kpatch/0028-create-diff-object-ignore-changed-of-section-__patch.patch

From 66681deab6874218eedc244138dbc464daf13011 Mon Sep 17 00:00:00 2001
From: hubin <hubin73@huawei.com>
Date: Tue, 10 May 2022 15:28:26 +0800
Subject: [PATCH 28/37] create-diff-object: ignore changed of section
 __patchable_function_entries

Linux 5.10 aarch64 uses -fpatchable-function-entry=N to generate N NOPs at the
beginning of each function, Section __patchable_function_entries is generated
to record the starting address of these NOPs.

Section __patchable_function_entries will change if the number of functions
changed during making hotpatch, here we just ignore the change of this section.

Signed-off-by: hubin <hubin73@huawei.com>
---
 kpatch-build/create-diff-object.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kpatch-build/create-diff-object.c b/kpatch-build/create-diff-object.c
index b27edd8..666e44c 100644
--- a/kpatch-build/create-diff-object.c
+++ b/kpatch-build/create-diff-object.c
@@ -3103,7 +3103,8 @@ static void kpatch_process_special_sections(struct kpatch_elf *kelf,
 		list_for_each_entry(sec, &kelf->sections, list) {
 			if (strcmp(sec->name, "__tracepoints") &&
 			    strcmp(sec->name, "__tracepoints_ptrs") &&
-			    strcmp(sec->name, "__tracepoints_strings"))
+			    strcmp(sec->name, "__tracepoints_strings") &&
+			    strcmp(sec->name, "__patchable_function_entries"))
 				continue;
 
 			sec->status = SAME;
-- 
2.33.0