linux-kernel - [PATCH v2 4/7] kexec_file, arm64: 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>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231124033642.520686-5-bhe@redhat.com>
Date:   Fri, 24 Nov 2023 11:36:39 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     kexec@...ts.infradead.org, x86@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
        linux-parisc@...r.kernel.org, akpm@...ux-foundation.org,
        joe@...ches.com, nathan@...nel.org, yujie.liu@...el.com,
        Baoquan He <bhe@...hat.com>
Subject: [PATCH v2 4/7] kexec_file, arm64: print out debugging message if required

Replace pr_debug() with the newly added kexec_dprintk() in kexec_file
loading related codes.

And also remove the kimage->segment[] printing because the generic code
has done the printing.

Signed-off-by: Baoquan He <bhe@...hat.com>
---
 arch/arm64/kernel/kexec_image.c        |  2 +-
 arch/arm64/kernel/machine_kexec.c      | 26 ++++++--------------------
 arch/arm64/kernel/machine_kexec_file.c |  6 +++---
 3 files changed, 10 insertions(+), 24 deletions(-)

diff --git a/arch/arm64/kernel/kexec_image.c b/arch/arm64/kernel/kexec_image.c
index 636be6715155..df71965178f5 100644
--- a/arch/arm64/kernel/kexec_image.c
+++ b/arch/arm64/kernel/kexec_image.c
@@ -122,7 +122,7 @@ static void *image_load(struct kimage *image,
 	kernel_segment->memsz -= text_offset;
 	image->start = kernel_segment->mem;
 
-	pr_debug("Loaded kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
+	kexec_dprintk("Loaded kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
 				kernel_segment->mem, kbuf.bufsz,
 				kernel_segment->memsz);
 
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index 078910db77a4..b38aae5b488d 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -32,26 +32,12 @@
 static void _kexec_image_info(const char *func, int line,
 	const struct kimage *kimage)
 {
-	unsigned long i;
-
-	pr_debug("%s:%d:\n", func, line);
-	pr_debug("  kexec kimage info:\n");
-	pr_debug("    type:        %d\n", kimage->type);
-	pr_debug("    start:       %lx\n", kimage->start);
-	pr_debug("    head:        %lx\n", kimage->head);
-	pr_debug("    nr_segments: %lu\n", kimage->nr_segments);
-	pr_debug("    dtb_mem: %pa\n", &kimage->arch.dtb_mem);
-	pr_debug("    kern_reloc: %pa\n", &kimage->arch.kern_reloc);
-	pr_debug("    el2_vectors: %pa\n", &kimage->arch.el2_vectors);
-
-	for (i = 0; i < kimage->nr_segments; i++) {
-		pr_debug("      segment[%lu]: %016lx - %016lx, 0x%lx bytes, %lu pages\n",
-			i,
-			kimage->segment[i].mem,
-			kimage->segment[i].mem + kimage->segment[i].memsz,
-			kimage->segment[i].memsz,
-			kimage->segment[i].memsz /  PAGE_SIZE);
-	}
+	kexec_dprintk("%s:%d:\n", func, line);
+	kexec_dprintk("  kexec kimage info:\n");
+	kexec_dprintk("    type:        %d\n", kimage->type);
+	kexec_dprintk("    head:        %lx\n", kimage->head);
+	kexec_dprintk("    kern_reloc: %pa\n", &kimage->arch.kern_reloc);
+	kexec_dprintk("    el2_vectors: %pa\n", &kimage->arch.el2_vectors);
 }
 
 void machine_kexec_cleanup(struct kimage *kimage)
diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index a11a6e14ba89..9f82401d99f4 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c
@@ -127,7 +127,7 @@ int load_other_segments(struct kimage *image,
 		image->elf_load_addr = kbuf.mem;
 		image->elf_headers_sz = headers_sz;
 
-		pr_debug("Loaded elf core header at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
+		kexec_dprintk("Loaded elf core header at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
 			 image->elf_load_addr, kbuf.bufsz, kbuf.memsz);
 	}
 
@@ -148,7 +148,7 @@ int load_other_segments(struct kimage *image,
 			goto out_err;
 		initrd_load_addr = kbuf.mem;
 
-		pr_debug("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
+		kexec_dprintk("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
 				initrd_load_addr, kbuf.bufsz, kbuf.memsz);
 	}
 
@@ -179,7 +179,7 @@ int load_other_segments(struct kimage *image,
 	image->arch.dtb = dtb;
 	image->arch.dtb_mem = kbuf.mem;
 
-	pr_debug("Loaded dtb at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
+	kexec_dprintk("Loaded dtb at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
 			kbuf.mem, kbuf.bufsz, kbuf.memsz);
 
 	return 0;
-- 
2.41.0