linux-kernel - [RFC][PATCH 05/14] Documentation: kmemdump: add section for coreimage ELF

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Message-ID: <20250422113156.575971-6-eugen.hristev@linaro.org>
Date: Tue, 22 Apr 2025 14:31:47 +0300
From: Eugen Hristev <eugen.hristev@...aro.org>
To: linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	andersson@...nel.org
Cc: linux-doc@...r.kernel.org,
	corbet@....net,
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	konradybcio@...nel.org,
	dietmar.eggemann@....com,
	juri.lelli@...hat.com,
	eugen.hristev@...aro.org
Subject: [RFC][PATCH 05/14] Documentation: kmemdump: add section for coreimage ELF

Add section describing the utility of coreimage ELF generation for kmemdump.

Signed-off-by: Eugen Hristev <eugen.hristev@...aro.org>
---
 Documentation/debug/kmemdump.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/debug/kmemdump.rst b/Documentation/debug/kmemdump.rst
index dfee755a1be1..b67dc166905a 100644
--- a/Documentation/debug/kmemdump.rst
+++ b/Documentation/debug/kmemdump.rst
@@ -17,6 +17,12 @@ kmemdump allows a backend to be connected, this backend interfaces a
 specific hardware that can debug or dump the memory registered into
 kmemdump.
 
+kmemdump can also prepare specific regions of the kernel that can be
+put together to form a minimal core image file. To achieve this, the first
+region is an ELF header with program headers for each region, and specific
+ELF NOTE section with vmcoreinfo. To enable this feature, use
+`CONFIG_DRIVER_KMEMDUMP_COREIMAGE`.
+
 kmemdump Internals
 =============
 
-- 
2.43.0