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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D41EECAAD3 for ; Thu, 15 Sep 2022 00:05:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229735AbiIOAE5 (ORCPT ); Wed, 14 Sep 2022 20:04:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbiIOAEy (ORCPT ); Wed, 14 Sep 2022 20:04:54 -0400 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 663C5AE64 for ; Wed, 14 Sep 2022 17:04:51 -0700 (PDT) Received: by mail-pl1-x64a.google.com with SMTP id o1-20020a170902d4c100b00177f59a9889so11380530plg.13 for ; Wed, 14 Sep 2022 17:04:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date; bh=q3GD4NwlYUx8gdey9sVlOvilOE2N0wjdZ+RZokGXIPk=; b=ptOjhF7RAuYFIrc21q9YMD99UfLwglHnRBYUx2py1KYcThN9CU/C4yYf28D+VvHsIJ DeG3/ZbIfDRAJv37U7foDlw4KVhM8Su7Bi5hzto9KpO8AymXg3jejexjVANsFbx1PuLM rrcjorBXqt4sbozTIc9ercFwsuauJPRUSWuf2JxjRGQwpyScZFYGeJovw3MTBBiAeP9J jMNHpDUeZRryQrDvfhti7EVvExFZ9R9coGQd3Uqk1s9TFDGnrrP1G50AJaU8ZRia+grF z9Hm3jRgpflSsg2AV9UtfIX0YZsKhW7+LPYeDe6EJpLxvHwIjiYlR+GhvPArtBtJZNnY ZaLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date; bh=q3GD4NwlYUx8gdey9sVlOvilOE2N0wjdZ+RZokGXIPk=; b=2buO6sBDLM2hunRvzpuDpcf8xabah0/IK+3n2V/DKXXbrdCvANlchcz/sjWb8ltepD 6JHKQA9kuAHlecZl8K2JizeA45N/h4RpLio1wyLR3J7gu72oAbFePRlnC4CjrulYCDwY g/vdWJyGbInMdIB1O9wfraPnKJFTWKmhc+HQI5WhXh9GlXSUmMbvGexi2nDjoO3vJ3vZ 2GQSgJ79MgxCNtDniaXQDMQuG0JjxIfZjXBdMNgme6lP0qQ+k5w3dVLxNh7m/N2eMJQm FpFAdwbPQHTsNEVPPmlLaKILQC1hzIi6qPDgXWD+KslPHOc1UGWR5FegpsLyAv3RMNmB qrvg== X-Gm-Message-State: ACrzQf0rwezygfoqi3OcFJnfNh71U4w8hlCULrw6YV6+kovLQ1uiv1dk g/3tUAW0sIHPJp8oihxK3zDAmkxESUrTtp+o X-Google-Smtp-Source: AMsMyM51rYBali47oquei1QQzpoYjbSCTo1142oz9rhffNt+VP5FbcWjjAwhQozvf3hlJqGVJ1OB387FELZgYN1i X-Received: from vannapurve2.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:41f8]) (user=vannapurve job=sendgmr) by 2002:a17:902:ab8e:b0:174:11d5:b2ec with SMTP id f14-20020a170902ab8e00b0017411d5b2ecmr1544268plr.18.1663200290870; Wed, 14 Sep 2022 17:04:50 -0700 (PDT) Date: Thu, 15 Sep 2022 00:04:40 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.37.2.789.g6183377224-goog Message-ID: <20220915000448.1674802-1-vannapurve@google.com> Subject: [V2 PATCH 0/8] Execute hypercalls from guests according to cpu type From: Vishal Annapurve To: x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: pbonzini@redhat.com, shuah@kernel.org, bgardon@google.com, seanjc@google.com, oupton@google.com, peterx@redhat.com, vkuznets@redhat.com, dmatlack@google.com, Vishal Annapurve Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series is posted in context of the discussion at: https://lore.kernel.org/lkml/Ywa9T+jKUpaHLu%2Fl@google.com/ Changes in v2: * Addressed comments from Andrew and David * Common function with constructor attribute used to setup initial state * Changes are split in more logical granules as per feedback Major changes: 1) Move common startup logic to a single function in kvm_util.c 2) Introduce following APIs: kvm_selftest_arch_init: to perform arch specific common startup. kvm_arch_post_vm_elf_load: to update the guest memory state to convey common information to guests. 