Commit 97541912 authored May 06, 2009 by H. Peter Anvin

x86, boot: zero EFLAGS on 32 bits



The 64-bit code already clears EFLAGS as soon as it has a stack.  This
seems like a reasonable precaution, so do it on 32 bits as well.

[ Impact: extra paranoia ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent 0a137736

arch/x86/boot/compressed/head_32.S

+4 −0

Original line number	Diff line number	Diff line
		@@ -91,6 +91,10 @@ ENTRY(startup_32)
		/* Set up the stack */
		leal boot_stack_end(%ebx), %esp

		/* Zero EFLAGS */
		pushl $0
		popfl

		/*
		* Copy the compressed kernel to the end of our buffer
		* where decompression in place becomes safe.