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That's all we know. X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, Huacai Chen , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Jiaxun Yang , qemu-devel@nongnu.org, Aleksandar Markovic , Fuxin Zhang , Huacai Chen , linux-mips@vger.kernel.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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. Signed-off-by: Huacai Chen Co-developed-by: Jiaxun Yang --- arch/mips/Kconfig | 1 + arch/mips/kernel/cpu-probe.c | 1 + arch/mips/kvm/vz.c | 2 +- 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 9f15539..9c4bdac 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1470,6 +1470,7 @@ config CPU_LOONGSON64 select MIPS_L1_CACHE_SHIFT_6 select GPIOLIB select SWIOTLB + select HAVE_KVM help The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor cores implements the MIPS64R2 instruction set with many extensions, diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index be1b556..4432442 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -2008,6 +2008,7 @@ static inline void cpu_probe_loongson(struct cpuinfo_= mips *c, unsigned int cpu) c->writecombine =3D _CACHE_UNCACHED_ACCELERATED; c->ases |=3D (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM | MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2); + c->ases &=3D ~MIPS_ASE_VZ; /* VZ of Loongson-3A2000/3000 is incomplete */ break; case PRID_IMP_LOONGSON_64G: c->cputype =3D CPU_LOONGSON64; diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c index fc0f8d5..5f877a9 100644 --- a/arch/mips/kvm/vz.c +++ b/arch/mips/kvm/vz.c @@ -2695,7 +2695,7 @@ static int kvm_vz_vcpu_load(struct kvm_vcpu *vcpu, in= t cpu) * prevents a SC on the next VCPU from succeeding by matching a LL on * the previous VCPU. */ - if (cpu_guest_has_rw_llb) + if (vcpu->kvm->created_vcpus > 1) write_gc0_lladdr(0); =20 return 0; --=20 2.7.0