Commit c2314cb2 authored by Vasily Gorbik's avatar Vasily Gorbik
Browse files

s390/protvirt: support ultravisor without secure storage limit 



Avoid potential crash due to lack of secure storage limit. Check that
max_sec_stor_addr is not 0 before adjusting vmalloc position.

Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 1d6671ae

arch/s390/kernel/uv.c

+2 −1
Original line number Diff line number Diff line
@@ -90,6 +90,7 @@ void __init setup_uv(void) 


void adjust_to_uv_max(unsigned long *vmax)

{

	if (uv_info.max_sec_stor_addr)

		*vmax = min_t(unsigned long, *vmax, uv_info.max_sec_stor_addr);

}