commit: f791620fa7517e1045742c475a7f005db9a634b8 From: David Woodhouse <[email protected]> Date: Mon, 7 Jan 2013 22:01:50 +0000 Subject: x86, efi: Fix 32-bit EFI handover protocol entry point
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]> Cc: <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]> Cc: Matt Fleming <[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 -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
