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-rw-r--r--arch/x86/kernel/smpboot.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 763df77343d..03273b6c272 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -638,7 +638,7 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
* target processor state.
*/
startup_ipi_hook(phys_apicid, (unsigned long) start_secondary,
- (unsigned long)stack_start.sp);
+ stack_start);
/*
* Run STARTUP IPI loop.
@@ -785,7 +785,7 @@ do_rest:
#endif
early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
initial_code = (unsigned long)start_secondary;
- stack_start.sp = (void *) c_idle.idle->thread.sp;
+ stack_start = c_idle.idle->thread.sp;
/* start_ip had better be page-aligned! */
start_ip = setup_trampoline();
@@ -1402,8 +1402,9 @@ static inline void mwait_play_dead(void)
unsigned int highest_subcstate = 0;
int i;
void *mwait_ptr;
+ struct cpuinfo_x86 *c = __this_cpu_ptr(&cpu_info);
- if (!cpu_has(__this_cpu_ptr(&cpu_info), X86_FEATURE_MWAIT))
+ if (!(cpu_has(c, X86_FEATURE_MWAIT) && mwait_usable(c)))
return;
if (!cpu_has(__this_cpu_ptr(&cpu_info), X86_FEATURE_CLFLSH))
return;