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Message-Id: <4E12DC26020000780004C1C1@nat28.tlf.novell.com>
Date: Tue, 05 Jul 2011 08:40:54 +0100
From: "Jan Beulich" <JBeulich@...ell.com>
To: <mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc: <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86/EFI: properly pre-initialize table pointers
Consumers of the table pointers in struct efi check for
EFI_INVALID_TABLE_ADDR to determine validity, hence these pointers
should all be pre-initialized to this value (rather than zero).
Signed-off-by: Jan Beulich <jbeulich@...ell.com>
---
arch/x86/platform/efi/efi.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
--- 3.0-rc6/arch/x86/platform/efi/efi.c
+++ 3.0-rc6-x86-EFI/arch/x86/platform/efi/efi.c
@@ -51,7 +51,17 @@
int efi_enabled;
EXPORT_SYMBOL(efi_enabled);
-struct efi efi;
+struct efi __read_mostly efi = {
+ .mps = EFI_INVALID_TABLE_ADDR,
+ .acpi = EFI_INVALID_TABLE_ADDR,
+ .acpi20 = EFI_INVALID_TABLE_ADDR,
+ .smbios = EFI_INVALID_TABLE_ADDR,
+ .sal_systab = EFI_INVALID_TABLE_ADDR,
+ .boot_info = EFI_INVALID_TABLE_ADDR,
+ .hcdp = EFI_INVALID_TABLE_ADDR,
+ .uga = EFI_INVALID_TABLE_ADDR,
+ .uv_systab = EFI_INVALID_TABLE_ADDR,
+};
EXPORT_SYMBOL(efi);
struct efi_memory_map memmap;
--
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