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Date: Tue, 22 Sep 2015 11:12:10 -0700 From: Paul Burton <paul.burton@...tec.com> To: <linux-mips@...ux-mips.org> CC: Paul Burton <paul.burton@...tec.com>, Markos Chandras <markos.chandras@...tec.com>, Ralf Baechle <ralf@...ux-mips.org>, <linux-kernel@...r.kernel.org> Subject: [PATCH 02/10] MIPS: CPS: set Status.KX on entry for MIPS64 kernels If the kernel may make use of 64 bit addresses outside of the compatibility address space then we need to set KX such that those accesses can succeed. Do so for MIPS64 kernels. Signed-off-by: Paul Burton <paul.burton@...tec.com> --- arch/mips/kernel/cps-vec.S | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S index 9710db5..99bf6aa 100644 --- a/arch/mips/kernel/cps-vec.S +++ b/arch/mips/kernel/cps-vec.S @@ -25,6 +25,12 @@ .set noreorder +#ifdef CONFIG_64BIT +# define STATUS_BITDEPS ST0_KX +#else +# define STATUS_BITDEPS 0 +#endif + /* * Set dest to non-zero if the core supports the MT ASE, else zero. If * MT is not supported then branch to nomt. @@ -70,7 +76,7 @@ not_nmi: mtc0 t0, CP0_CAUSE /* Setup Status */ - li t0, ST0_CU1 | ST0_CU0 | ST0_BEV + li t0, ST0_CU1 | ST0_CU0 | ST0_BEV | STATUS_BITDEPS mtc0 t0, CP0_STATUS /* -- 2.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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