From: Ingo Molnar <mingo@elte.hu>
To: Jack Steiner <steiner@sgi.com>
Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86 : UV fix for global physical addresses
Date: Tue, 16 Dec 2008 22:54:14 +0100 [thread overview]
Message-ID: <20081216215414.GX14787@elte.hu> (raw)
In-Reply-To: <20081212205040.GA25739@sgi.com>
* Jack Steiner <steiner@sgi.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@sgi.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
prev parent reply other threads:[~2008-12-16 21:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-12 20:50 [PATCH] x86 : UV fix for global physical addresses Jack Steiner
2008-12-16 21:54 ` Ingo Molnar [this message]
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