diff options
Diffstat (limited to 'arch/x86/xen/xen-head.S')
| -rw-r--r-- | arch/x86/xen/xen-head.S | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S index b65f59a358a2..7f8d8abf4c1a 100644 --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -26,7 +26,7 @@ (1 << XENFEAT_auto_translated_physmap) | \ (1 << XENFEAT_supervisor_mode_kernel) | \ (1 << XENFEAT_hvm_callback_vector)) -/* The XENFEAT_writable_page_tables is not stricly neccessary as we set that +/* The XENFEAT_writable_page_tables is not stricly necessary as we set that * up regardless whether this CONFIG option is enabled or not, but it * clarifies what the right flags need to be. */ @@ -38,13 +38,18 @@ __INIT ENTRY(startup_xen) cld -#ifdef CONFIG_X86_32 - mov %esi,xen_start_info - mov $init_thread_union+THREAD_SIZE,%esp -#else - mov %rsi,xen_start_info - mov $init_thread_union+THREAD_SIZE,%rsp -#endif + + /* Clear .bss */ + xor %eax,%eax + mov $__bss_start, %_ASM_DI + mov $__bss_stop, %_ASM_CX + sub %_ASM_DI, %_ASM_CX + shr $__ASM_SEL(2, 3), %_ASM_CX + rep __ASM_SIZE(stos) + + mov %_ASM_SI, xen_start_info + mov $init_thread_union+THREAD_SIZE, %_ASM_SP + jmp xen_start_kernel __FINIT |