3) For x86, capture cpu type at startup and pass on the cpu type to guest after guest elf is loaded. 4) Execute hypercall instruction from within guest VMs according to the cpu type. This will help prevent an extra kvm exit during hypercall execution. Vishal Annapurve (8): KVM: selftests: move common startup logic to kvm_util.c KVM: selftests: Add arch specific initialization KVM: selftests: Add arch specific post vm load setup KVM: selftests: x86: Precompute the result for is_{intel,amd}_cpu() KVM: selftests: x86: delete svm_vmcall_test KVM: selftests: x86: Execute cpu specific hypercall from nested guests Kvm: selftests: x86: Execute cpu specific vmcall instruction KVM: selftests: x86: xen: Execute cpu specific vmcall instruction tools/testing/selftests/kvm/.gitignore | 1 - .../selftests/kvm/aarch64/arch_timer.c | 3 - .../selftests/kvm/aarch64/hypercalls.c | 2 - .../testing/selftests/kvm/aarch64/vgic_irq.c | 3 - .../selftests/kvm/include/kvm_util_base.h | 9 +++ .../selftests/kvm/include/x86_64/processor.h | 10 +++ .../selftests/kvm/include/x86_64/vmx.h | 9 --- .../selftests/kvm/lib/aarch64/processor.c | 22 +++--- tools/testing/selftests/kvm/lib/elf.c | 2 + tools/testing/selftests/kvm/lib/kvm_util.c | 8 ++ .../selftests/kvm/lib/riscv/processor.c | 8 ++ .../selftests/kvm/lib/s390x/processor.c | 8 ++ .../selftests/kvm/lib/x86_64/perf_test_util.c | 2 +- .../selftests/kvm/lib/x86_64/processor.c | 38 +++++++++- .../testing/selftests/kvm/memslot_perf_test.c | 3 - tools/testing/selftests/kvm/rseq_test.c | 3 - tools/testing/selftests/kvm/s390x/memop.c | 2 - tools/testing/selftests/kvm/s390x/resets.c | 2 - .../selftests/kvm/s390x/sync_regs_test.c | 3 - .../selftests/kvm/set_memory_region_test.c | 3 - .../kvm/x86_64/cr4_cpuid_sync_test.c | 3 - .../kvm/x86_64/emulator_error_test.c | 3 - .../selftests/kvm/x86_64/hyperv_cpuid.c | 3 - .../selftests/kvm/x86_64/platform_info_test.c | 3 - .../kvm/x86_64/pmu_event_filter_test.c | 3 - .../selftests/kvm/x86_64/set_sregs_test.c | 3 - tools/testing/selftests/kvm/x86_64/smm_test.c | 2 +- .../testing/selftests/kvm/x86_64/state_test.c | 8 +- .../kvm/x86_64/svm_nested_soft_inject_test.c | 3 - .../selftests/kvm/x86_64/svm_vmcall_test.c | 74 ------------------- .../selftests/kvm/x86_64/sync_regs_test.c | 3 - .../selftests/kvm/x86_64/userspace_io_test.c | 3 - .../kvm/x86_64/userspace_msr_exit_test.c | 3 - .../kvm/x86_64/vmx_apic_access_test.c | 2 +- .../selftests/kvm/x86_64/vmx_dirty_log_test.c | 2 +- .../kvm/x86_64/vmx_nested_tsc_scaling_test.c | 2 +- .../kvm/x86_64/vmx_preemption_timer_test.c | 2 +- .../kvm/x86_64/vmx_tsc_adjust_test.c | 2 +- .../selftests/kvm/x86_64/xen_shinfo_test.c | 64 ++++++---------- .../selftests/kvm/x86_64/xen_vmcall_test.c | 14 +++- 40 files changed, 138 insertions(+), 205 deletions(-) delete mode 100644 tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c -- 2.37.2.789.g6183377224-goog