MIPS: Clear XContext at boot time (c213db61) · Commits · 戴 / test

XContext might be dirty at boot time. We need to clear it to ensure early stackframe is safe. Signed-off-by:

arch/mips/kernel/head.S

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -132,6 +132,9 @@ dtb_found:
	#endif		#endif

	MTC0 zero, CP0_CONTEXT # clear context register		MTC0 zero, CP0_CONTEXT # clear context register
			#ifdef CONFIG_64BIT
			MTC0 zero, CP0_XCONTEXT
			#endif
	PTR_LA $28, init_thread_union		PTR_LA $28, init_thread_union
	/* Set the SP after an empty pt_regs. */		/* Set the SP after an empty pt_regs. */
	PTR_LI sp, _THREAD_SIZE - 32 - PT_SIZE		PTR_LI sp, _THREAD_SIZE - 32 - PT_SIZE