linux-kernel - [PATCH v15 01/10] powerpc: Rename kexec elfcorehdr_addr to elf_headers

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Date:   Fri, 15 Jan 2021 09:30:08 -0800
From:   Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
To:     zohar@...ux.ibm.com, bauerman@...ux.ibm.com, robh@...nel.org,
        takahiro.akashi@...aro.org, gregkh@...uxfoundation.org,
        will@...nel.org, catalin.marinas@....com, mpe@...erman.id.au
Cc:     james.morse@....com, sashal@...nel.org, benh@...nel.crashing.org,
        paulus@...ba.org, frowand.list@...il.com,
        vincenzo.frascino@....com, mark.rutland@....com,
        dmitry.kasatkin@...il.com, jmorris@...ei.org, serge@...lyn.com,
        pasha.tatashin@...een.com, allison@...utok.net,
        masahiroy@...nel.org, bhsharma@...hat.com, mbrugger@...e.com,
        hsinyi@...omium.org, tao.li@...o.com, christophe.leroy@....fr,
        prsriva@...ux.microsoft.com, balajib@...ux.microsoft.com,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v15 01/10] powerpc: Rename kexec elfcorehdr_addr to elf_headers_mem

From: Rob Herring <robh@...nel.org>

The architecture specific field, elfcorehdr_addr in struct kimage_arch,
that holds the address of the buffer in memory for ELF core header for
powerpc has a different name than the one used for arm64.  This makes
it hard to have a common code for setting up the device tree for
kexec system call.

Rename elfcorehdr_addr to elf_headers_mem to align with arm64 name so
common code can use it.

Signed-off-by: Rob Herring <robh@...nel.org>
Reviewed-by: Thiago Jung Bauermann <bauerman@...ux.ibm.com>
Reviewed-by: Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
---
 arch/powerpc/include/asm/kexec.h  | 2 +-
 arch/powerpc/kexec/file_load.c    | 4 ++--
 arch/powerpc/kexec/file_load_64.c | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h
index 55d6ede30c19..dbf09d2f36d0 100644
--- a/arch/powerpc/include/asm/kexec.h
+++ b/arch/powerpc/include/asm/kexec.h
@@ -108,7 +108,7 @@ struct kimage_arch {
 	unsigned long backup_start;
 	void *backup_buf;
 
-	unsigned long elfcorehdr_addr;
+	unsigned long elf_headers_mem;
 	unsigned long elf_headers_sz;
 	void *elf_headers;
 
diff --git a/arch/powerpc/kexec/file_load.c b/arch/powerpc/kexec/file_load.c
index 9a232bc36c8f..e452b11df631 100644
--- a/arch/powerpc/kexec/file_load.c
+++ b/arch/powerpc/kexec/file_load.c
@@ -45,7 +45,7 @@ char *setup_kdump_cmdline(struct kimage *image, char *cmdline,
 		return NULL;
 
 	elfcorehdr_strlen = sprintf(cmdline_ptr, "elfcorehdr=0x%lx ",
-				    image->arch.elfcorehdr_addr);
+				    image->arch.elf_headers_mem);
 
 	if (elfcorehdr_strlen + cmdline_len > COMMAND_LINE_SIZE) {
 		pr_err("Appending elfcorehdr=<addr> exceeds cmdline size\n");
@@ -263,7 +263,7 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
 		 * Avoid elfcorehdr from being stomped on in kdump kernel by
 		 * setting up memory reserve map.
 		 */
-		ret = fdt_add_mem_rsv(fdt, image->arch.elfcorehdr_addr,
+		ret = fdt_add_mem_rsv(fdt, image->arch.elf_headers_mem,
 				      image->arch.elf_headers_sz);
 		if (ret) {
 			pr_err("Error reserving elfcorehdr memory: %s\n",
diff --git a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c
index c69bcf9b547a..a05c19b3cc60 100644
--- a/arch/powerpc/kexec/file_load_64.c
+++ b/arch/powerpc/kexec/file_load_64.c
@@ -815,7 +815,7 @@ static int load_elfcorehdr_segment(struct kimage *image, struct kexec_buf *kbuf)
 		goto out;
 	}
 
-	image->arch.elfcorehdr_addr = kbuf->mem;
+	image->arch.elf_headers_mem = kbuf->mem;
 	image->arch.elf_headers_sz = headers_sz;
 	image->arch.elf_headers = headers;
 out:
@@ -851,7 +851,7 @@ int load_crashdump_segments_ppc64(struct kimage *image,
 		return ret;
 	}
 	pr_debug("Loaded elf core header at 0x%lx, bufsz=0x%lx memsz=0x%lx\n",
-		 image->arch.elfcorehdr_addr, kbuf->bufsz, kbuf->memsz);
+		 image->arch.elf_headers_mem, kbuf->bufsz, kbuf->memsz);
 
 	return 0;
 }
-- 
2.30.0