linux-kernel - [PATCH 0/7] x86: UV runtime bios calls

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Date:	Wed, 15 Oct 2008 15:10:58 -0500
From:	Russ Anderson <rja@....com>
To:	Ingo Molnar <mingo@...e.hu>, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Cc:	Huang Ying <ying.huang@...el.com>, Jack Steiner <steiner@....com>,
	Russ Anderson <rja@....com>
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@....com
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