[Crash-utility] [PATCH] book3s/ppc64: Lower the max real address to 53 bits

[Dave Anderson]

Thanks Hari -- the patch is queued for crash-7.2.0:

  https://github.com/crash-utility/crash/commit/d7b43c2a527503415dd66dff20daec01c139c6f1
  
Dave


----- Original Message -----
> Kernel commit 2f18d533757da3899f4bedab0b2c051b080079dc lowered the
> max real address to 53 bits. Max the necessary changes here. Without
> this patch, vmalloc address translation would fail.
> 
> Signed-off-by: Hari Bathini <hbathini at linux.vnet.ibm.com>
> ---
>  defs.h |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/defs.h b/defs.h
> index c779839..fd97ffe 100644
> --- a/defs.h
> +++ b/defs.h
> @@ -3914,8 +3914,9 @@ struct efi_memory_desc_t {
>  #define PMD_MASKED_BITS_64K_4_6  0xc0000000000000ffUL
>  
>  #define PTE_RPN_MASK_DEFAULT  0xffffffffffffffffUL
> -#define PTE_RPN_SIZE_L4_4_6   (PAGESIZE() == PPC64_64K_PAGE_SIZE ? 41 : 45)
> -#define PTE_RPN_MASK_L4_4_6   (((1UL << PTE_RPN_SIZE_L4_4_6) - 1) <<
> PAGESHIFT())
> +#define PAGE_PA_MAX_L4_4_6    (THIS_KERNEL_VERSION >= LINUX(4,11,0) ? 53 :
> 57)
> +#define PTE_RPN_MASK_L4_4_6   \
> +	(((1UL << PAGE_PA_MAX_L4_4_6) - 1) & ~((1UL << PAGESHIFT()) - 1))
>  #define PTE_RPN_SHIFT_L4_4_6  PAGESHIFT()
>  
>  #define PGD_MASKED_BITS_4_7  0xc0000000000000ffUL
> 
>