Re: [kvm-ppc-devel] [kvm-devel] [PATCH] RFC: Use CONFIG_HAS_IOPORT

[Hollis Blanchard <hollisb@us.ibm.com>]

Actually, (now that I try to build with it :) this doesn't work for
PowerPC, which defines (or rather, doesn't not define)
CONFIG_HAS_IOPORT.

So I guess a callout to arch code will do. I'll send a patch sometime.

-- 
Hollis Blanchard
IBM Linux Technology Center

On Mon, 2007-12-03 at 16:14 -0600, Hollis Blanchard wrote:
> Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
> ---
> pio_data is obviously arch-specific, but we might be able to get by with an
> ifdef in kvm_vcpu_nopage() rather than needing an arch hook. Thoughts?
> 
> 1 file changed, 2 insertions(+)
> drivers/kvm/kvm_main.c |    2 ++
> 
> 
> diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
> --- a/drivers/kvm/kvm_main.c
> +++ b/drivers/kvm/kvm_main.c
> @@ -674,8 +674,10 @@ static struct page *kvm_vcpu_nopage(stru
>  	pgoff = ((address - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
>  	if (pgoff = 0)
>  		page = virt_to_page(vcpu->run);
> +#ifdef CONFIG_HAS_IOPORT
>  	else if (pgoff = KVM_PIO_PAGE_OFFSET)
>  		page = virt_to_page(vcpu->pio_data);
> +#endif /* CONFIG_HAS_IOPORT */
>  	else
>  		return NOPAGE_SIGBUS;
>  	get_page(page);
> 
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