From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD31CCA90AF for ; Wed, 13 May 2020 08:42:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 888D220740 for ; Wed, 13 May 2020 08:42:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BPe0yXCW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732323AbgEMImk (ORCPT ); Wed, 13 May 2020 04:42:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726092AbgEMImk (ORCPT ); Wed, 13 May 2020 04:42:40 -0400 Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1499CC061A0C; Wed, 13 May 2020 01:42:40 -0700 (PDT) Received: by mail-pg1-x541.google.com with SMTP id n11so7474931pgl.9; Wed, 13 May 2020 01:42:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id; bh=fVefEu093xh7eZgov8vcbtYrPYBZHyOWLgcytUR5N6w=; b=BPe0yXCWZdQh00SOsRIYzYvEnqSGMWBKRRh42Sx4ThYuVO2bL3Ncpy20sIEKFeiKci nq2ljWW1fu7btXEDv1vJ0ojL4oBRK+3TU/JsdxQa7UlbUommg5l0wjE6F1B0Iwjt4iJe Lubz0EbH5qbBz/WgMef3Yjob8F9KA102D4Pmr4hetRG2jKAgXhGGTp9arGQAaKlv9iRt seE1+3OQjFs4KcWIVeF0c6daN0a3068XWFbfPrWXvAgLxc1hm0D4PBQWBt6WCecpFObw 6AAbA6ujX/Zcqa4+3ccLk19kpmqrA2krGVPGL9EBt4NJYTmkVlQMiF+/syDofIas9pIc tuWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id; bh=fVefEu093xh7eZgov8vcbtYrPYBZHyOWLgcytUR5N6w=; b=ImkDkvRkqg5EOl5FoBJ+nxtHWofUlef+mmXQ20KcMCHSPQac+kHd0SGExudtBVYEk6 R7NyZIicXdekpfzXg2FA+tyeO3Zs9OVkZy9MCijxQ+nZDKOD3Yvp3kY1F5PhgIJiD6sc DPGSGM87HJpqthGymShVK9PR0tf5XaeZCoMWz4Ng4y7TDZMZDOSAe0YzkR98K4vi/JVy PM7dFm+uGiFWz+VwG3xgdzW8AQywsEWQtUTHXFHiv1Q02D+87RZ4wTr1WHhlqfuhoSy0 gF3+JwZTeQgGjraHGM8cOmc8x+QkVsZlOcLUKydqNiGwkrOX2a+zanFEYqLVztxsE12G wE+Q== X-Gm-Message-State: AGi0PuZKC3XgLx1LtU+dJV0diagSKyKhMSktQfXAnfJEIrfLF/EHYaAf Yw23ukYe+XPcTLFVgMrUdp4= X-Google-Smtp-Source: APiQypJh7/gq6dGqLnTOpjc3yLkAoDsgAd3blvRoL1dAV2zBjuqp8ZGq7OTY+AF+t2C0KkPWXqgmDQ== X-Received: by 2002:aa7:957c:: with SMTP id x28mr25165250pfq.31.1589359359627; Wed, 13 May 2020 01:42:39 -0700 (PDT) Received: from software.domain.org (28.144.92.34.bc.googleusercontent.com. [34.92.144.28]) by smtp.gmail.com with ESMTPSA id o21sm14645570pjr.37.2020.05.13.01.42.36 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 13 May 2020 01:42:39 -0700 (PDT) From: Huacai Chen To: Paolo Bonzini , Thomas Bogendoerfer , Aleksandar Markovic Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org, Fuxin Zhang , Huacai Chen , Jiaxun Yang , Huacai Chen Subject: [PATCH V5 00/15] KVM: MIPS: Add Loongson-3 support (Host Side) Date: Wed, 13 May 2020 16:42:31 +0800 Message-Id: <1589359366-1669-1-git-send-email-chenhc@lemote.com> X-Mailer: git-send-email 2.7.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org 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 . V4 -> V5: 1, Fix a typo. 2, Update MAINTAINERS. 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 --- 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