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From: Kumar Gala <kumar.gala@freescale.com>
To: Liu Yu <Yu.Liu@freescale.com>, Hollis Blanchard <hollisb@us.ibm.com>
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Subject: Re: [PATCH v2] powerpc/fsl-booke: declare tlbcam_index for use in c
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Date: Wed, 7 Jan 2009 09:09:04 -0600
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On Dec 18, 2008, at 8:34 PM, Liu Yu wrote:

> KVM on E500 platform currently utilize TLB1 entries without  
> bothering host,
> that is using unused TLB1 entries.
>
> So, KVM needs to read tlbcam_index to know exactly
> which TLB1 entry is unused by host.
>
> Signed-off-by: Liu Yu <yu.liu@freescale.com>
> ---
> [v2]
> Remove num_tlbcam_entries declare and read from SPRN_TLB1CFG in KVM  
> instead.
>
> arch/powerpc/include/asm/mmu-fsl-booke.h |    2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/mmu-fsl-booke.h b/arch/powerpc/ 
> include/asm/mmu-fsl-booke.h
> index 925d93c..c86af6c 100644
> --- a/arch/powerpc/include/asm/mmu-fsl-booke.h
> +++ b/arch/powerpc/include/asm/mmu-fsl-booke.h
> @@ -73,6 +73,8 @@
>
> #ifndef __ASSEMBLY__
>
> +extern unsigned int tlbcam_index;
> +
> typedef struct {
> 	unsigned long id;
> 	unsigned long vdso_base;
> -- 
> 1.5.4

Acked-by: Kumar Gala <galak@kernel.crashing.org>

(Hollis will you deal with sending this via the KVM tree?)

- k