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Message-Id: <20220826173704.1895-3-eric.devolder@oracle.com>
Date: Fri, 26 Aug 2022 13:36:59 -0400
From: Eric DeVolder <eric.devolder@...cle.com>
To: linux-kernel@...r.kernel.org, x86@...nel.org,
kexec@...ts.infradead.org, ebiederm@...ssion.com,
dyoung@...hat.com, bhe@...hat.com, vgoyal@...hat.com
Cc: tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
dave.hansen@...ux.intel.com, hpa@...or.com,
nramas@...ux.microsoft.com, thomas.lendacky@....com,
robh@...nel.org, efault@....de, rppt@...nel.org, david@...hat.com,
sourabhjain@...ux.ibm.com, konrad.wilk@...cle.com,
boris.ostrovsky@...cle.com, eric.devolder@...cle.com
Subject: [PATCH v11 2/7] crash: prototype change for crash_prepare_elf64_headers
>From within crash_prepare_elf64_headers() there is a need to
reference the struct kimage hotplug members. As such, this
change passes the struct kimage as a parameter to the
crash_prepare_elf64_headers(). The hotplug members are added
in "crash: add generic infrastructure for crash hotplug support".
This is preparation for later patch, no functionality change.
Signed-off-by: Eric DeVolder <eric.devolder@...cle.com>
Acked-by: Baoquan He <bhe@...hat.com>
Acked-by: David Hildenbrand <david@...hat.com>
---
arch/arm64/kernel/machine_kexec_file.c | 6 +++---
arch/powerpc/kexec/file_load_64.c | 2 +-
arch/riscv/kernel/elf_kexec.c | 7 ++++---
arch/x86/kernel/crash.c | 2 +-
include/linux/kexec.h | 7 +++++--
kernel/crash_core.c | 4 ++--
6 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index 889951291cc0..7f5f8243928e 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c
@@ -39,7 +39,7 @@ int arch_kimage_file_post_load_cleanup(struct kimage *image)
return kexec_image_post_load_cleanup_default(image);
}
-static int prepare_elf_headers(void **addr, unsigned long *sz)
+static int prepare_elf_headers(struct kimage *image, void **addr, unsigned long *sz)
{
struct crash_mem *cmem;
unsigned int nr_ranges;
@@ -64,7 +64,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz)
}
/* Exclude crashkernel region */
- ret = crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end);
+ ret = crash_exclude_mem_range(image, cmem, crashk_res.start, crashk_res.end);
if (ret)
goto out;
@@ -74,7 +74,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz)
goto out;
}
- ret = crash_prepare_elf64_headers(cmem, true, addr, sz);
+ ret = crash_prepare_elf64_headers(image, cmem, true, addr, sz);
out:
kfree(cmem);
diff --git a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c
index 349a781cea0b..a0af9966a8f0 100644
--- a/arch/powerpc/kexec/file_load_64.c
+++ b/arch/powerpc/kexec/file_load_64.c
@@ -798,7 +798,7 @@ static int load_elfcorehdr_segment(struct kimage *image, struct kexec_buf *kbuf)
goto out;
/* Setup elfcorehdr segment */
- ret = crash_prepare_elf64_headers(cmem, false, &headers, &headers_sz);
+ ret = crash_prepare_elf64_headers(image, cmem, false, &headers, &headers_sz);
if (ret) {
pr_err("Failed to prepare elf headers for the core\n");
goto out;
diff --git a/arch/riscv/kernel/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
index 0cb94992c15b..ffde73228108 100644
--- a/arch/riscv/kernel/elf_kexec.c
+++ b/arch/riscv/kernel/elf_kexec.c
@@ -118,7 +118,8 @@ static int prepare_elf64_ram_headers_callback(struct resource *res, void *arg)
return 0;
}
-static int prepare_elf_headers(void **addr, unsigned long *sz)
+static int prepare_elf_headers(struct kimage *image,
+ void **addr, unsigned long *sz)
{
struct crash_mem *cmem;
unsigned int nr_ranges;
@@ -140,7 +141,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz)
/* Exclude crashkernel region */
ret = crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end);
if (!ret)
- ret = crash_prepare_elf64_headers(cmem, true, addr, sz);
+ ret = crash_prepare_elf64_headers(image, cmem, true, addr, sz);
out:
kfree(cmem);
@@ -212,7 +213,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
/* Add elfcorehdr */
if (image->type == KEXEC_TYPE_CRASH) {
- ret = prepare_elf_headers(&headers, &headers_sz);
+ ret = prepare_elf_headers(image, &headers, &headers_sz);
if (ret) {
pr_err("Preparing elf core header failed\n");
goto out;
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 9730c88530fc..9ceb93c176a6 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -265,7 +265,7 @@ static int prepare_elf_headers(struct kimage *image, void **addr,
goto out;
/* By default prepare 64bit headers */
- ret = crash_prepare_elf64_headers(cmem, IS_ENABLED(CONFIG_X86_64), addr, sz);
+ ret = crash_prepare_elf64_headers(image, cmem, IS_ENABLED(CONFIG_X86_64), addr, sz);
out:
vfree(cmem);
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 13e6c4b58f07..4eefa631e0ae 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -253,8 +253,11 @@ struct crash_mem {
extern int crash_exclude_mem_range(struct crash_mem *mem,
unsigned long long mstart,
unsigned long long mend);
-extern int crash_prepare_elf64_headers(struct crash_mem *mem, int need_kernel_map,
- void **addr, unsigned long *sz);
+extern int crash_prepare_elf64_headers(struct kimage *image,
+ struct crash_mem *mem,
+ int need_kernel_map,
+ void **addr,
+ unsigned long *sz);
#ifndef arch_kexec_apply_relocations_add
/*
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 8c8c82386e8d..0f8aa659cca4 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -315,8 +315,8 @@ static int __init parse_crashkernel_dummy(char *arg)
}
early_param("crashkernel", parse_crashkernel_dummy);
-int crash_prepare_elf64_headers(struct crash_mem *mem, int need_kernel_map,
- void **addr, unsigned long *sz)
+int crash_prepare_elf64_headers(struct kimage *image, struct crash_mem *mem,
+ int need_kernel_map, void **addr, unsigned long *sz)
{
Elf64_Ehdr *ehdr;
Elf64_Phdr *phdr;
--
2.31.1
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