From patchwork Mon Nov 30 02:35:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Fontana X-Patchwork-Id: 1407972 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CkqMY31p6z9sTc for ; Mon, 30 Nov 2020 13:44:57 +1100 (AEDT) Received: from localhost ([::1]:42038 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kjZBP-0004UA-Cj for incoming@patchwork.ozlabs.org; Sun, 29 Nov 2020 21:44:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:36134) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kjZ34-0001bN-JD for qemu-devel@nongnu.org; Sun, 29 Nov 2020 21:36:18 -0500 Received: from mx2.suse.de ([195.135.220.15]:57772) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kjZ2r-0004qe-W8 for qemu-devel@nongnu.org; Sun, 29 Nov 2020 21:36:18 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B3CC0ACE0; Mon, 30 Nov 2020 02:35:54 +0000 (UTC) From: Claudio Fontana To: Paolo Bonzini , Thomas Huth , Richard Henderson , Stefano Stabellini , Wenchao Wang , Roman Bolshakov , Sunil Muthuswamy , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [RFC v7 20/22] i386: split cpu accelerators from cpu.c, using AccelCPUClass Date: Mon, 30 Nov 2020 03:35:33 +0100 Message-Id: <20201130023535.16689-21-cfontana@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201130023535.16689-1-cfontana@suse.de> References: <20201130023535.16689-1-cfontana@suse.de> MIME-Version: 1.0 Received-SPF: pass client-ip=195.135.220.15; envelope-from=cfontana@suse.de; helo=mx2.suse.de X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: Laurent Vivier , Eduardo Habkost , Paul Durrant , Jason Wang , Marcelo Tosatti , qemu-devel@nongnu.org, Peter Xu , Dario Faggioli , Cameron Esfahani , haxm-team@intel.com, Claudio Fontana , Anthony Perard , Bruce Rogers , Olaf Hering , "Emilio G . Cota" , Colin Xu Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" i386 is the first user of AccelCPUClass, allowing to split cpu.c into: cpu.c cpuid and common x86 cpu functionality host-cpu.c host x86 cpu functions and "host" cpu type kvm/cpu.c KVM x86 AccelCPUClass hvf/cpu.c HVF x86 AccelCPUClass tcg/cpu.c TCG x86 AccelCPUClass Signed-off-by: Claudio Fontana --- MAINTAINERS | 2 +- hw/i386/pc_piix.c | 1 + target/i386/cpu.c | 386 ++++-------------------------------- target/i386/cpu.h | 20 +- target/i386/host-cpu.c | 198 ++++++++++++++++++ target/i386/host-cpu.h | 19 ++ target/i386/hvf/cpu.c | 65 ++++++ target/i386/hvf/meson.build | 1 + target/i386/kvm/cpu.c | 148 ++++++++++++++ target/i386/kvm/kvm-cpu.h | 41 ++++ target/i386/kvm/kvm.c | 3 +- target/i386/kvm/meson.build | 7 +- target/i386/meson.build | 8 +- target/i386/tcg-cpu.c | 71 ------- target/i386/tcg-cpu.h | 15 -- target/i386/tcg/cpu.c | 173 ++++++++++++++++ target/i386/tcg/meson.build | 3 +- 17 files changed, 711 insertions(+), 450 deletions(-) create mode 100644 target/i386/host-cpu.c create mode 100644 target/i386/host-cpu.h create mode 100644 target/i386/hvf/cpu.c create mode 100644 target/i386/kvm/cpu.c create mode 100644 target/i386/kvm/kvm-cpu.h delete mode 100644 target/i386/tcg-cpu.c delete mode 100644 target/i386/tcg-cpu.h create mode 100644 target/i386/tcg/cpu.c diff --git a/MAINTAINERS b/MAINTAINERS index f084d73f6b..4f3f1e8b18 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -337,7 +337,7 @@ M: Paolo Bonzini M: Richard Henderson M: Eduardo Habkost S: Maintained -F: target/i386/ +F: target/i386/tcg/ F: tests/tcg/i386/ F: tests/tcg/x86_64/ F: hw/i386/ diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 13d1628f13..d3f013f3a1 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -64,6 +64,7 @@ #include "hw/hyperv/vmbus-bridge.h" #include "hw/mem/nvdimm.h" #include "hw/i386/acpi-build.h" +#include "kvm/kvm-cpu.h" #define MAX_IDE_BUS 2 diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 3462d0143f..27fba3b003 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -22,37 +22,24 @@ #include "qemu/cutils.h" #include "qemu/bitops.h" #include "qemu/qemu-print.h" - #include "cpu.h" -#include "tcg-cpu.h" #include "helper-tcg.h" #include "exec/exec-all.h" #include "sysemu/kvm.h" #include "sysemu/reset.h" #include "sysemu/hvf.h" -#include "sysemu/cpus.h" +#include "hw/core/accel-cpu.h" #include "sysemu/xen.h" #include "kvm/kvm_i386.h" #include "sev_i386.h" - -#include "qemu/error-report.h" #include "qemu/module.h" -#include "qemu/option.h" -#include "qemu/config-file.h" -#include "qapi/error.h" #include "qapi/qapi-visit-machine.h" #include "qapi/qapi-visit-run-state.