From: Borislav Petkov <b...@suse.de>
All GCC versions expect the direction flag to be cleared (DF=0) so move
this to the default entry point for each core.
Signed-off-by: Borislav Petkov <b...@suse.de>
---
arch/x86/kernel/head_32.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index 75e96d7e4e5f..8b2a8a824fc6 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -322,10 +322,11 @@ default_entry:
* debugger if this code is traced. Best to initialize before switching to
* protected mode.
*/
-
pushl $0
popfl
+ cld # GCC wants DF=0 at all times
+
/*
* New page tables may be in 4Mbyte page mode and may be using the global
pages.
*
@@ -463,7 +464,6 @@ is486:
xorl %eax,%eax # Clear LDT
lldt %ax
- cld # gcc2 wants the direction flag cleared at all
times
pushl $0 # fake return address for unwinder
jmp *(initial_code)
--
1.8.1.3.535.ga923c31
--
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