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From: Qiang Ma <maqianga@uniontech.com>
To: akpm@linux-foundation.org, bhe@redhat.com,
	catalin.marinas@arm.com, will@kernel.org
Cc: kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Qiang Ma <maqianga@uniontech.com>,
	kernel test robot <lkp@intel.com>
Subject: [PATCH v1 2/3] kexec: print out debugging message if required for kexec_load
Date: Fri, 12 Dec 2025 17:56:48 +0800	[thread overview]
Message-ID: <20251212095649.857796-3-maqianga@uniontech.com> (raw)
In-Reply-To: <20251212095649.857796-1-maqianga@uniontech.com>

The commit a85ee18c7900 ("kexec_file: print out debugging message
if required") has added general code printing in kexec_file_load(),
but not in kexec_load().

As a result, when using '-d' for the kexec_load interface,
print nothing in the kernel space.

Since the segments debugging message has already been printed by the
user-space tool kexec-tools, it will not be printed here in the
kernel space.

And print out type/start/head of kimage and flags to help debug.

Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202510310332.6XrLe70K-lkp@intel.com/
---
 kernel/kexec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/kexec.c b/kernel/kexec.c
index f6c58c767eb0..37e4ac8af9f3 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -166,6 +166,9 @@ static int do_kexec_load(unsigned long entry, unsigned long nr_segments,
 	if (ret)
 		goto out;
 
+	kexec_dprintk("kexec_load: type:%u, start:0x%lx head:0x%lx flags:0x%lx\n",
+		      image->type, image->start, image->head, flags);
+
 	/* Install the new kernel and uninstall the old */
 	image = xchg(dest_image, image);
 
-- 
2.20.1


  parent reply	other threads:[~2025-12-12  9:59 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-12  9:56 [PATCH v1 0/3] kexec: add kexec flag to control debug printing Qiang Ma
2025-12-12  9:56 ` [PATCH v1 1/3] " Qiang Ma
2025-12-12  9:56 ` Qiang Ma [this message]
2025-12-15  0:32   ` [PATCH v1 2/3] kexec: print out debugging message if required for kexec_load Andrew Morton
2025-12-15  4:41     ` Qiang Ma
2025-12-12  9:56 ` [PATCH v1 3/3] arm64: kexec: Adjust the debug print of kexec_image_info Qiang Ma

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