* IPI based ptc implementation and A-step IPI implementation.
* Rohit Seth <rohit.seth@intel.com>
* Ken Chen <kenneth.w.chen@intel.com>
+ * Christophe de Dinechin <ddd@hp.com>: Avoid ptc.e on memory allocation
*/
#include <linux/module.h>
#include <linux/init.h>
{
static DEFINE_SPINLOCK(ptcg_lock);
- if (mm != current->active_mm || !current->mm) {
- flush_tlb_all();
- return;
+ struct mm_struct *active_mm = current->active_mm;
+
+ if (mm != active_mm) {
+ /* Restore region IDs for mm */
+ if (mm && active_mm) {
+ activate_context(mm);
+ } else {
+ flush_tlb_all();
+ return;
+ }
}
/* HW requires global serialization of ptc.ga. */
} while (start < end);
}
spin_unlock(&ptcg_lock);
+
+ if (mm != active_mm) {
+ activate_context(active_mm);
+ }
}
void