[PATCH v1 01/12] x86/smp: Make start_secondary() and initial_pg_pmd visible globally

From: Boris Ostrovsky
Date: Fri Jan 22 2016 - 16:36:38 EST


Xen's HVMlite guests will want to use them.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
arch/x86/include/asm/smp.h | 1 +
arch/x86/kernel/head_32.S | 2 +-
arch/x86/kernel/smpboot.c | 2 +-
3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index dfcf072..739abb0 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -147,6 +147,7 @@ void x86_idle_thread_init(unsigned int cpu, struct task_struct *idle);

void smp_store_boot_cpu_info(void);
void smp_store_cpu_info(int id);
+void start_secondary(void *unused);
#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)

#else /* !CONFIG_SMP */
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index 6bc9ae2..eeb5c42 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -666,7 +666,7 @@ ENTRY(setup_once_ref)
__PAGE_ALIGNED_BSS
.align PAGE_SIZE
#ifdef CONFIG_X86_PAE
-initial_pg_pmd:
+ENTRY(initial_pg_pmd)
.fill 1024*KPMDS,4,0
#else
ENTRY(initial_page_table)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 24d57f7..cba00bc 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -199,7 +199,7 @@ static int enable_start_cpu0;
/*
* Activate a secondary processor.
*/
-static void notrace start_secondary(void *unused)
+void notrace start_secondary(void *unused)
{
/*
* Don't put *anything* before cpu_init(), SMP booting is too
--
1.7.1