[PATCH v2] powerpc/fsl-booke: declare tlbcam_index for use in c file

[Liu Yu]

Hi Kumar,

Can I get your ack?
So that I can submit this patch through KVM tree.


> -----Original Message-----
> From: Liu Yu-B13201 
> Sent: Friday, December 19, 2008 10:35 AM
> To: kvm-ppc at vger.kernel.org; linuxppc-dev at ozlabs.org
> Cc: hollisb at us.ibm.com; Gala Kumar-B11780; Piepho 
> Trent-B16872; Wood Scott-B07421; Liu Yu-B13201
> Subject: [PATCH v2] powerpc/fsl-booke: declare tlbcam_index 
> for use in c file
> 
> 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 at 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
> 
>