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

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Message-Id: <1356574740-6806-10-git-send-email-daniel.kiper@oracle.com>
Date:	Thu, 27 Dec 2012 03:18:58 +0100
From:	Daniel Kiper <daniel.kiper@...cle.com>
To:	andrew.cooper3@...rix.com, ebiederm@...ssion.com, hpa@...or.com,
	jbeulich@...e.com, konrad.wilk@...cle.com, maxim.uvarov@...cle.com,
	mingo@...hat.com, tglx@...utronix.de, vgoyal@...hat.com,
	x86@...nel.org, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	xen-devel@...ts.xensource.com
Cc:	Daniel Kiper <daniel.kiper@...cle.com>
Subject: [PATCH v3 09/11] x86/xen/enlighten: Add init and crash kexec/kdump hooks

Add init and crash kexec/kdump hooks.

Signed-off-by: Daniel Kiper <daniel.kiper@...cle.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

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