linux-kernel - [PATCH 13/26] mm/init-mm: Annotate static information into meminspect

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Message-ID: <20251119154427.1033475-14-eugen.hristev@linaro.org>
Date: Wed, 19 Nov 2025 17:44:14 +0200
From: Eugen Hristev <eugen.hristev@...aro.org>
To: linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	tglx@...utronix.de,
	andersson@...nel.org,
	pmladek@...e.com,
	rdunlap@...radead.org,
	corbet@....net,
	david@...hat.com,
	mhocko@...e.com
Cc: tudor.ambarus@...aro.org,
	mukesh.ojha@....qualcomm.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-hardening@...r.kernel.org,
	jonechou@...gle.com,
	rostedt@...dmis.org,
	linux-doc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-remoteproc@...r.kernel.org,
	linux-arch@...r.kernel.org,
	tony.luck@...el.com,
	kees@...nel.org,
	Eugen Hristev <eugen.hristev@...aro.org>
Subject: [PATCH 13/26] mm/init-mm: Annotate static information into meminspect

Annotate vital static information into inspection table:
 - init_mm
 - swapper_pg_dir
 - _sinittext
 - _einittext
 - _end
 - _text
 - _stext
 - _etext

Information on these variables is stored into dedicated inspection section.

Signed-off-by: Eugen Hristev <eugen.hristev@...aro.org>
---
 mm/init-mm.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/mm/init-mm.c b/mm/init-mm.c
index 4600e7605cab..6931549bb7a2 100644
--- a/mm/init-mm.c
+++ b/mm/init-mm.c
@@ -7,6 +7,7 @@
 #include <linux/cpumask.h>
 #include <linux/mman.h>
 #include <linux/pgtable.h>
+#include <linux/meminspect.h>
 
 #include <linux/atomic.h>
 #include <linux/user_namespace.h>
@@ -19,6 +20,13 @@
 
 const struct vm_operations_struct vma_dummy_vm_ops;
 
+MEMINSPECT_AREA_ENTRY(_sinittext, sizeof(void *));
+MEMINSPECT_AREA_ENTRY(_einittext, sizeof(void *));
+MEMINSPECT_AREA_ENTRY(_end, sizeof(void *));
+MEMINSPECT_AREA_ENTRY(_text, sizeof(void *));
+MEMINSPECT_AREA_ENTRY(_stext, sizeof(void *));
+MEMINSPECT_AREA_ENTRY(_etext, sizeof(void *));
+
 /*
  * For dynamically allocated mm_structs, there is a dynamically sized cpumask
  * at the end of the structure, the size of which depends on the maximum CPU
@@ -48,6 +56,9 @@ struct mm_struct init_mm = {
 	INIT_MM_CONTEXT(init_mm)
 };
 
+MEMINSPECT_SIMPLE_ENTRY(init_mm);
+MEMINSPECT_AREA_ENTRY(swapper_pg_dir, sizeof(void *));
+
 void setup_initial_init_mm(void *start_code, void *end_code,
 			   void *end_data, void *brk)
 {
-- 
2.43.0