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Subject[PATCH 7/8] x86/platform/uv: Check EFI Boot to set reboot type
Change to checking for EFI Boot type from previous check on if this
is a KDUMP kernel. This allows for KDUMP kernels that can handle
EFI reboots.

Signed-off-by: Mike Travis <mike.travis@hpe.com>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Reviewed-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
---
arch/x86/kernel/apic/x2apic_uv_x.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)

--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -29,6 +29,7 @@
#include <linux/memory.h>
#include <linux/numa.h>
#include <linux/acpi.h>
+#include <linux/efi.h>

#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
@@ -1503,6 +1504,14 @@ static void __init build_socket_tables(v
}
}

+/* Check which reboot to use */
+static void check_efi_reboot(void)
+{
+ /* If EFI reboot not available, use ACPI reboot */
+ if (!efi_enabled(EFI_BOOT))
+ reboot_type = BOOT_ACPI;
+}
+
/* Setup user proc fs files */
static int proc_hubbed_show(struct seq_file *file, void *data)
{
@@ -1591,6 +1600,8 @@ static __init int uv_system_init_hubless
if (rc >= 0)
uv_setup_proc_files(1);

+ check_efi_reboot();
+
return rc;
}

@@ -1724,12 +1735,7 @@ static void __init uv_system_init_hub(vo
/* 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;
+ check_efi_reboot();
}

/*
--

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