diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/asm-offsets_64.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/head64.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_percpu.c | 15 | ||||
| -rw-r--r-- | arch/x86/kernel/smpcommon.c | 3 |
5 files changed, 13 insertions, 15 deletions
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c index f8d1b047ef4..f4cc81bfbf8 100644 --- a/arch/x86/kernel/asm-offsets_64.c +++ b/arch/x86/kernel/asm-offsets_64.c @@ -55,7 +55,6 @@ int main(void) ENTRY(irqcount); ENTRY(cpunumber); ENTRY(irqstackptr); - ENTRY(data_offset); DEFINE(pda_size, sizeof(struct x8664_pda)); BLANK(); #undef ENTRY diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index e28c7a98779..4833f3a1965 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -52,6 +52,7 @@ #include <asm/irqflags.h> #include <asm/paravirt.h> #include <asm/ftrace.h> +#include <asm/percpu.h> /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */ #include <linux/elf-em.h> @@ -1072,10 +1073,10 @@ ENTRY(\sym) TRACE_IRQS_OFF movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ - movq %gs:pda_data_offset, %rbp - subq $EXCEPTION_STKSZ, per_cpu__init_tss + TSS_ist + (\ist - 1) * 8(%rbp) + PER_CPU(init_tss, %rbp) + subq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%rbp) call \do_sym - addq $EXCEPTION_STKSZ, per_cpu__init_tss + TSS_ist + (\ist - 1) * 8(%rbp) + addq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%rbp) jmp paranoid_exit /* %ebx: no swapgs flag */ CFI_ENDPROC END(\sym) diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 1a311293f73..e99b661a97f 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -38,8 +38,6 @@ void __init x86_64_init_pda(void) #else cpu_pda(0) = &_boot_cpu_pda; #endif - cpu_pda(0)->data_offset = - (unsigned long)(__per_cpu_load - __per_cpu_start); pda_init(0); } diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 63d46280227..be1ff34db11 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -125,14 +125,14 @@ static void __init setup_per_cpu_maps(void) #endif } -#ifdef CONFIG_X86_32 -/* - * Great future not-so-futuristic plan: make i386 and x86_64 do it - * the same way - */ +#ifdef CONFIG_X86_64 +unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = { + [0] = (unsigned long)__per_cpu_load, +}; +#else unsigned long __per_cpu_offset[NR_CPUS] __read_mostly; -EXPORT_SYMBOL(__per_cpu_offset); #endif +EXPORT_SYMBOL(__per_cpu_offset); /* * Great future plan: @@ -178,6 +178,7 @@ void __init setup_per_cpu_areas(void) #endif memcpy(ptr, __per_cpu_load, __per_cpu_end - __per_cpu_start); + per_cpu_offset(cpu) = ptr - __per_cpu_start; #ifdef CONFIG_X86_64 cpu_pda(cpu) = (void *)ptr; @@ -190,7 +191,7 @@ void __init setup_per_cpu_areas(void) else memset(cpu_pda(cpu), 0, sizeof(*cpu_pda(cpu))); #endif - per_cpu_offset(cpu) = ptr - __per_cpu_start; + per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu); DBG("PERCPU: cpu %4d %p\n", cpu, ptr); } diff --git a/arch/x86/kernel/smpcommon.c b/arch/x86/kernel/smpcommon.c index 397e309839d..84395fabc41 100644 --- a/arch/x86/kernel/smpcommon.c +++ b/arch/x86/kernel/smpcommon.c @@ -4,10 +4,10 @@ #include <linux/module.h> #include <asm/smp.h> -#ifdef CONFIG_X86_32 DEFINE_PER_CPU(unsigned long, this_cpu_off); EXPORT_PER_CPU_SYMBOL(this_cpu_off); +#ifdef CONFIG_X86_32 /* * Initialize the CPU's GDT. This is either the boot CPU doing itself * (still using the master per-cpu area), or a CPU doing it for a @@ -24,7 +24,6 @@ __cpuinit void init_gdt(int cpu) write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S); - per_cpu(this_cpu_off, cpu) = __per_cpu_offset[cpu]; per_cpu(cpu_number, cpu) = cpu; } #endif |