[PATCH] powerpc/ptdump: Fix generic ptdump for 64-bit

[Michael Ellerman]

On Tue, 31 Aug 2021 23:51:51 +1000, Michael Ellerman wrote:
> Since the conversion to generic ptdump we see crashes on 64-bit:
> 
>   BUG: Unable to handle kernel data access on read at 0xc0eeff7f00000000
>   Faulting instruction address: 0xc00000000045e5fc
>   Oops: Kernel access of bad area, sig: 11 [#1]
>   ...
>   NIP __walk_page_range+0x2bc/0xce0
>   LR  __walk_page_range+0x240/0xce0
>   Call Trace:
>     __walk_page_range+0x240/0xce0 (unreliable)
>     walk_page_range_novma+0x74/0xb0
>     ptdump_walk_pgd+0x98/0x170
>     ptdump_check_wx+0x88/0xd0
>     mark_rodata_ro+0x48/0x80
>     kernel_init+0x74/0x1a0
>     ret_from_kernel_thread+0x5c/0x64
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/ptdump: Fix generic ptdump for 64-bit
      https://git.kernel.org/powerpc/c/b14b8b1ed0e15b8f43fba9c25654278a31ee3c2f

cheers