MIPS: Don't use RI/XI with 32-bit kernels on 64-bit CPUs

The TLB handlers cannot handle this case, so disable it for now.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7007/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index f75dd7055508..c7d8c997d93e 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -110,9 +110,15 @@
 #ifndef cpu_has_smartmips
 #define cpu_has_smartmips       (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
 #endif
+
 #ifndef cpu_has_rixi
-#define cpu_has_rixi            (cpu_data[0].options & MIPS_CPU_RIXI)
+# ifdef CONFIG_64BIT
+# define cpu_has_rixi           (cpu_data[0].options & MIPS_CPU_RIXI)
+# else /* CONFIG_32BIT */
+# define cpu_has_rixi           ((cpu_data[0].options & MIPS_CPU_RIXI) && !cpu_has_64bits)
+# endif
 #endif
+
 #ifndef cpu_has_mmips
 # ifdef CONFIG_SYS_SUPPORTS_MICROMIPS
 #  define cpu_has_mmips         (cpu_data[0].options & MIPS_CPU_MICROMIPS)
@@ -120,6 +126,7 @@
 #  define cpu_has_mmips         0
 # endif
 #endif
+
 #ifndef cpu_has_vtag_icache
 #define cpu_has_vtag_icache     (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
 #endif