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-rw-r--r--arch/s390/boot/uv.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/s390/boot/uv.c b/arch/s390/boot/uv.c
index 3156f78b136a..5aea68d6d75d 100644
--- a/arch/s390/boot/uv.c
+++ b/arch/s390/boot/uv.c
@@ -1,8 +1,10 @@
// SPDX-License-Identifier: GPL-2.0
#include <asm/uv.h>
+#include <asm/boot_data.h>
#include <asm/facility.h>
#include <asm/sections.h>
+#include "boot.h"
#include "uv.h"
/* will be used in arch/s390/kernel/uv.c */
@@ -71,4 +73,10 @@ void adjust_to_uv_max(unsigned long *vmax)
if (has_uv_sec_stor_limit())
*vmax = min_t(unsigned long, *vmax, uv_info.max_sec_stor_addr);
}
+
+void sanitize_prot_virt_host(void)
+{
+ if (OLDMEM_BASE || (ipl_block_valid && is_ipl_block_dump()))
+ prot_virt_host = 0;
+}
#endif