s390/entry: sort out physical vs virtual pointers usage in sie64a

Fix virtual vs physical address confusion (which currently are the
same).

sie_block is accessed in entry.S and passed it to hardware, which is why
both its physical and virtual address are needed. To avoid every caller
having to do the virtual-physical conversion, add a new function sie64a()
which converts the virtual address to physical.

Signed-off-by: Nico Boehr <[email protected]>
Reviewed-by: Alexander Gordeev <[email protected]>
Reviewed-by: Claudio Imbrenda <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Message-Id: <[email protected]>
Signed-off-by: Janosch Frank <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/s390/include/asm/stacktrace.h b/arch/s390/include/asm/stacktrace.h
index b23c658dce77..1802be5abb5d 100644
--- a/arch/s390/include/asm/stacktrace.h
+++ b/arch/s390/include/asm/stacktrace.h
@@ -46,6 +46,7 @@ struct stack_frame {
 			unsigned long sie_savearea;
 			unsigned long sie_reason;
 			unsigned long sie_flags;
+			unsigned long sie_control_block_phys;
 		};
 	};
 	unsigned long gprs[10];