--- zzzz-none-000/linux-5.4.213/arch/mips/kernel/process.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/arch/mips/kernel/process.c	2024-08-14 09:01:30.000000000 +0000
@@ -75,7 +75,9 @@
 	lose_fpu(0);
 	clear_thread_flag(TIF_MSA_CTX_LIVE);
 	clear_used_math();
+#ifdef CONFIG_MIPS_FP_SUPPORT
 	atomic_set(&current->thread.bd_emu_frame, BD_EMUFRAME_NONE);
+#endif
 	init_dsp();
 	regs->cp0_epc = pc;
 	regs->regs[29] = sp;
@@ -176,7 +178,9 @@
 	clear_tsk_thread_flag(p, TIF_FPUBOUND);
 #endif /* CONFIG_MIPS_MT_FPAFF */
 
+#ifdef CONFIG_MIPS_FP_SUPPORT
 	atomic_set(&p->thread.bd_emu_frame, BD_EMUFRAME_NONE);
+#endif
 
 	if (clone_flags & CLONE_SETTLS)
 		ti->tp_value = tls;
@@ -361,6 +365,8 @@
 
 	if (ip->i_format.opcode == addiu_op ||
 	    ip->i_format.opcode == daddiu_op) {
+		if (ip->i_format.simmediate > 0)
+			return 0;
 		*frame_size = -ip->i_format.simmediate;
 		return 1;
 	}
@@ -650,8 +656,10 @@
 {
 	unsigned long top = TASK_SIZE & PAGE_MASK;
 
-	/* One page for branch delay slot "emulation" */
-	top -= PAGE_SIZE;
+	if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT)) {
+		/* One page for branch delay slot "emulation" */
+		top -= PAGE_SIZE;
+	}
 
 	/* Space for the VDSO, data page & GIC user page */
 	top -= PAGE_ALIGN(current->thread.abi->vdso->size);