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| author |   Huacai Chen <chenhc@lemote.com> | 2020-05-23 15:56:41 +0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-06-04 13:51:53 -0400 |
| commit | 0f78355c450835053fed85828c9d6526594c0921 (patch) | |
| tree | 6438828e454aac7fed9d9efaf21df7c275183fd9 /arch/mips/kernel/cpu-probe.c | |
| parent | KVM: MIPS: Add more MMIO load/store instructions emulation (diff) | |
| download | linux-dev-0f78355c450835053fed85828c9d6526594c0921.tar.xz linux-dev-0f78355c450835053fed85828c9d6526594c0921.zip | |
KVM: MIPS: Enable KVM support for Loongson-3
This patch enable KVM support for Loongson-3 by selecting HAVE_KVM, but
only enable KVM/VZ on Loongson-3A R4+ (because VZ of early processors
are incomplete). Besides, Loongson-3 support SMP guests, so we clear the
linked load bit of LLAddr in kvm_vz_vcpu_load() if the guest has more
than one VCPUs.
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-15-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index f0e7f2d7bd9a..def1659fe262 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -2076,6 +2076,7 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu) c->writecombine = _CACHE_UNCACHED_ACCELERATED; c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM | MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2); + c->ases &= ~MIPS_ASE_VZ; /* VZ of Loongson-3A2000/3000 is incomplete */ break; case PRID_IMP_LOONGSON_64G: c->cputype = CPU_LOONGSON64; |