On Friday, February 14, 2014 10:16:41 PM Thomas Gleixner wrote: > 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.
What exactly do you try to achieve? I cannot imagine a use-case where RSDP and XSDT overriding would help you. Have you tried the current mechanism to override tables? What is missing and for what do you need it for? I need more context, maybe I can help then. Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
