[PATCH v2] KVM: s390: pv: ignore ultravisor donated storage for kmemleak

[Christian Borntraeger <borntraeger@linux.ibm.com>]

ignore ultravisor base storage memory that was donated early on for
kmemleak to avoid kernel crashes when accessing such memory.

Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
---
v1->v2: rebase on linux/master
 arch/s390/kernel/uv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index a284f98d9716..7dde37c365a9 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -16,6 +16,7 @@
 #include <linux/swap.h>
 #include <linux/pagewalk.h>
 #include <linux/backing-dev.h>
+#include <linux/kmemleak.h>
 #include <asm/facility.h>
 #include <asm/sections.h>
 #include <asm/uv.h>
@@ -70,6 +71,7 @@ void __init setup_uv(void)
 			uv_info.uv_base_stor_len);
 		goto fail;
 	}
+	kmemleak_ignore_phys(__pa(uv_stor_base));
 
 	if (uv_init(__pa(uv_stor_base), uv_info.uv_base_stor_len)) {
 		memblock_free(uv_stor_base, uv_info.uv_base_stor_len);
-- 
2.53.0