Re: [Xen-devel] [PATCH v2 3/8] tools: arm: move magic pfns out of guest RAM region

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 25/04/14 12:22, Ian Campbell wrote:
> diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h
> index dd53c94..a94d16b 100644
> --- a/xen/include/public/arch-arm.h
> +++ b/xen/include/public/arch-arm.h
> @@ -375,6 +375,8 @@ typedef uint64_t xen_callback_t;
>   #define GUEST_GNTTAB_BASE 0xb0000000ULL
>   #define GUEST_GNTTAB_SIZE 0x00020000ULL
>
> +#define GUEST_MAGIC_BASE  0xc0000000ULL
> +
I'm wondering if we need to move NR_MAGIC_PAGES or add a comment in 
arch-arm.h if someone wants to bump the number page magic page.
Or perhaps a BUG_ON in libxc to check at compilation time the hole is 
large enought to hold all special pages.
--
Julien Grall

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