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qerror.h" -#include "qapi/visitor.h" #include "qom/qom-qobject.h" -#include "sysemu/arch_init.h" #include "qapi/qapi-commands-machine-target.h" - #include "standard-headers/asm-x86/kvm_para.h" - -#include "sysemu/sysemu.h" -#include "sysemu/tcg.h" #include "hw/qdev-properties.h" #include "hw/i386/topology.h" #ifndef CONFIG_USER_ONLY @@ -594,8 +581,8 @@ static CPUCacheInfo legacy_l3_cache = { #define INTEL_PT_CYCLE_BITMAP 0x1fff /* Support 0,2^(0~11) */ #define INTEL_PT_PSB_BITMAP (0x003f << 16) /* Support 2K,4K,8K,16K,32K,64K */ -static void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, - uint32_t vendor2, uint32_t vendor3) +void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, + uint32_t vendor2, uint32_t vendor3) { int i; for (i = 0; i < 4; i++) { @@ -1563,25 +1550,6 @@ void host_cpuid(uint32_t function, uint32_t count, *edx = vec[3]; } -void host_vendor_fms(char *vendor, int *family, int *model, int *stepping) -{ - uint32_t eax, ebx, ecx, edx; - - host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); - x86_cpu_vendor_words2str(vendor, ebx, edx, ecx); - - host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); - if (family) { - *family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); - } - if (model) { - *model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); - } - if (stepping) { - *stepping = eax & 0x0F; - } -} - /* CPU class name definitions: */ /* Return type name for a given CPU model name @@ -1606,10 +1574,6 @@ static char *x86_cpu_class_get_model_name(X86CPUClass *cc) strlen(class_name) - strlen(X86_CPU_TYPE_SUFFIX)); } -typedef struct PropValue { - const char *prop, *value; -} PropValue; - typedef struct X86CPUVersionDefinition { X86CPUVersion version; const char *alias; @@ -4106,31 +4070,6 @@ static X86CPUDefinition builtin_x86_defs[] = { }, }; -/* KVM-specific features that are automatically added/removed - * from all CPU models when KVM is enabled. - */ -static PropValue kvm_default_props[] = { - { "kvmclock", "on" }, - { "kvm-nopiodelay", "on" }, - { "kvm-asyncpf", "on" }, - { "kvm-steal-time", "on" }, - { "kvm-pv-eoi", "on" }, - { "kvmclock-stable-bit", "on" }, - { "x2apic", "on" }, - { "acpi", "off" }, - { "monitor", "off" }, - { "svm", "off" }, - { NULL, NULL }, -}; - -/* TCG-specific defaults that override all CPU models when using TCG - */ -static PropValue tcg_default_props[] = { - { "vme", "off" }, - { NULL, NULL }, -}; - - /* * We resolve CPU model aliases using -v1 when using "-machine * none", but this is just for compatibility while libvirt isn't @@ -4172,61 +4111,6 @@ static X86CPUVersion x86_cpu_model_resolve_version(const X86CPUModel *model) return v; } -void x86_cpu_change_kvm_default(const char *prop, const char *value) -{ - PropValue *pv; - for (pv = kvm_default_props; pv->prop; pv++) { - if (!strcmp(pv->prop, prop)) { - pv->value = value; - break; - } - } - - /* It is valid to call this function only for properties that - * are already present in the kvm_default_props table. - */ - assert(pv->prop); -} - -static bool lmce_supported(void) -{ - uint64_t mce_cap = 0; - -#ifdef CONFIG_KVM - if (kvm_ioctl(kvm_state, KVM_X86_GET_MCE_CAP_SUPPORTED, &mce_cap) < 0) { - return false; - } -#endif - - return !!(mce_cap & MCG_LMCE_P); -} - -#define CPUID_MODEL_ID_SZ 48 - -/** - * cpu_x86_fill_model_id: - * Get CPUID model ID string from host CPU. - * - * @str should have at least CPUID_MODEL_ID_SZ bytes - * - * The function does NOT add a null terminator to the string - * automatically. - */ -static int cpu_x86_fill_model_id(char *str) -{ - uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; - int i; - - for (i = 0; i < 3; i++) { - host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx); - memcpy(str + i * 16 + 0, &eax, 4); - memcpy(str + i * 16 + 4, &ebx, 4); - memcpy(str + i * 16 + 8, &ecx, 4); - memcpy(str + i * 16 + 12, &edx, 4); - } - return 0; -} - static Property max_x86_cpu_properties[] = { DEFINE_PROP_BOOL("migratable", X86CPU, migratable, true), DEFINE_PROP_BOOL("host-cache-info", X86CPU, cache_info_passthrough, false), @@ -4249,61 +4133,25 @@ static void max_x86_cpu_class_init(ObjectClass *oc, void *data) static void max_x86_cpu_initfn(Object *obj) { X86CPU *cpu = X86_CPU(obj); - CPUX86State *env = &cpu->env; - KVMState *s = kvm_state; /* We can't fill the features array here because we don't know yet if * "migratable" is true or false. */ cpu->max_features = true; - - if (accel_uses_host_cpuid()) { - char vendor[CPUID_VENDOR_SZ + 1] = { 0 }; - char model_id[CPUID_MODEL_ID_SZ + 1] = { 0 }; - int family, model, stepping; - - host_vendor_fms(vendor, &family, &model, &stepping); - cpu_x86_fill_model_id(model_id); - - object_property_set_str(OBJECT(cpu), "vendor", vendor, &error_abort); - object_property_set_int(OBJECT(cpu), "family", family, &error_abort); - object_property_set_int(OBJECT(cpu), "model", model, &error_abort); - object_property_set_int(OBJECT(cpu), "stepping", stepping, - &error_abort); - object_property_set_str(OBJECT(cpu), "model-id", model_id, - &error_abort); - - if (kvm_enabled()) { - env->cpuid_min_level = - kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX); - env->cpuid_min_xlevel = - kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX); - env->cpuid_min_xlevel2 = - kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX); - } else { - env->cpuid_min_level = - hvf_get_supported_cpuid(0x0, 0, R_EAX); - env->cpuid_min_xlevel = - hvf_get_supported_cpuid(0x80000000, 0, R_EAX); - env->cpuid_min_xlevel2 = - hvf_get_supported_cpuid(0xC0000000, 0, R_EAX); - } - - if (lmce_supported()) { - object_property_set_bool(OBJECT(cpu), "lmce", true, &error_abort); - } - } else { - object_property_set_str(OBJECT(cpu), "vendor", CPUID_VENDOR_AMD, - &error_abort); - object_property_set_int(OBJECT(cpu), "family", 6, &error_abort); - object_property_set_int(OBJECT(cpu), "model", 6, &error_abort); - object_property_set_int(OBJECT(cpu), "stepping", 3, &error_abort); - object_property_set_str(OBJECT(cpu), "model-id", - "QEMU TCG CPU version " QEMU_HW_VERSION, - &error_abort); - } - object_property_set_bool(OBJECT(cpu), "pmu", true, &error_abort); + + /* + * these defaults are used for TCG and all other accelerators + * besides KVM and HVF, which overwrite these values + */ + object_property_set_str(OBJECT(cpu), "vendor", CPUID_VENDOR_AMD, + &error_abort); + object_property_set_int(OBJECT(cpu), "family", 6, &error_abort); + object_property_set_int(OBJECT(cpu), "model", 6, &error_abort); + object_property_set_int(OBJECT(cpu), "stepping", 3, &error_abort); + object_property_set_str(OBJECT(cpu), "model-id", + "QEMU TCG CPU version " QEMU_HW_VERSION, + &error_abort); } static const TypeInfo max_x86_cpu_type_info = { @@ -4313,31 +4161,6 @@ static const TypeInfo max_x86_cpu_type_info = { .class_init = max_x86_cpu_class_init, }; -#if defined(CONFIG_KVM) || defined(CONFIG_HVF) -static void host_x86_cpu_class_init(ObjectClass *oc, void *data) -{ - X86CPUClass *xcc = X86_CPU_CLASS(oc); - - xcc->host_cpuid_required = true; - xcc->ordering = 8; - -#if defined(CONFIG_KVM) - xcc->model_description = - "KVM processor with all supported host features "; -#elif defined(CONFIG_HVF) - xcc->model_description = - "HVF processor with all supported host features "; -#endif -} - -static const TypeInfo host_x86_cpu_type_info = { - .name = X86_CPU_TYPE_NAME("host"), - .parent = X86_CPU_TYPE_NAME("max"), - .class_init = host_x86_cpu_class_init, -}; - -#endif - static char *feature_word_description(FeatureWordInfo *f, uint32_t bit) { assert(f->type == CPUID_FEATURE_WORD || f->type == MSR_FEATURE_WORD); @@ -5063,7 +4886,7 @@ static uint64_t x86_cpu_get_supported_feature_word(FeatureWord w, return r; } -static void x86_cpu_apply_props(X86CPU *cpu, PropValue *props) +void x86_cpu_apply_props(X86CPU *cpu, PropValue *props) { PropValue *pv; for (pv = props; pv->prop; pv++) { @@ -5110,8 +4933,6 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model) { X86CPUDefinition *def = model->cpudef; CPUX86State *env = &cpu->env; - const char *vendor; - char host_vendor[CPUID_VENDOR_SZ + 1]; FeatureWord w; /*NOTE: any property set by this function should be returned by @@ -5138,18 +4959,6 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model) /* legacy-cache defaults to 'off' if CPU model provides cache info */ cpu->legacy_cache = !def->cache_info; - /* Special cases not set in the X86CPUDefinition structs: */ - /* TODO: in-kernel irqchip for hvf */ - if (kvm_enabled()) { - if (!kvm_irqchip_in_kernel()) { - x86_cpu_change_kvm_default("x2apic", "off"); - } - - x86_cpu_apply_props(cpu, kvm_default_props); - } else if (tcg_enabled()) { - x86_cpu_apply_props(cpu, tcg_default_props); - } - env->features[FEAT_1_ECX] |= CPUID_EXT_HYPERVISOR; /* sysenter isn't supported in compatibility mode on AMD, @@ -5159,15 +4968,12 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model) * KVM's sysenter/syscall emulation in compatibility mode and * when doing cross vendor migration */ - vendor = def->vendor; - if (accel_uses_host_cpuid()) { - uint32_t ebx = 0, ecx = 0, edx = 0; - host_cpuid(0, 0, NULL, &ebx, &ecx, &edx); - x86_cpu_vendor_words2str(host_vendor, ebx, edx, ecx); - vendor = host_vendor; - } - object_property_set_str(OBJECT(cpu), "vendor", vendor, &error_abort); + /* + * vendor property is set here but then overloaded with the + * host cpu vendor for KVM and HVF. + */ + object_property_set_str(OBJECT(cpu), "vendor", def->vendor, &error_abort); x86_cpu_apply_version_props(cpu, model); @@ -6192,53 +5998,12 @@ static void x86_cpu_apic_realize(X86CPU *cpu, Error **errp) apic_mmio_map_once = true; } } - -static void x86_cpu_machine_done(Notifier *n, void *unused) -{ - X86CPU *cpu = container_of(n, X86CPU, machine_done); - MemoryRegion *smram = - (MemoryRegion *) object_resolve_path("/machine/smram", NULL); - - if (smram) { - cpu->smram = g_new(MemoryRegion, 1); - memory_region_init_alias(cpu->smram, OBJECT(cpu), "smram", - smram, 0, 4 * GiB); - memory_region_set_enabled(cpu->smram, true); - memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->smram, 1); - } -} #else static void x86_cpu_apic_realize(X86CPU *cpu, Error **errp) { } #endif -/* Note: Only safe for use on x86(-64) hosts */ -static uint32_t x86_host_phys_bits(void) -{ - uint32_t eax; - uint32_t host_phys_bits; - - host_cpuid(0x80000000, 0, &eax, NULL, NULL, NULL); - if (eax >= 0x80000008) { - host_cpuid(0x80000008, 0, &eax, NULL, NULL, NULL); - /* Note: According to AMD doc 25481 rev 2.34 they have a field - * at 23:16 that can specify a maximum physical address bits for - * the guest that can override this value; but I've not seen - * anything with that set. - */ - host_phys_bits = eax & 0xff; - } else { - /* It's an odd 64 bit machine that doesn't have the leaf for - * physical address bits; fall back to 36 that's most older - * Intel. - */ - host_phys_bits = 36; - } - - return host_phys_bits; -} - static void x86_cpu_adjust_level(X86CPU *cpu, uint32_t *min, uint32_t value) { if (*min < value) { @@ -6515,33 +6280,22 @@ static void x86_cpu_filter_features(X86CPU *cpu, bool verbose) static void x86_cpu_realizefn(DeviceState *dev, Error **errp) { CPUState *cs = CPU(dev); + CPUClass *cc = CPU_GET_CLASS(cs); X86CPU *cpu = X86_CPU(dev); X86CPUClass *xcc = X86_CPU_GET_CLASS(dev); CPUX86State *env = &cpu->env; Error *local_err = NULL; static bool ht_warned; - if (xcc->host_cpuid_required) { - if (!accel_uses_host_cpuid()) { - g_autofree char *name = x86_cpu_class_get_model_name(xcc); - error_setg(&local_err, "CPU model '%s' requires KVM", name); - goto out; - } + /* The accelerator realizefn needs to be called first. */ + if (cc->accel_cpu_interface) { + cc->accel_cpu_interface->cpu_realizefn(cs, errp); } - if (cpu->max_features && accel_uses_host_cpuid()) { - if (enable_cpu_pm) { - host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx, - &cpu->mwait.ecx, &cpu->mwait.edx); - env->features[FEAT_1_ECX] |= CPUID_EXT_MONITOR; - if (kvm_enabled() && kvm_has_waitpkg()) { - env->features[FEAT_7_0_ECX] |= CPUID_7_0_ECX_WAITPKG; - } - } - if (kvm_enabled() && cpu->ucode_rev == 0) { - cpu->ucode_rev = kvm_arch_get_supported_msr_feature(kvm_state, - MSR_IA32_UCODE_REV); - } + if (xcc->host_cpuid_required && !accel_uses_host_cpuid()) { + g_autofree char *name = x86_cpu_class_get_model_name(xcc); + error_setg(&local_err, "CPU model '%s' requires KVM or HVF", name); + goto out; } if (cpu->ucode_rev == 0) { @@ -6593,39 +6347,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp) * consumer AMD devices but nothing else. */ if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) { - if (accel_uses_host_cpuid()) { - uint32_t host_phys_bits = x86_host_phys_bits(); - static bool warned; - - /* Print a warning if the user set it to a value that's not the - * host value. - */ - if (cpu->phys_bits != host_phys_bits && cpu->phys_bits != 0 && - !warned) { - warn_report("Host physical bits (%u)" - " does not match phys-bits property (%u)", - host_phys_bits, cpu->phys_bits); - warned = true; - } - - if (cpu->host_phys_bits) { - /* The user asked for us to use the host physical bits */ - cpu->phys_bits = host_phys_bits; - if (cpu->host_phys_bits_limit && - cpu->phys_bits > cpu->host_phys_bits_limit) { - cpu->phys_bits = cpu->host_phys_bits_limit; - } - } - - if (cpu->phys_bits && - (cpu->phys_bits > TARGET_PHYS_ADDR_SPACE_BITS || - cpu->phys_bits < 32)) { - error_setg(errp, "phys-bits should be between 32 and %u " - " (but is %u)", - TARGET_PHYS_ADDR_SPACE_BITS, cpu->phys_bits); - return; - } - } else { + if (!accel_uses_host_cpuid()) { if (cpu->phys_bits && cpu->phys_bits != TCG_PHYS_ADDR_BITS) { error_setg(errp, "TCG only supports phys-bits=%u", TCG_PHYS_ADDR_BITS); @@ -6633,8 +6355,8 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp) } } /* 0 means it was not explicitly set by the user (or by machine - * compat_props or by the host code above). In this case, the default - * is the value used by TCG (40). + * compat_props or by the host code in host-cpu.c). + * In this case, the default is the value used by TCG (40). */ if (cpu->phys_bits == 0) { cpu->phys_bits = TCG_PHYS_ADDR_BITS; @@ -6704,33 +6426,6 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp) mce_init(cpu); -#ifndef CONFIG_USER_ONLY - if (tcg_enabled()) { - cpu->cpu_as_mem = g_new(MemoryRegion, 