[Crash-utility] Re: [PATCH] fix for ppc64 virtual-to-physical translation w/64K pages

[Sachin P. Sant]

Dave Anderson wrote:
> The patch tests OK, and I don't believe any other vtop-related
> changes are required, but given that the ppc64.c was contributed
> by IBM, can I get an ACK from the IBM brain-trust out there?
>
Heh, Dave you beat me by few mins. I drafted a mail with a
patch to fix this issue and was about to post it.

I ack that the patch works well. Infact this patch is also
required as it fixes a problem with kmem -s command.

Without this patch the o/p looks like:

crash> kmem -s
CACHE            NAME    OBJSIZE  ALLOCATED     TOTAL  SLABS  SSIZE
c000000001542900 jbd_1k   1024          0         0      0    64k
c000000001542e00 jbd_4k   4096          9        15      1    64k
c000000001549200 <C0>      112        128       564      1
64k
kmem: cannot read kmem_cache_s.name string at d000000000123a18
crash>           

With the shift value changed to 30 the above command works fine.

crash> kmem -s
CACHE            NAME                 OBJSIZE  ALLOCATED     TOTAL  SLABS  SSIZE
c000000001542900 jbd_1k                  1024          0         0      0    64k
c000000001542e00 jbd_4k                  4096          0        15      1    64k
c000000001549200 dm_snap_pending_exception 112       128       564      1    64k
c000000001549700 dm_snap_exception         32          0         0      0    64k
c000000001545b00 rpc_buffers             2048          8        31      1    64k
c000000273dd5600 rpc_tasks                384          8       168      1    64k
................
...............

Thanks
-Sachin