linux-kernel - [PATCH] LoongArch: kexec_file: print out debugging message if required

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20251021091114.982820-1-maqianga@uniontech.com>
Date: Tue, 21 Oct 2025 17:11:14 +0800
From: Qiang Ma <maqianga@...ontech.com>
To: chenhuacai@...nel.org,
	kernel@...0n.name
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Qiang Ma <maqianga@...ontech.com>
Subject: [PATCH] LoongArch: kexec_file: print out debugging message if required

When specifying '-d' for kexec_file_load interface, loaded locations
of kernel/initrd/cmdline etc can be printed out to help debug.

Commit eb7622d908a0 ("kexec_file, riscv: print out debugging message
if required") fixes the same issue on RISC-V.

So, remove kexec_image_info() because the content has been printed
out in generic code.

And on Loongson-3A5000, the printed messages look like below:

[  288.667939] kexec_file: kernel: 00000000d9aad283 kernel_size: 0x2e77f30
[  288.668414] kexec_file(EFI): No LoongArch PE image header.
[  288.703104] kexec_file: Loaded initrd at 0x80000000 bufsz=0x1637cd0 memsz=0x1638000
[  288.703674] kexec_file(ELF): Loaded kernel at 0x9c20000 bufsz=0x27f1800 memsz=0x2950000
[  288.704092] kexec_file: nr_segments = 2
[  288.704277] kexec_file: segment[0]: buf=0x00000000cc3e6c33 bufsz=0x27f1800 mem=0x9c20000 memsz=0x2950000
[  288.741213] kexec_file: segment[1]: buf=0x00000000bb75a541 bufsz=0x1637cd0 mem=0x80000000 memsz=0x1638000
[  288.757182] kexec_file: kexec_file_load: type:0, start:0xb15d000 head:0x18db60002 flags:0x8

Signed-off-by: Qiang Ma <maqianga@...ontech.com>
---
 arch/loongarch/kernel/machine_kexec.c | 22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/arch/loongarch/kernel/machine_kexec.c b/arch/loongarch/kernel/machine_kexec.c
index e4b2bbc47e62..2d64b7c81e5e 100644
--- a/arch/loongarch/kernel/machine_kexec.c
+++ b/arch/loongarch/kernel/machine_kexec.c
@@ -39,34 +39,12 @@ static unsigned long systable_ptr;
 static unsigned long start_addr;
 static unsigned long first_ind_entry;
 
-static void kexec_image_info(const struct kimage *kimage)
-{
-	unsigned long i;
-
-	pr_debug("kexec kimage info:\n");
-	pr_debug("\ttype:        %d\n", kimage->type);
-	pr_debug("\tstart:       %lx\n", kimage->start);
-	pr_debug("\thead:        %lx\n", kimage->head);
-	pr_debug("\tnr_segments: %lu\n", kimage->nr_segments);
-
-	for (i = 0; i < kimage->nr_segments; i++) {
-		pr_debug("\t    segment[%lu]: %016lx - %016lx", i,
-			kimage->segment[i].mem,
-			kimage->segment[i].mem + kimage->segment[i].memsz);
-		pr_debug("\t\t0x%lx bytes, %lu pages\n",
-			(unsigned long)kimage->segment[i].memsz,
-			(unsigned long)kimage->segment[i].memsz /  PAGE_SIZE);
-	}
-}
-
 int machine_kexec_prepare(struct kimage *kimage)
 {
 	int i;
 	char *bootloader = "kexec";
 	void *cmdline_ptr = (void *)KEXEC_CMDLINE_ADDR;
 
-	kexec_image_info(kimage);
-
 	kimage->arch.efi_boot = fw_arg0;
 	kimage->arch.systable_ptr = fw_arg2;
 
-- 
2.20.1