+
+#ifndef CONFIG_ARM64_SVE
+ b el0_svc_naked
+#else
+ tbz x16, #TIF_SVE, el0_svc_naked // Skip unless TIF_SVE set:
+ bic x16, x16, #_TIF_SVE // discard SVE state
+ str x16, [tsk, #TSK_TI_FLAGS]
+
+ /*
+ * task_fpsimd_load() won't be called to update CPACR_EL1 in
+ * ret_to_user unless TIF_FOREIGN_FPSTATE is still set, which only
+ * happens if a context switch or kernel_neon_begin() or context
+ * modification (sigreturn, ptrace) intervenes.
+ * So, ensure that CPACR_EL1 is already correct for the fast-path case:
+ */
+ mrs x9, cpacr_el1
+ bic x9, x9, #CPACR_EL1_ZEN_EL0EN // disable SVE for el0
+ msr cpacr_el1, x9 // synchronised by eret to el0
+#endif /* CONFIG_ARM64_SVE */
+