linux-kernel - Re: [PATCH] x86 : UV fix for global physical addresses

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Date:	Tue, 16 Dec 2008 22:54:14 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jack Steiner <steiner@....com>
Cc:	tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86 : UV fix for global physical addresses


* Jack Steiner <steiner@....com> wrote:

> This fixes a UV bug related to generating global memory addresses
> on partitioned systems. Partition systems do not have physical memory
> at address 0. Instead, a chunk of high memory is remapped by the chipset
> so that it appears to be at address 0. This remapping is INVISIBLE to most
> of the OS. The only OS functions that need to be aware of the remaping are
> functions that directly interface to the chipset. The GRU is one example.
> 
> Also, delete a couple of unused macros related to global memory addresses.
> 
> Signed-off-by: Jack Steiner <steiner@....com>
> 
> 
> ---
>  arch/x86/include/asm/uv/uv_hub.h |   16 ++--------------
>  arch/x86/kernel/genx2apic_uv_x.c |    3 +--
>  2 files changed, 3 insertions(+), 16 deletions(-)

applied to tip/x86/uv, thanks Jack!

	Ingo
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