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=-9.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 B067FC2D0A3 for ; Wed, 4 Nov 2020 21:24:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 60A122080D for ; Wed, 4 Nov 2020 21:24:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="GCd/QslB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732114AbgKDVYj (ORCPT ); Wed, 4 Nov 2020 16:24:39 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:60035 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732110AbgKDVYj (ORCPT ); Wed, 4 Nov 2020 16:24:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604525077; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gwVbUB2HzUIWHEqhXwEt7jlNke8HHA1zqk/x2+KYQVk=; b=GCd/QslBighjGrnCj5hjbf275sUTvuBkk8sRpNjD3KkKqxyLekXu9RSbVS0rToB7yPrgts Y2AJkT3sIpMru9HziswL8O0Oq8O1ZZF+99Cg7qwCvGqsU/pPRvDao2WW0S+M+jMngfhdQW DLbkq6+C4lGt9a9cfxJVbUlrPey+Jo0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-273-UAYa3vhqOjiJkd_Nj1oPtA-1; Wed, 04 Nov 2020 16:24:34 -0500 X-MC-Unique: UAYa3vhqOjiJkd_Nj1oPtA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E1C501842147; Wed, 4 Nov 2020 21:24:32 +0000 (UTC) Received: from kamzik.brq.redhat.com (unknown [10.40.192.66]) by smtp.corp.redhat.com (Postfix) with ESMTP id B89C35DA6B; Wed, 4 Nov 2020 21:24:28 +0000 (UTC) From: Andrew Jones To: kvm@vger.kernel.org Cc: pbonzini@redhat.com, borntraeger@de.ibm.com, frankja@linux.ibm.com, bgardon@google.com, peterx@redhat.com Subject: [PATCH 09/11] KVM: selftests: Make vm_create_default common Date: Wed, 4 Nov 2020 22:23:55 +0100 Message-Id: <20201104212357.171559-10-drjones@redhat.com> In-Reply-To: <20201104212357.171559-1-drjones@redhat.com> References: <20201104212357.171559-1-drjones@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The code is almost 100% the same anyway. Just move it to common and add a few arch-specific helpers. Signed-off-by: Andrew Jones --- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/include/s390x/processor.h | 4 +++ .../selftests/kvm/include/x86_64/processor.h | 4 +++ .../selftests/kvm/lib/aarch64/processor.c | 17 ---------- tools/testing/selftests/kvm/lib/kvm_util.c | 26 +++++++++++++++ .../selftests/kvm/lib/s390x/processor.c | 22 ------------- .../selftests/kvm/lib/x86_64/processor.c | 32 ------------------- 7 files changed, 37 insertions(+), 71 deletions(-) diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h index b7fa0c8551db..5e5849cdd115 100644 --- a/tools/testing/selftests/kvm/include/aarch64/processor.h +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h @@ -9,6 +9,9 @@ #include "kvm_util.h" +#define PTRS_PER_PAGE(page_size) ((page_size) / 8) +#define min_page_size() (4096) +#define min_page_shift() (12) #define ARM64_CORE_REG(x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \ KVM_REG_ARM_CORE | KVM_REG_ARM_CORE_REG(x)) diff --git a/tools/testing/selftests/kvm/include/s390x/processor.h b/tools/testing/selftests/kvm/include/s390x/processor.h index e0e96a5f608c..0952f53c538b 100644 --- a/tools/testing/selftests/kvm/include/s390x/processor.h +++ b/tools/testing/selftests/kvm/include/s390x/processor.h @@ -5,6 +5,10 @@ #ifndef SELFTEST_KVM_PROCESSOR_H #define SELFTEST_KVM_PROCESSOR_H +#define PTRS_PER_PAGE(page_size) ((page_size) / 8) +#define min_page_size() (4096) +#define min_page_shift() (12) + /* Bits in the region/segment table entry */ #define REGION_ENTRY_ORIGIN ~0xfffUL /* region/segment table origin */ #define REGION_ENTRY_PROTECT 0x200 /* region protection bit */ diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 82b7fe16a824..7f1fc597ed54 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -13,6 +13,10 @@ #include +#define PTRS_PER_PAGE(page_size) ((page_size) / 8) +#define min_page_size() (4096) +#define min_page_shift() (12) + #define X86_EFLAGS_FIXED (1u << 1) #define X86_CR4_VME (1ul << 0) diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c index 2afa6618b396..da90e5a17d3a 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c @@ -5,8 +5,6 @@ * Copyright (C) 2018, Red Hat, Inc. */ -#define _GNU_SOURCE /* for program_invocation_name */ - #include #include "kvm_util.h" @@ -219,21 +217,6 @@ void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent) } } -struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages, - void *guest_code) -{ - uint64_t ptrs_per_4k_pte = 512; - uint64_t extra_pg_pages = (extra_mem_pages / ptrs_per_4k_pte) * 2; - struct kvm_vm *vm; - - vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR); - - kvm_vm_elf_load(vm, program_invocation_name, 0, 0); - vm_vcpu_add_default(vm, vcpuid, guest_code); - - return vm; -} - void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *init) { struct kvm_vcpu_init default_init = { .target = -1, }; diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index b9943e935dc7..0d9d2242af2e 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -5,6 +5,7 @@ * Copyright (C) 2018, Google LLC. */ +#define _GNU_SOURCE /* for program_invocation_name */ #include "test_util.h" #include "kvm_util.h" #include "kvm_util_internal.h" @@ -243,6 +244,31 @@ struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm) return vm; } +struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages, + void *guest_code) +{ + /* The maximum page table size for a memory region will be when the + * smallest pages are used. Considering each page contains x page + * table descriptors, the total extra size for page tables (for extra + * N pages) will be: N/x+N/x^2+N/x^3+... which is definitely smaller + * than N/x*2. + */ + uint64_t extra_pg_pages = (extra_mem_pages / PTRS_PER_PAGE(min_page_size())) * 2; + struct kvm_vm *vm; + + vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR); + + kvm_vm_elf_load(vm, program_invocation_name, 0, 0); + +#ifdef __x86_64__ + vm_create_irqchip(vm); +#endif + + vm_vcpu_add_default(vm, vcpuid, guest_code); + + return vm; +} + /* * VM Restart * diff --git a/tools/testing/selftests/kvm/lib/s390x/processor.c b/tools/testing/selftests/kvm/lib/s390x/processor.c index a88c5d665725..1c28e0ee75f2 100644 --- a/tools/testing/selftests/kvm/lib/s390x/processor.c +++ b/tools/testing/selftests/kvm/lib/s390x/processor.c @@ -5,8 +5,6 @@ * Copyright (C) 2019, Red Hat, Inc. */ -#define _GNU_SOURCE /* for program_invocation_name */ - #include "processor.h" #include "kvm_util.h" #include "../kvm_util_internal.h" @@ -160,26 +158,6 @@ void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent) virt_dump_region(stream, vm, indent, vm->pgd); } -struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages, - void *guest_code) -{ - /* - * The additional amount of pages required for the page tables is: - * 1 * n / 256 + 4 * (n / 256) / 2048 + 4 * (n / 256) / 2048^2 + ... - * which is definitely smaller than (n / 256) * 2. - */ - uint64_t extra_pg_pages = extra_mem_pages / 256 * 2; - struct kvm_vm *vm; - - vm = vm_create(VM_MODE_DEFAULT, - DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR); - - kvm_vm_elf_load(vm, program_invocation_name, 0, 0); - vm_vcpu_add_default(vm, vcpuid, guest_code); - - return vm; -} - void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code) { size_t stack_size = DEFAULT_STACK_PGS * getpagesize(); diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index f6eb34eaa0d2..835909b6038e 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -5,8 +5,6 @@ * Copyright (C) 2018, Google LLC. */ -#define _GNU_SOURCE /* for program_invocation_name */ - #include "test_util.h" #include "kvm_util.h" #include "../kvm_util_internal.h" @@ -721,36 +719,6 @@ void vcpu_set_cpuid(struct kvm_vm *vm, } -struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages, - void *guest_code) -{ - struct kvm_vm *vm; - /* - * For x86 the maximum page table size for a memory region - * will be when only 4K pages are used. In that case the - * total extra size for page tables (for extra N pages) will - * be: N/512+N/512^2+N/512^3+... which is definitely smaller - * than N/512*2. - */ - uint64_t extra_pg_pages = extra_mem_pages / 512 * 2; - - /* Create VM */ - vm = vm_create(VM_MODE_DEFAULT, - DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, - O_RDWR); - - /* Setup guest code */ - kvm_vm_elf_load(vm, program_invocation_name, 0, 0); - - /* Setup IRQ Chip */ - vm_create_irqchip(vm); - - /* Add the first vCPU. */ - vm_vcpu_add_default(vm, vcpuid, guest_code); - - return vm; -} - /* * VCPU Get MSR * -- 2.26.2