1); - cpu->cpu_as_root = g_new(MemoryRegion, 1); - - /* Outer container... */ - memory_region_init(cpu->cpu_as_root, OBJECT(cpu), "memory", ~0ull); - memory_region_set_enabled(cpu->cpu_as_root, true); - - /* ... with two regions inside: normal system memory with low - * priority, and... - */ - memory_region_init_alias(cpu->cpu_as_mem, OBJECT(cpu), "memory", - get_system_memory(), 0, ~0ull); - memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->cpu_as_mem, 0); - memory_region_set_enabled(cpu->cpu_as_mem, true); - - cs->num_ases = 2; - cpu_address_space_init(cs, 0, "cpu-memory", cs->memory); - cpu_address_space_init(cs, 1, "cpu-smm", cpu->cpu_as_root); - - /* ... SMRAM with higher priority, linked from /machine/smram. */ - cpu->machine_done.notify = x86_cpu_machine_done; - qemu_add_machine_init_done_notifier(&cpu->machine_done); - } -#endif - qemu_init_vcpu(cs); /* @@ -6936,6 +6631,8 @@ static void x86_cpu_initfn(Object *obj) { X86CPU *cpu = X86_CPU(obj); X86CPUClass *xcc = X86_CPU_GET_CLASS(obj); + CPUClass *cc = CPU_CLASS(xcc); + CPUX86State *env = &cpu->env; FeatureWord w; @@ -6992,6 +6689,11 @@ static void x86_cpu_initfn(Object *obj) if (xcc->model) { x86_cpu_load_model(cpu, xcc->model); } + + /* if required, do the accelerator-specific cpu initialization */ + if (cc->accel_cpu_interface) { + cc->accel_cpu_interface->cpu_instance_init(CPU(obj)); + } } static int64_t x86_cpu_get_arch_id(CPUState *cs) @@ -7248,11 +6950,6 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data) cc->class_by_name = x86_cpu_class_by_name; cc->parse_features = x86_cpu_parse_featurestr; cc->has_work = x86_cpu_has_work; - -#ifdef CONFIG_TCG - tcg_cpu_common_class_init(cc); -#endif /* CONFIG_TCG */ - cc->dump_state = x86_cpu_dump_state; cc->set_pc = x86_cpu_set_pc; cc->gdb_read_register = x86_cpu_gdb_read_register; @@ -7357,9 +7054,6 @@ static void x86_cpu_register_types(void) } type_register_static(&max_x86_cpu_type_info); type_register_static(&x86_base_cpu_type_info); -#if defined(CONFIG_KVM) || defined(CONFIG_HVF) - type_register_static(&host_x86_cpu_type_info); -#endif } type_init(x86_cpu_register_types) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index a0d64613dc..b3e39fc631 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1905,13 +1905,20 @@ int cpu_x86_signal_handler(int host_signum, void *pinfo, void *puc); /* cpu.c */ +void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, + uint32_t vendor2, uint32_t vendor3); +typedef struct PropValue { + const char *prop, *value; +} PropValue; +void x86_cpu_apply_props(X86CPU *cpu, PropValue *props); + +/* cpu.c other functions (cpuid) */ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx); void cpu_clear_apic_feature(CPUX86State *env); void host_cpuid(uint32_t function, uint32_t count, uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx); -void host_vendor_fms(char *vendor, int *family, int *model, int *stepping); /* helper.c */ void x86_cpu_set_a20(X86CPU *cpu, int a20_state); @@ -2111,17 +2118,6 @@ void cpu_report_tpr_access(CPUX86State *env, TPRAccess access); void apic_handle_tpr_access_report(DeviceState *d, target_ulong ip, TPRAccess access); - -/* Change the value of a KVM-specific default - * - * If value is NULL, no default will be set and the original - * value from the CPU model table will be kept. - * - * It is valid to call this function only for properties that - * are already present in the kvm_default_props table. - */ -void x86_cpu_change_kvm_default(const char *prop, const char *value); - /* Special values for X86CPUVersion: */ /* Resolve to latest CPU version */ diff --git a/target/i386/host-cpu.c b/target/i386/host-cpu.c new file mode 100644 index 0000000000..3ce2bc9a84 --- /dev/null +++ b/target/i386/host-cpu.c @@ -0,0 +1,198 @@ +/* + * x86 host CPU functions, and "host" cpu type initialization + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "host-cpu.h" +#include "qapi/error.h" +#include "sysemu/sysemu.h" + +/* Note: Only safe for use on x86(-64) hosts */ +static uint32_t host_cpu_phys_bits(void) +{ + uint32_t eax; + uint32_t host_phys_bits; + + host_cpuid(0x80000000, 0, &eax, NULL, NULL, NULL); + if (eax >= 0x80000008) { + host_cpuid(0x80000008, 0, &eax, NULL, NULL, NULL); + /* + * Note: According to AMD doc 25481 rev 2.34 they have a field + * at 23:16 that can specify a maximum physical address bits for + * the guest that can override this value; but I've not seen + * anything with that set. + */ + host_phys_bits = eax & 0xff; + } else { + /* + * It's an odd 64 bit machine that doesn't have the leaf for + * physical address bits; fall back to 36 that's most older + * Intel. + */ + host_phys_bits = 36; + } + + return host_phys_bits; +} + +static