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| author | Paul Burton <paul.burton@imgtec.com> | 2017-08-08 01:18:04 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-08-08 13:57:10 +0200 |
| commit | 527f10285bc3f700407bf3aab0ea7b3b9f9338da (patch) | |
| tree | dd1496df8e7dc11862daeb4694175d80c4940ea7 /arch/mips | |
| parent | MIPS: PCI: Fix smp_processor_id() in preemptible (diff) | |
| download | linux-527f10285bc3f700407bf3aab0ea7b3b9f9338da.tar.xz linux-527f10285bc3f700407bf3aab0ea7b3b9f9338da.zip | |
MIPS: Prevent building MT support for microMIPS kernels
We don't currently support the MT ASE for microMIPS kernels, and there
are no CPUs currently in existence that use both. They can however both
be enabled in Kconfig, resulting in build failures such as:
AS arch/mips/kernel/cps-vec.o
arch/mips/kernel/cps-vec.S: Assembler messages:
arch/mips/kernel/cps-vec.S:242: Warning: the 32-bit microMIPS architecture does not support the `mt' extension
arch/mips/kernel/cps-vec.S:276: Error: unrecognized opcode `mttc0 $13,$2,2'
arch/mips/kernel/cps-vec.S:282: Error: unrecognized opcode `mttc0 $8,$1,2'
arch/mips/kernel/cps-vec.S:285: Error: unrecognized opcode `mttc0 $0,$2,1'
...
Fix this by preventing MT from being enabled when targeting microMIPS.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16951/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 8dd20358464f..48d91d5be4e9 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2260,7 +2260,7 @@ config CPU_R4K_CACHE_TLB config MIPS_MT_SMP bool "MIPS MT SMP support (1 TC on each available VPE)" - depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 + depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_IRQ_EI select SYNC_R4K |