In locate_mem_hole functions, a memory hole is located and added as
kexec_segment. But from the name of locate_mem_hole, it should only
take responsibility of searching a available memory hole to contain
data of a specified size.
So in this patch add a new field 'mem' into kexec_buf, then take that
kexec segment adding code out of locate_mem_hole_top_down and
locate_mem_hole_bottom_up. This make clear of the functionality of
locate_mem_hole just like it declars to do. And by this
locate_mem_hole_callback chould be used later if anyone want to locate
a memory hole for other use.
Signed-off-by: Baoquan He <b...@redhat.com>
---
include/linux/kexec.h | 1 +
kernel/kexec.c | 9 +++++----
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 4b2a0e1..9d957b7 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -178,6 +178,7 @@ struct kexec_buf {
struct kimage *image;
char *buffer;
unsigned long bufsz;
+ unsigned long mem;
unsigned long memsz;
unsigned long buf_align;
unsigned long buf_min;
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 0b49a0a..586444e 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -2054,8 +2054,7 @@ static int locate_mem_hole_top_down(unsigned long start,
unsigned long end,
} while (1);
/* If we are here, we found a suitable memory range */
- __kexec_add_segment(image, kbuf->buffer, kbuf->bufsz, temp_start,
- kbuf->memsz);
+ kbuf->mem = temp_start;
/* Success, stop navigating through remaining System RAM ranges */
return 1;
@@ -2089,8 +2088,7 @@ static int locate_mem_hole_bottom_up(unsigned long start,
unsigned long end,
} while (1);
/* If we are here, we found a suitable memory range */
- __kexec_add_segment(image, kbuf->buffer, kbuf->bufsz, temp_start,
- kbuf->memsz);
+ kbuf->mem = temp_start;
/* Success, stop navigating through remaining System RAM ranges */
return 1;
@@ -2176,6 +2174,9 @@ int kexec_add_buffer(struct kimage *image, char *buffer,
unsigned long bufsz,
return -EADDRNOTAVAIL;
}
+ __kexec_add_segment(image, kbuf->buffer, kbuf->bufsz, kbuf->mem,
+ kbuf->memsz);
+
/* Found a suitable memory range */
ksegment = &image->segment[image->nr_segments - 1];
*load_addr = ksegment->mem;
--
1.8.5.3
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