3.8.13.5 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx>
commit 6b59e366e074d3962e04f01efb8acc10a33c0e1e upstream.
The check, "IS_ENABLED(CONFIG_X86_64) != efi_enabled(EFI_64BIT)",
in setup_arch() can be replaced by efi_is_enabled(). This change
remove duplicate code and improve readability.
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Olof Johansson <olof@xxxxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
[ kamal: backport to 3.8 as prereq for "Modify UEFI anti-bricking code" ]
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
arch/x86/include/asm/efi.h | 9 ++++++++-
arch/x86/kernel/setup.c | 3 +--
arch/x86/platform/efi/efi.c | 5 -----
3 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 28677c5..60c89f3 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -102,7 +102,14 @@ extern void efi_call_phys_epilog(void);
extern void efi_unmap_memmap(void);
extern void efi_memory_uc(u64 addr, unsigned long size);
-#ifndef CONFIG_EFI
+#ifdef CONFIG_EFI
+
+static inline bool efi_is_native(void)
+{
+ return IS_ENABLED(CONFIG_X86_64) == efi_enabled(EFI_64BIT);
+}
+
+#else
/*
* IF EFI is not configured, have the EFI calls return -ENOSYS.
*/
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 8b24289..1abb796 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1135,8 +1135,7 @@ void __init setup_arch(char **cmdline_p)
* mismatched firmware/kernel archtectures since there is no
* support for runtime services.
*/
- if (efi_enabled(EFI_BOOT) &&
- IS_ENABLED(CONFIG_X86_64) != efi_enabled(EFI_64BIT)) {
+ if (efi_enabled(EFI_BOOT) && !efi_is_native()) {
pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n");
efi_unmap_memmap();
}
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index ce51ed0..27ff3b0 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -69,11 +69,6 @@ struct efi_memory_map memmap;
static struct efi efi_phys __initdata;
static efi_system_table_t efi_systab __initdata;
-static inline bool efi_is_native(void)
-{
- return IS_ENABLED(CONFIG_X86_64) == efi_enabled(EFI_64BIT);
-}
-
unsigned long x86_efi_facility;
/*
--
1.8.1.2
--
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