[S390] kdump backend code

This patch provides the architecture specific part of the s390 kdump
support.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 781ff5169560..4799383e2df9 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -335,6 +335,9 @@ void __init vmem_map_init(void)
         ro_start = ((unsigned long)&_stext) & PAGE_MASK;
         ro_end = PFN_ALIGN((unsigned long)&_eshared);
         for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
+                if (memory_chunk[i].type == CHUNK_CRASHK ||
+                    memory_chunk[i].type == CHUNK_OLDMEM)
+                        continue;
                 start = memory_chunk[i].addr;
                 end = memory_chunk[i].addr + memory_chunk[i].size;
                 if (start >= ro_end || end <= ro_start)
@@ -368,6 +371,9 @@ static int __init vmem_convert_memory_chunk(void)
         for (i = 0; i < MEMORY_CHUNKS; i++) {
                 if (!memory_chunk[i].size)
                         continue;
+                if (memory_chunk[i].type == CHUNK_CRASHK ||
+                    memory_chunk[i].type == CHUNK_OLDMEM)
+                        continue;
                 seg = kzalloc(sizeof(*seg), GFP_KERNEL);
                 if (!seg)
                         panic("Out of memory...\n");