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From: Huacai Chen <chenhc@lemote.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org,
	Fuxin Zhang <zhangfx@lemote.com>,
	Huacai Chen <chenhuacai@gmail.com>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Huacai Chen <chenhc@lemote.com>
Subject: [PATCH V7 00/15] KVM: MIPS: Add Loongson-3 support (Host Side)
Date: Sat, 23 May 2020 15:56:27 +0800
Message-ID: <1590220602-3547-1-git-send-email-chenhc@lemote.com> (raw)

We are preparing to add KVM support for Loongson-3. VZ extension is
fully supported in Loongson-3A R4+, and we will not care about old CPUs
(at least now). We already have a full functional Linux kernel (based
on Linux-5.4.x LTS) and QEMU (based on 5.0.0) and their git repositories
are here:

QEMU: https://github.com/chenhuacai/qemu
Kernel: https://github.com/chenhuacai/linux

Of course these two repositories need to be rework and not suitable for
upstream (especially the commits need to be splitted). We show them here
is just to tell others what we have done, and how KVM/Loongson will look
like.

Our plan is make the KVM host side be upstream first, and after that,
we will make the KVM guest side and QEMU emulator be upstream.

V1 -> V2:
1, Remove "mips: define pud_index() regardless of page table folding"
   because it has been applied.
2, Make Loongson-specific code be guarded by CONFIG_CPU_LOONGSON64.

V2 -> V3:
1, Emulate a reduced feature list of CPUCFG.
2, Fix all possible checkpatch.pl errors and warnings.

V3 -> V4:
1, Emulate LOONGSON_CFG0/LOONGSON_CFG3 in CPUCFG correctly.
2, Update commit messages to explain Loongson-3 Virtual IPI.
3, Add Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>.

V4 -> V5:
1, Fix a typo.
2, Update MAINTAINERS.

V5 -> V6:
1, Fix a mismatch during rebasing.
2, Add Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>.

V6 -> V7:
1, Rebase on latest mips-next (Config6 feature bits definition updated).

Xing Li(2):
 KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data)
 KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits

Huacai Chen(13):
 KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16
 KVM: MIPS: Add EVENTFD support which is needed by VHOST
 KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd
 KVM: MIPS: Introduce and use cpu_guest_has_ldpte
 KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3
 KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3
 KVM: MIPS: Add more types of virtual interrupts
 KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support
 KVM: MIPS: Add CPUCFG emulation for Loongson-3
 KVM: MIPS: Add CONFIG6 and DIAG registers emulation
 KVM: MIPS: Add more MMIO load/store instructions emulation
 KVM: MIPS: Enable KVM support for Loongson-3
 MAINTAINERS: Update KVM/MIPS maintainers

Signed-off-by: Huacai Chen <chenhc@lemote.com>
---
 MAINTAINERS                          |   4 +-
 arch/mips/Kconfig                    |   1 +
 arch/mips/include/asm/cpu-features.h |   3 +
 arch/mips/include/asm/kvm_host.h     |  52 +++-
 arch/mips/include/asm/mipsregs.h     |   7 +
 arch/mips/include/uapi/asm/inst.h    |  11 +
 arch/mips/kernel/cpu-probe.c         |   2 +
 arch/mips/kvm/Kconfig                |   1 +
 arch/mips/kvm/Makefile               |   5 +-
 arch/mips/kvm/emulate.c              | 503 ++++++++++++++++++++++++++++++++++-
 arch/mips/kvm/entry.c                |  19 +-
 arch/mips/kvm/interrupt.c            |  93 +------
 arch/mips/kvm/interrupt.h            |  14 +-
 arch/mips/kvm/loongson_ipi.c         | 214 +++++++++++++++
 arch/mips/kvm/mips.c                 |  49 +++-
 arch/mips/kvm/tlb.c                  |  41 +++
 arch/mips/kvm/trap_emul.c            |   3 +
 arch/mips/kvm/vz.c                   | 237 ++++++++++++-----
 18 files changed, 1092 insertions(+), 167 deletions(-)
 create mode 100644 arch/mips/kvm/loongson_ipi.c
--
2.7.0

             reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-23  7:56 Huacai Chen [this message]
2020-05-23  7:56 ` [PATCH V7 01/15] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data) Huacai Chen
2020-05-23  7:56 ` [PATCH V7 02/15] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits Huacai Chen
2020-05-23  7:56 ` [PATCH V7 03/15] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16 Huacai Chen
2020-05-23  7:56 ` [PATCH V7 04/15] KVM: MIPS: Add EVENTFD support which is needed by VHOST Huacai Chen
2020-05-23  7:56 ` [PATCH V7 05/15] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd Huacai Chen
2020-05-23  7:56 ` [PATCH V7 06/15] KVM: MIPS: Introduce and use cpu_guest_has_ldpte Huacai Chen
2020-05-23  7:56 ` [PATCH V7 07/15] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3 Huacai Chen
2020-05-23  7:56 ` [PATCH V7 08/15] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3 Huacai Chen
2020-05-23  7:56 ` [PATCH V7 09/15] KVM: MIPS: Add more types of virtual interrupts Huacai Chen
2020-05-23  7:56 ` [PATCH V7 10/15] KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support Huacai Chen
2020-05-23  7:56 ` [PATCH V7 11/15] KVM: MIPS: Add CPUCFG emulation for Loongson-3 Huacai Chen
2020-05-23  7:56 ` [PATCH V7 12/15] KVM: MIPS: Add CONFIG6 and DIAG registers emulation Huacai Chen
2020-05-23 13:27   ` WANG Xuerui
     [not found]     ` <CAHiYmc6YDw7=mqXfMdgSfeR-HVd2Ec+sQVquM=Z6jLke2s-VEw@mail.gmail.com>
2020-05-24  2:45       ` Huacai Chen
2020-05-23  7:56 ` [PATCH V7 13/15] KVM: MIPS: Add more MMIO load/store instructions emulation Huacai Chen
2020-05-23  7:56 ` [PATCH V7 14/15] KVM: MIPS: Enable KVM support for Loongson-3 Huacai Chen
2020-05-23  7:56 ` [PATCH V7 15/15] MAINTAINERS: Update KVM/MIPS maintainers Huacai Chen
2020-05-23  9:01 ` [PATCH V7 00/15] KVM: MIPS: Add Loongson-3 support (Host Side) Aleksandar Markovic

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