s390, kexec_file: drop arch_kexec_mem_walk()
Since s390 already knows where to locate buffers, calling
arch_kexec_mem_walk() has no sense. So we can just drop it as kbuf->mem
indicates this while all other architectures sets it to 0 initially.
This change is a preparatory work for the next patch, where all the
variant memory walks, either on system resource or memblock, will be
put in one common place so that it will satisfy all the architectures'
need.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 49ab758..f378cb7 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -145,6 +145,14 @@
unsigned long buf_len);
int kexec_image_post_load_cleanup_default(struct kimage *image);
+/*
+ * If kexec_buf.mem is set to this value, kexec_locate_mem_hole()
+ * will try to allocate free memory. Arch may overwrite it.
+ */
+#ifndef KEXEC_BUF_MEM_UNKNOWN
+#define KEXEC_BUF_MEM_UNKNOWN 0
+#endif
+
/**
* struct kexec_buf - parameters for finding a place for a buffer in memory
* @image: kexec image in which memory to search.