[tip:x86/efi] x86, efi: Fix 32-bit EFI handover protocol entry point
Commit-ID: f791620fa7517e1045742c475a7f005db9a634b8 Gitweb: http://git.kernel.org/tip/f791620fa7517e1045742c475a7f005db9a634b8 Author: David Woodhouse AuthorDate: Mon, 7 Jan 2013 22:01:50 + Committer: H. Peter Anvin CommitDate: Sun, 27 Jan 2013 20:19:37 -0800 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 Cc: Link: http://lkml.kernel.org/r/1358513837.2397.247.ca...@shinybook.infradead.org Signed-off-by: H. Peter Anvin Cc: Matt Fleming --- 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 callefi_main cmpl$0, %eax movl%eax, %esi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[tip:x86/efi] x86, efi: Fix 32-bit EFI handover protocol entry point
Commit-ID: f791620fa7517e1045742c475a7f005db9a634b8 Gitweb: http://git.kernel.org/tip/f791620fa7517e1045742c475a7f005db9a634b8 Author: David Woodhouse david.woodho...@intel.com AuthorDate: Mon, 7 Jan 2013 22:01:50 + Committer: H. Peter Anvin h...@linux.intel.com CommitDate: Sun, 27 Jan 2013 20:19:37 -0800 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 david.woodho...@intel.com Cc: sta...@kernel.org Link: http://lkml.kernel.org/r/1358513837.2397.247.ca...@shinybook.infradead.org Signed-off-by: H. Peter Anvin h...@linux.intel.com Cc: Matt Fleming matt.flem...@intel.com --- 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 callefi_main cmpl$0, %eax movl%eax, %esi -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
