sched: Fix kABI for task->pasid_activated

category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO
CVE: NA

Intel-SIG: sched: Fix kABI for task->pasid_activated.

-------------------------------------------------

In commit
("sched: Define and initialize a flag to identify valid PASID in the task"),
a new single bit field 'pasid_activated' is added to the middle of
'struct task_struct' that causes kABI breakage.

Fix it by using KABI_FILL_HOLE() API for task->pasid_activated.
Signed-off-by: NXiaochen Shen <xiaochen.shen@intel.com>

include/linux/sched.h

@@ -873,7 +873,7 @@ struct task_struct {
 	unsigned			in_memstall:1;
 #endif
 #ifdef CONFIG_IOMMU_SVA
-	unsigned			pasid_activated:1;
+	KABI_FILL_HOLE(unsigned		pasid_activated:1)
 #endif
 
 	unsigned long			atomic_flags; /* Flags requiring atomic access. */