Commit c213db61 authored Apr 22, 2020 by Jiaxun Yang Committed by Thomas Bogendoerfer Apr 24, 2020

MIPS: Clear XContext at boot time



XContext might be dirty at boot time. We need to clear it
to ensure early stackframe is safe.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

parent d82d500f

arch/mips/kernel/head.S

+3 −0

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

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