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

From: Ingo Molnar
Date: Tue Dec 16 2008 - 16:54:35 EST



* Jack Steiner <steiner@xxxxxxx> 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@xxxxxxx>
>
>
> ---
> 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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