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authorCliff Wickman <cpw@sgi.com>2011-03-31 09:32:02 -0500
committerIngo Molnar <mingo@elte.hu>2011-03-31 18:44:03 +0200
commit818987e9a19c52240ba9b1c20f28f047eef76072 (patch)
tree5b67108d385c2065d6fe49a27236eb9699eeb96f /arch
parentcb6c8520f6f6bba7b7e1a6de3360a8edfd8243b6 (diff)
x86, UV: Fix kdump reboot
After a crash dump on an SGI Altix UV system the crash kernel fails to cause a reboot. EFI mode is disabled in the kdump kernel, so only the reboot_type of BOOT_ACPI works. Signed-off-by: Cliff Wickman <cpw@sgi.com> Cc: rja@sgi.com LKML-Reference: <E1Q5Iuo-00013b-UK@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index d2cf39bc5ec..33b10a0fc09 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -24,6 +24,7 @@
#include <linux/pci.h>
#include <linux/kdebug.h>
#include <linux/delay.h>
+#include <linux/crash_dump.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
@@ -35,6 +36,7 @@
#include <asm/ipi.h>
#include <asm/smp.h>
#include <asm/x86_init.h>
+#include <asm/emergency-restart.h>
DEFINE_PER_CPU(int, x2apic_extra_bits);
@@ -811,4 +813,11 @@ void __init uv_system_init(void)
/* register Legacy VGA I/O redirection handler */
pci_register_set_vga_state(uv_set_vga_state);
+
+ /*
+ * For a kdump kernel the reset must be BOOT_ACPI, not BOOT_EFI, as
+ * EFI is not enabled in the kdump kernel.
+ */
+ if (is_kdump_kernel())
+ reboot_type = BOOT_ACPI;
}