[POWERPC] pseries: phyp dump: Disable phyp-dump through boot-var

This adds a kernel command line option "phyp_dump", which takes a 0/1
value for disabling/ enabling phyp_dump at boot time.  Kdump can use
this on cmdline (phyp_dump=0) to disable phyp-dump during boot when
enabling itself.  This will ensure only one dumping mechanism is active
at any given time.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-powerpc/phyp_dump.h b/include/asm-powerpc/phyp_dump.h
index b454de45b2ca..209a98913d9d 100644
--- a/include/asm-powerpc/phyp_dump.h
+++ b/include/asm-powerpc/phyp_dump.h
@@ -25,6 +25,7 @@ struct phyp_dump {
         unsigned long init_reserve_start;
         unsigned long init_reserve_size;
         /* Check status during boot if dump supported, active & present*/
+        unsigned long phyp_dump_at_boot;
         unsigned long phyp_dump_configured;
         unsigned long phyp_dump_is_active;
         /* store cpu & hpte size */