From: David Woodhouse <[email protected]>

If the bootloader calls the EFI handover entry point as a standard function
call, then it'll have a return address on the stack. We need to pop that
before calling efi_main(), or the arguments will all be out of position on
the stack.

Signed-off-by: David Woodhouse <[email protected]>
---
 arch/x86/boot/compressed/head_32.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/boot/compressed/head_32.S 
b/arch/x86/boot/compressed/head_32.S
index aa4aaf1..ccb2f4a 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -50,8 +50,10 @@ ENTRY(startup_32)
        pushl   %eax
        pushl   %esi
        pushl   %ecx
+       sub     $0x4, %esp
 
        .org 0x30,0x90
+       add     $0x4, %esp
        call    efi_main
        cmpl    $0, %eax
        movl    %eax, %esi
-- 
1.8.0.1

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