[PATCH v5 2/5] powerpc/crash hp: update kimage_arch struct

[Sourabh Jain <sourabhjain@linux.ibm.com>]

Once the kimage is prepared the only way to identify which kexec segment
holds FDT is by looping through all kexec segments. To avoid this a new
member "fdt_index" is added to kimage_arch struct. The new member holds
the index of FDT segment in the kexec segment array which gives direct
access to FDT segment.

The fdt_index will be populated during kexec load for both kexec_load
and kexec_file_load case.

Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
---
 arch/powerpc/include/asm/kexec.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h
index c8040c93b15a..9489e5ca93fb 100644
--- a/arch/powerpc/include/asm/kexec.h
+++ b/arch/powerpc/include/asm/kexec.h
@@ -106,6 +106,9 @@ extern const struct kexec_file_ops kexec_elf64_ops;
 struct kimage_arch {
 	struct crash_mem *exclude_ranges;
 
+#if defined(CONFIG_HOTPLUG_CPU)
+	int fdt_index;
+#endif
 	unsigned long backup_start;
 	void *backup_buf;
 	void *fdt;
-- 
2.36.1