From: Liu Hua <sdu.liu@huawei.com>
Date: Fri, 18 Apr 2014 06:45:36 +0000 (+0100)
Subject: ARM: 8030/1: ARM : kdump : add arch_crash_save_vmcoreinfo
X-Git-Tag: v3.12.20~163
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2e61ebe88c51ebfb8283798218fa62b263abb6af;p=thirdparty%2Fkernel%2Fstable.git

ARM: 8030/1: ARM : kdump : add arch_crash_save_vmcoreinfo

commit 56b700fd6f1e49149880fb1b6ffee0dca5be45fb upstream.

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.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Liu Hua <sdu.liu@huawei.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---

diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 57221e349a7ce..faa3d4c41eced 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -181,3 +181,10 @@ void machine_kexec(struct kimage *image)
 
 	soft_restart(reboot_code_buffer_phys);
 }
+
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_ARM_LPAE
+	VMCOREINFO_CONFIG(ARM_LPAE);
+#endif
+}