[PATCH v3 09/11] x86/xen/enlighten: Add init and crash kexec/kdump hooks

[Daniel Kiper]

Add init and crash kexec/kdump hooks.

Signed-off-by: Daniel Kiper <daniel.kiper at oracle.com>
---
 arch/x86/xen/enlighten.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 138e566..5025bba 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -31,6 +31,7 @@
 #include <linux/pci.h>
 #include <linux/gfp.h>
 #include <linux/memblock.h>
+#include <linux/kexec.h>
 
 #include <xen/xen.h>
 #include <xen/events.h>
@@ -1276,6 +1277,12 @@ static void xen_machine_power_off(void)
 
 static void xen_crash_shutdown(struct pt_regs *regs)
 {
+#ifdef CONFIG_KEXEC_FIRMWARE
+	if (kexec_crash_image) {
+		crash_save_cpu(regs, safe_smp_processor_id());
+		return;
+	}
+#endif
 	xen_reboot(SHUTDOWN_crash);
 }
 
@@ -1353,6 +1360,10 @@ asmlinkage void __init xen_start_kernel(void)
 
 	xen_init_mmu_ops();
 
+#ifdef CONFIG_KEXEC_FIRMWARE
+	kexec_use_firmware = true;
+#endif
+
 	/* Prevent unwanted bits from being set in PTEs. */
 	__supported_pte_mask &= ~_PAGE_GLOBAL;
 #if 0
-- 
1.5.6.5