This reverts commit 49fd897573c97b0eaf10f47d850027d78c456cd7.
Reverting back to commit 0549a3c because the values are used by crash
and other tools already. I expected this commit would not go through given
the unresolved comments. I want it to be easy to resolve major memory
section positions when KASLR memory randomization is enabled.
Signed-off-by: Thomas Garnier <thgarnie at google.com>
---
arch/x86/kernel/machine_kexec_64.c | 3 +++
include/linux/kexec.h | 6 ++++++
2 files changed, 9 insertions(+)
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 2e3c34b..05f3367 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -339,6 +339,9 @@ void arch_crash_save_vmcoreinfo(void)
kaslr_offset());
VMCOREINFO_NUMBER(KERNEL_IMAGE_SIZE);
VMCOREINFO_PHYS_BASE(phys_base);
+ VMCOREINFO_PAGE_OFFSET(PAGE_OFFSET);
+ VMCOREINFO_VMALLOC_START(VMALLOC_START);
+ VMCOREINFO_VMEMMAP_START(VMEMMAP_START);
}
/* arch-dependent functionality related to kexec file-based syscall */
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index e98e546..ff9c876 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -285,6 +285,12 @@ phys_addr_t paddr_vmcoreinfo_note(void);
vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
#define VMCOREINFO_PHYS_BASE(value) \
vmcoreinfo_append_str("PHYS_BASE=%lx\n", (unsigned long)value)
+#define VMCOREINFO_PAGE_OFFSET(value) \
+ vmcoreinfo_append_str("PAGE_OFFSET=%lx\n", (unsigned long)value)
+#define VMCOREINFO_VMALLOC_START(value) \
+ vmcoreinfo_append_str("VMALLOC_START=%lx\n", (unsigned long)value)
+#define VMCOREINFO_VMEMMAP_START(value) \
+ vmcoreinfo_append_str("VMEMMAP_START=%lx\n", (unsigned long)value)
extern struct kimage *kexec_image;
extern struct kimage *kexec_crash_image;
--
2.8.0.rc3.226.g39d4020
