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kernel/kexec: change the prototype of kimage_map_segment()

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The kexec segment index will be required to extract the corresponding
information for that segment in kimage_map_segment().  Additionally,
kexec_segment already holds the kexec relocation destination address and
size.  Therefore, the prototype of kimage_map_segment() can be changed.

Link: https://lkml.kernel.org/r/20251216014852.8737-1-piliu@redhat.com
Fixes: 07d2490297 ("kexec: enable CMA based contiguous allocation")
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Mimi Zohar <zohar@linux.ibm.com>
Cc: Roberto Sassu <roberto.sassu@huawei.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Steven Chen <chenste@linux.microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Pingfan Liu
2025-12-16 09:48:51 +08:00
committed by Andrew Morton
parent 8de524774b
commit fe55ea8593
3 changed files with 9 additions and 8 deletions
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9
kernel/kexec_core.c
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@@ -953,17 +953,20 @@ int kimage_load_segment(struct kimage *image, int idx)
return result;
}
void *kimage_map_segment(struct kimage *image,
unsigned long addr, unsigned long size)
void *kimage_map_segment(struct kimage *image, int idx)
{
unsigned long addr, size, eaddr;
unsigned long src_page_addr, dest_page_addr = 0;
unsigned long eaddr = addr + size;
kimage_entry_t *ptr, entry;
struct page **src_pages;
unsigned int npages;
void *vaddr = NULL;
int i;
addr = image->segment[idx].mem;
size = image->segment[idx].memsz;
eaddr = addr + size;
/*
* Collect the source pages and map them in a contiguous VA range.
*/