Messages in this thread |  | | Date | Fri, 14 Feb 2014 22:16:41 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501 |
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On Fri, 14 Feb 2014, H. Peter Anvin wrote: > On 02/14/2014 11:59 AM, Thomas Gleixner wrote: > > On Fri, 14 Feb 2014, H. Peter Anvin wrote: > >> On 02/14/2014 11:15 AM, Thomas Gleixner wrote: > >>> I'm fine with ACPI tables if we can provide simple means for embedded > >>> users to load one via grub or just attach it to the kernel image. > >> > >> That already exists, see Documentation/acpi/initrd_table_override.txt. > > > > That requires, that you have already ACPI tables. > > > > ACPI_SIG_RSDP cannot be overridden and that's the base table you need > > to get ACPI going in the first place. So we need support for that and > > probably for storing the tables at some non canonical place. > > > > Well, the RSDP and RSDT/XSDT are nothing but pointers to other tables, > so if explicitly overridden I'm not sure if one actually would need > them. That doesn't mean our current code will work without them, though.
I tried once to overload all of the tables, but failed miserably in the ACPI dungeon. RSDP was the major pain point IIRC.
Thanks,
tglx
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