diff options
| -rw-r--r-- | arch/x86/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 15 | ||||
| -rw-r--r-- | arch/x86/kernel/trampoline.c | 18 |
3 files changed, 19 insertions, 15 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index fdd8395e0ed3..530ed6a4a031 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -28,6 +28,7 @@ obj-y += alternative.o i8253.o obj-$(CONFIG_X86_64) += pci-nommu_64.o bugs_64.o obj-y += tsc_$(BITS).o io_delay.o rtc.o +obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o obj-y += i387.o obj-y += ptrace.o obj-y += ds.o diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 424600e671bd..e6abe8a49b1f 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -140,9 +140,6 @@ static atomic_t init_deasserted; static int boot_cpu_logical_apicid; -/* ready for x86_64, no harm for x86, since it will overwrite after alloc */ -unsigned char *trampoline_base = __va(TRAMPOLINE_BASE); - /* representing cpus for which sibling maps can be computed */ static cpumask_t cpu_sibling_setup_map; @@ -550,18 +547,6 @@ cpumask_t cpu_coregroup_map(int cpu) return c->llc_shared_map; } -/* - * Currently trivial. Write the real->protected mode - * bootstrap into the page concerned. The caller - * has made sure it's suitably aligned. - */ -unsigned long setup_trampoline(void) -{ - memcpy(trampoline_base, trampoline_data, - trampoline_end - trampoline_data); - return virt_to_phys(trampoline_base); -} - #ifdef CONFIG_X86_32 /* * We are called very early to get the low memory for the diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c new file mode 100644 index 000000000000..abbf199adebb --- /dev/null +++ b/arch/x86/kernel/trampoline.c @@ -0,0 +1,18 @@ +#include <linux/io.h> + +#include <asm/trampoline.h> + +/* ready for x86_64, no harm for x86, since it will overwrite after alloc */ +unsigned char *trampoline_base = __va(TRAMPOLINE_BASE); + +/* + * Currently trivial. Write the real->protected mode + * bootstrap into the page concerned. The caller + * has made sure it's suitably aligned. + */ +unsigned long setup_trampoline(void) +{ + memcpy(trampoline_base, trampoline_data, + trampoline_end - trampoline_data); + return virt_to_phys(trampoline_base); +} |
