[PATCH 2/3] ARM : kdump : add arch_crash_save_vmcoreinfo

[Liu Hua]

For vmcore generated by LPAE enabled kernel, user space
utility such as crash needs additional infomation to
parse.

So this patch add arch_crash_save_vmcoreinfo as what PAE enabled
i386 linux does.

Signed-off-by: Liu Hua <sdu.liu at huawei.com>
To: Russell King <linux at arm.linux.org.uk>
Cc: Stephen Warren <swarren at nvidia.com> 
Cc: Will Deacon <will.deacon at arm.com>
Cc: Vijaya Kumar K <vijay.kilari at gmail.com>
Cc: <linux-arm-kernel at lists.infradead.org>
Cc: <linux-kernel at vger.kernel.org>
Cc: <kexec at lists.infradead.org>
---
 arch/arm/kernel/machine_kexec.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index f0d180d..8cf0996 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -184,3 +184,10 @@ void machine_kexec(struct kimage *image)
 
 	soft_restart(reboot_entry_phys);
 }
+
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_ARM_LPAE
+	VMCOREINFO_CONFIG(ARM_LPAE);
+#endif
+}
-- 
1.9.0