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Subject[PATCH 0/7] x86: UV runtime bios calls
[PATCH 0/7] x86: UV runtime bios calls

Resubmit four patches (per Ingo's request) with three additional patches.

Purpose:
Create an interface to allow calls into bios to return platform
specific information. The interface adds a new EFI table entry
for UV. EFI provides a mechanism for defining function pointers
to firmware routines. This patchset builds on the EFI mechanism
to provide access to those firmware routines for UV.

Patches:
[1/7] uv_efi_bios: Look for UV entry in EFI tables.

[2/7] uv_bios_common: Add the EFI callback function using the EFI
table entry. Create associated wrapper code.
Initialize UV system table entry info at boot time.

[3/7] uv_bios_call_partition: Add call to get partitioning related info.

[4/7] uv_sysfs: Create sysfs entrys in /sys/firmware/sgi_uv/ for
partitioning related information.

[5/7] uv_bios_call_watchlist: Access UV watchlists.
[6/7] uv_bios_call_memprotect: Modify UV memory protection.
[7/7] uv_bios_call_reserve_page: Access UV reserve page.

Implementation comments:

This patch adds a new EFI entry type (uv_systab).

The location in sysfs (/sys/firmware/sgi_uv/) is based on
community feedback. The interface is documented in
Documentation/ABI/testing/sysfs-firmware-sgi_uv.

If EFI is not configured (CONFIG_EFI), the calls will return -ENOSYS.
If run on a system with a bios that does not support EFI UV, the
calls will return -ENOSYS.

Paul Jackson assisted in the development of this code.
--
Russ Anderson, OS RAS/Partitioning Project Lead
SGI - Silicon Graphics Inc rja@sgi.com


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