Currently in head.S there are two ways we test to see if we are the boot cpu. By looking at %ebx and by looking at the static variable ready. When changing things around I have found that it gets tricky to preserve %ebx. So this patch just switches head.S over to the more reliable test of always using ready. Hopefully later we can kill these tests entirely. Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> --- arch/i386/kernel/head.S | 7 +------ 1 files changed, 1 insertions(+), 6 deletions(-) diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S index 9b10af6..aa9e28e 100644 --- a/arch/i386/kernel/head.S +++ b/arch/i386/kernel/head.S @@ -157,7 +157,6 @@ page_pde_offset = (__PAGE_OFFSET >> 20); jb 10b movl %edi,(init_pg_tables_end - __PAGE_OFFSET) - xorl %ebx,%ebx /* This is the boot CPU (BSP) */ jmp 3f /* * Non-boot CPU entry point; entered from trampoline.S @@ -228,10 +227,6 @@ ENTRY(startup_32_smp) wrmsr 6: - /* This is a secondary processor (AP) */ - xorl %ebx,%ebx - incl %ebx - #endif /* CONFIG_SMP */ 3: @@ -257,7 +252,7 @@ ENTRY(startup_32_smp) popfl #ifdef CONFIG_SMP - andl %ebx,%ebx + cmpb $0, ready jz 1f /* Initial CPU cleans BSS */ jmp checkCPUtype 1: -- 1.5.1.1.181.g2de0 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