void host_cpu_enable_cpu_pm(X86CPU *cpu) +{ + CPUX86State *env = &cpu->env; + + host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx, + &cpu->mwait.ecx, &cpu->mwait.edx); + env->features[FEAT_1_ECX] |= CPUID_EXT_MONITOR; +} + +static uint32_t host_cpu_adjust_phys_bits(X86CPU *cpu, Error **errp) +{ + uint32_t host_phys_bits = host_cpu_phys_bits(); + uint32_t phys_bits = cpu->phys_bits; + static bool warned; + + /* + * Print a warning if the user set it to a value that's not the + * host value. + */ + if (phys_bits != host_phys_bits && phys_bits != 0 && + !warned) { + warn_report("Host physical bits (%u)" + " does not match phys-bits property (%u)", + host_phys_bits, phys_bits); + warned = true; + } + + if (cpu->host_phys_bits) { + /* The user asked for us to use the host physical bits */ + phys_bits = host_phys_bits; + if (cpu->host_phys_bits_limit && + phys_bits > cpu->host_phys_bits_limit) { + phys_bits = cpu->host_phys_bits_limit; + } + } + + if (phys_bits && + (phys_bits > TARGET_PHYS_ADDR_SPACE_BITS || + phys_bits < 32)) { + error_setg(errp, "phys-bits should be between 32 and %u " + " (but is %u)", + TARGET_PHYS_ADDR_SPACE_BITS, phys_bits); + } + + return phys_bits; +} + +void host_cpu_realizefn(CPUState *cs, Error **errp) +{ + X86CPU *cpu = X86_CPU(cs); + CPUX86State *env = &cpu->env; + + if (cpu->max_features && enable_cpu_pm) { + host_cpu_enable_cpu_pm(cpu); + } + if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) { + cpu->phys_bits = host_cpu_adjust_phys_bits(cpu, errp); + } +} + +#define CPUID_MODEL_ID_SZ 48 +/** + * cpu_x86_fill_model_id: + * Get CPUID model ID string from host CPU. + * + * @str should have at least CPUID_MODEL_ID_SZ bytes + * + * The function does NOT add a null terminator to the string + * automatically. + */ +static int host_cpu_fill_model_id(char *str) +{ + uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; + int i; + + for (i = 0; i < 3; i++) { + host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx); + memcpy(str + i * 16 + 0, &eax, 4); + memcpy(str + i * 16 + 4, &ebx, 4); + memcpy(str + i * 16 + 8, &ecx, 4); + memcpy(str + i * 16 + 12, &edx, 4); + } + return 0; +} + +void host_cpu_vendor_fms(char *vendor, int *family, int *model, int *stepping) +{ + uint32_t eax, ebx, ecx, edx; + + host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); + x86_cpu_vendor_words2str(vendor, ebx, edx, ecx); + + host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); + if (family) { + *family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); + } + if (model) { + *model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); + } + if (stepping) { + *stepping = eax & 0x0F; + } +} + +void host_cpu_instance_init(X86CPU *cpu) +{ + uint32_t ebx = 0, ecx = 0, edx = 0; + char vendor[CPUID_VENDOR_SZ + 1]; + + host_cpuid(0, 0, NULL, &ebx, &ecx, &edx); + x86_cpu_vendor_words2str(vendor, ebx, edx, ecx); + + object_property_set_str(OBJECT(cpu), "vendor", vendor, &error_abort); +} + +void host_cpu_max_instance_init(X86CPU *cpu) +{ + char vendor[CPUID_VENDOR_SZ + 1] = { 0 }; + char model_id[CPUID_MODEL_ID_SZ + 1] = { 0 }; + int family, model, stepping; + + host_cpu_vendor_fms(vendor, &family, &model, &stepping); + host_cpu_fill_model_id(model_id); + + object_property_set_str(OBJECT(cpu), "vendor", vendor, &error_abort); + object_property_set_int(OBJECT(cpu), "family", family, &error_abort); + object_property_set_int(OBJECT(cpu), "model", model, &error_abort); + object_property_set_int(OBJECT(cpu), "stepping", stepping, + &error_abort); + object_property_set_str(OBJECT(cpu), "model-id", model_id, + &error_abort); +} + +static void host_cpu_class_init(ObjectClass *oc, void *data) +{ + X86CPUClass *xcc = X86_CPU_CLASS(oc); + + xcc->host_cpuid_required = true; + xcc->ordering = 8; + xcc->model_description = + g_strdup_printf("processor with all supported host features "); +} + +static const TypeInfo host_cpu_type_info = { + .name = X86_CPU_TYPE_NAME("host"), + .parent = X86_CPU_TYPE_NAME("max"), + .class_init = host_cpu_class_init, +}; + +static void host_cpu_type_init(void) +{ + type_register_static(&host_cpu_type_info); +} + +type_init(host_cpu_type_init); diff --git a/target/i386/host-cpu.h b/target/i386/host-cpu.h new file mode 100644 index 0000000000..d1f2644422 --- /dev/null +++ b/target/i386/host-cpu.h @@ -0,0 +1,19 @@ +/* + * x86 host CPU type initialization and host CPU functions + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef HOST_CPU_H +#define HOST_CPU_H + +void host_cpu_instance_init(X86CPU *cpu); +void host_cpu_max_instance_init(X86CPU *cpu); +void host_cpu_realizefn(CPUState *cs, Error **errp); + +void host_cpu_vendor_fms(char *vendor, int *family, int *model, int *stepping); + +#endif /* HOST_CPU_H */ diff --git a/target/i386/hvf/cpu.c b/target/i386/hvf/cpu.c new file mode 100644 index 0000000000..d6579571f1 --- /dev/null +++ b/target/i386/hvf/cpu.c @@ -0,0 +1,65 @@ +/* + * x86 HVF CPU type initialization + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "host-cpu.h" +#include "qapi/error.h" +#include "sysemu/sysemu.h" +#include "hw/boards.h" +#include "sysemu/hvf.h" +#include "hw/core/accel-cpu.h" + +static void hvf_cpu_max_instance_init(X86CPU *cpu) +{ + CPUX86State *env = &cpu->env; + + host_cpu_max_instance_init(cpu); + + env->cpuid_min_level = + hvf_get_supported_cpuid(0x0, 0, R_EAX); + env->cpuid_min_xlevel = + hvf_get_supported_cpuid(0x80000000, 0, R_EAX); + env->cpuid_min_xlevel2 = + hvf_get_supported_cpuid(0xC0000000, 0, R_EAX); +} + +static void hvf_cpu_instance_init(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + + host_cpu_instance_init(cpu); + + /* Special cases not set in the X86CPUDefinition structs: */ + /* TODO: in-kernel irqchip for hvf */ + + if (cpu->max_features) { + hvf_cpu_max_instance_init(cpu); + } +} + +static void hvf_cpu_accel_class_init(ObjectClass *oc, void *data) +{ + AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); + + acc->cpu_realizefn = host_cpu_realizefn; + acc->cpu_instance_init = hvf_cpu_instance_init; +}; +static const TypeInfo hvf_cpu_accel_type_info = { + .name = ACCEL_CPU_NAME("hvf"), + + .parent = TYPE_ACCEL_CPU, + .class_init = hvf_cpu_accel_class_init, + .abstract = true, +}; +static void hvf_cpu_accel_register_types(void) +{ + type_register_static(&hvf_cpu_accel_type_info); +} +type_init(hvf_cpu_accel_register_types); diff --git a/target/i386/hvf/meson.build b/target/i386/hvf/meson.build index 409c9a3f14..a7fba5724c 100644 --- a/target/i386/hvf/meson.build +++ b/target/i386/hvf/meson.build @@ -10,4 +10,5 @@ i386_softmmu_ss.add(when: [hvf, 'CONFIG_HVF'], if_true: files( 'x86_mmu.c', 'x86_task.c', 'x86hvf.c', + 'cpu.c', )) diff --git a/target/i386/kvm/cpu.c b/target/i386/kvm/cpu.c new file mode 100644 index 0000000000..adc5120cf6 --- /dev/null +++ b/target/i386/kvm/cpu.c @@ -0,0 +1,148 @@ +/* + * x86 KVM CPU type initialization + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "host-cpu.h" +#include "kvm-cpu.h" +#include "qapi/error.h" +#include "sysemu/sysemu.h" +#include "hw/boards.h" + +#include "kvm_i386.h" +#include "hw/core/accel-cpu.h" + +static void kvm_cpu_realizefn(CPUState *cs, Error **errp) +{ + X86CPU *cpu = X86_CPU(cs); + CPUX86State *env = &cpu->env; + + /* + * The realize order is important, since x86_cpu_realize() checks if + * nothing else has been set by the user (or by accelerators) in + * cpu->ucode_rev and cpu->phys_bits. + * + * realize order: + * kvm_cpu -> host_cpu -> x86_cpu + */ + if (cpu->max_features) { + if (enable_cpu_pm && kvm_has_waitpkg()) { + env->features[FEAT_7_0_ECX] |= CPUID_7_0_ECX_WAITPKG; + } + if (cpu->ucode_rev == 0) { + cpu->ucode_rev = + kvm_arch_get_supported_msr_feature(kvm_state, + MSR_IA32_UCODE_REV); + } + } + host_cpu_realizefn(cs, errp); +} + +/* + * KVM-specific features that are automatically added/removed + * from all CPU models when KVM is enabled. + */ +static PropValue kvm_default_props[] = { + { "kvmclock", "on" }, + { "kvm-nopiodelay", "on" }, + { "kvm-asyncpf", "on" }, + { "kvm-steal-time", "on" }, + { "kvm-pv-eoi", "on" }, + { "kvmclock-stable-bit", "on" }, + { "x2apic", "on" }, + { "acpi", "off" }, + { "monitor", "off" }, + { "svm", "off" }, + { NULL, NULL }, +}; + +void x86_cpu_change_kvm_default(const char *prop, const char *value) +{ + PropValue *pv; + for (pv = kvm_default_props; pv->prop; pv++) { + if (!strcmp(pv->prop, prop)) { + pv->value = value; + break; + } + } + + /* + * It is valid to call this function only for properties that + * are already present in the kvm_default_props table. + */ + assert(pv->prop); +} + +static bool lmce_supported(void) +{ + uint64_t mce_cap = 0; + + if (kvm_ioctl(kvm_state, KVM_X86_GET_MCE_CAP_SUPPORTED, &mce_cap) < 0) { + return false; + } + return !!