy

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