/* From now, fpsimd_thread_switch() won't touch thread.sve_state */
sve_alloc(current);
+ if (!current->thread.sve_state) {
+ clear_thread_flag(TIF_SVE);
+ return -ENOMEM;
+ }
+
err = __copy_from_user(current->thread.sve_state,
(char __user const *)user->sve +
SVE_SIG_REGS_OFFSET,
restore_saved_sigmask();
}
-static bool cpu_affinity_invalid(struct pt_regs *regs)
-{
- if (!compat_user_mode(regs))
- return false;
-
- /*
- * We're preemptible, but a reschedule will cause us to check the
- * affinity again.
- */
- return !cpumask_test_cpu(raw_smp_processor_id(),
- system_32bit_el0_cpumask());
-}
-
-asmlinkage void do_notify_resume(struct pt_regs *regs,
- unsigned long thread_flags)
+void do_notify_resume(struct pt_regs *regs, unsigned long thread_flags)
{
do {
if (thread_flags & _TIF_NEED_RESCHED) {
if (thread_flags & _TIF_NOTIFY_RESUME) {
tracehook_notify_resume(regs);
rseq_handle_notify_resume(NULL, regs);
-
- /*
- * If we reschedule after checking the affinity
- * then we must ensure that TIF_NOTIFY_RESUME
- * is set so that we check the affinity again.
- * Since tracehook_notify_resume() clears the
- * flag, ensure that the compiler doesn't move
- * it after the affinity check.
- */
- barrier();
-
- if (cpu_affinity_invalid(regs))
- force_sig(SIGKILL);
}
if (thread_flags & _TIF_FOREIGN_FPSTATE)