diff options
Diffstat (limited to 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/head_32.S | 10 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 16 |
2 files changed, 12 insertions, 14 deletions
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index 59425e157df3..d7245cf80261 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -88,6 +88,9 @@ ENTRY(startup_32) addl $4095, %ebx andl $~4095, %ebx + /* Set up the stack */ + leal boot_stack_end(%ebx), %esp + /* * Copy the compressed kernel to the end of our buffer * where decompression in place becomes safe. @@ -122,7 +125,7 @@ ENDPROC(startup_32) relocated: /* - * Clear BSS + * Clear BSS (stack is currently empty) */ xorl %eax, %eax leal _bss(%ebx), %edi @@ -132,11 +135,6 @@ relocated: rep stosb /* - * Setup the stack for the decompressor - */ - leal boot_stack_end(%ebx), %esp - -/* * Do the decompression, and jump to the new kernel.. */ movl output_len(%ebx), %eax diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 5bc9052615b6..a0b18426069a 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -249,6 +249,13 @@ ENTRY(startup_64) addq $(32768 + 18 + 4095), %rbx andq $~4095, %rbx + /* Set up the stack */ + leaq boot_stack_end(%rbx), %rsp + + /* Zero EFLAGS */ + pushq $0 + popfq + /* * Copy the compressed kernel to the end of our buffer * where decompression in place becomes safe. @@ -273,7 +280,7 @@ ENTRY(startup_64) relocated: /* - * Clear BSS + * Clear BSS (stack is currently empty) */ xorq %rax, %rax leaq _bss(%rbx), %rdi @@ -282,13 +289,6 @@ relocated: cld rep stosb - /* Setup the stack */ - leaq boot_stack_end(%rip), %rsp - - /* zero EFLAGS after setting rsp */ - pushq $0 - popfq - /* * Do the decompression, and jump to the new kernel.. */ |