(mce_cap & MCG_LMCE_P); +} + +static void kvm_cpu_max_instance_init(X86CPU *cpu) +{ + CPUX86State *env = &cpu->env; + KVMState *s = kvm_state; + + host_cpu_max_instance_init(cpu); + + if (lmce_supported()) { + object_property_set_bool(OBJECT(cpu), "lmce", true, &error_abort); + } + + env->cpuid_min_level = + kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX); + env->cpuid_min_xlevel = + kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX); + env->cpuid_min_xlevel2 = + kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX); +} + +static void kvm_cpu_instance_init(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + + host_cpu_instance_init(cpu); + + if (!kvm_irqchip_in_kernel()) { + x86_cpu_change_kvm_default("x2apic", "off"); + } + + /* Special cases not set in the X86CPUDefinition structs: */ + + x86_cpu_apply_props(cpu, kvm_default_props); + + if (cpu->max_features) { + kvm_cpu_max_instance_init(cpu); + } +} + +static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data) +{ + AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); + + acc->cpu_realizefn = kvm_cpu_realizefn; + acc->cpu_instance_init = kvm_cpu_instance_init; +} +static const TypeInfo kvm_cpu_accel_type_info = { + .name = ACCEL_CPU_NAME("kvm"), + + .parent = TYPE_ACCEL_CPU, + .class_init = kvm_cpu_accel_class_init, + .abstract = true, +}; +static void kvm_cpu_accel_register_types(void) +{ + type_register_static(&kvm_cpu_accel_type_info); +} +type_init(kvm_cpu_accel_register_types); diff --git a/target/i386/kvm/kvm-cpu.h b/target/i386/kvm/kvm-cpu.h new file mode 100644 index 0000000000..e858ca21e5 --- /dev/null +++ b/target/i386/kvm/kvm-cpu.h @@ -0,0 +1,41 @@ +/* + * i386 KVM CPU type and functions + * + * Copyright (c) 2003 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef KVM_CPU_H +#define KVM_CPU_H + +#ifdef CONFIG_KVM +/* + * Change the value of a KVM-specific default + * + * If value is NULL, no default will be set and the original + * value from the CPU model table will be kept. + * + * It is valid to call this function only for properties that + * are already present in the kvm_default_props table. + */ +void x86_cpu_change_kvm_default(const char *prop, const char *value); + +#else /* !CONFIG_KVM */ + +#define x86_cpu_change_kvm_default(a, b) + +#endif /* CONFIG_KVM */ + +#endif /* KVM_CPU_H */ diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index a2934dda02..35c86fdba6 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -22,6 +22,7 @@ #include "standard-headers/asm-x86/kvm_para.h" #include "cpu.h" +#include "host-cpu.h" #include "sysemu/sysemu.h" #include "sysemu/hw_accel.h" #include "sysemu/kvm_int.h" @@ -285,7 +286,7 @@ static bool host_tsx_broken(void) int family, model, stepping;\ char vendor[CPUID_VENDOR_SZ + 1]; - host_vendor_fms(vendor, &family, &model, &stepping); + host_cpu_vendor_fms(vendor, &family, &model, &stepping); /* Check if we are running on a Haswell host known to have broken TSX */ return !strcmp(vendor, CPUID_VENDOR_INTEL) && diff --git a/target/i386/kvm/meson.build b/target/i386/kvm/meson.build index 1d66559187..0bc3724eb3 100644 --- a/target/i386/kvm/meson.build +++ b/target/i386/kvm/meson.build @@ -1,3 +1,8 @@ i386_ss.add(when: 'CONFIG_KVM', if_false: files('kvm-stub.c')) -i386_softmmu_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c')) + +i386_softmmu_ss.add(when: 'CONFIG_KVM', if_true: files( + 'kvm.c', + 'cpu.c', +)) + i386_softmmu_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'), if_false: files('hyperv-stub.c')) diff --git a/target/i386/meson.build b/target/i386/meson.build index 9c20208e5a..4e6e915e7f 100644 --- a/target/i386/meson.build +++ b/target/i386/meson.build @@ -6,8 +6,12 @@ i386_ss.add(files( 'xsave_helper.c', 'cpu-dump.c', )) -i386_ss.add(when: 'CONFIG_TCG', if_true: files('tcg-cpu.c')) -i386_ss.add(when: 'CONFIG_SEV', if_true: files('sev.c'), if_false: files('sev-stub.c')) + +i386_ss.add(when: 'CONFIG_SEV', if_true: files('host-cpu.c', 'sev.c'), if_false: files('sev-stub.c')) + +# x86 cpu type +i386_ss.add(when: 'CONFIG_KVM', if_true: files('host-cpu.c')) +i386_ss.add(when: 'CONFIG_HVF', if_true: files('host-cpu.c')) i386_softmmu_ss = ss.source_set() i386_softmmu_ss.add(files( diff --git a/target/i386/tcg-cpu.c b/target/i386/tcg-cpu.c deleted file mode 100644 index 38ed8bf6d3..0000000000 --- a/target/i386/tcg-cpu.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * i386 TCG cpu class initialization - * - * Copyright (c) 2003 Fabrice Bellard - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see . - */ - -#include "qemu/osdep.h" -#include "cpu.h" -#include "tcg-cpu.h" -#include "exec/exec-all.h" -#include "sysemu/runstate.h" -#include "helper-tcg.h" - -#if !defined(CONFIG_USER_ONLY) -#include "hw/i386/apic.h" -#endif - -/* Frob eflags into and out of the CPU temporary format. */ - -static void x86_cpu_exec_enter(CPUState *cs) -{ - X86CPU *cpu = X86_CPU(cs); - CPUX86State *env = &cpu->env; - - CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); - env->df = 1 - (2 * ((env->eflags >> 10) & 1)); - CC_OP = CC_OP_EFLAGS; - env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); -} - -static void x86_cpu_exec_exit(CPUState *cs) -{ - X86CPU *cpu = X86_CPU(cs); - CPUX86State *env = &cpu->env; - - env->eflags = cpu_compute_eflags(env); -} - -static void x86_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb) -{ - X86CPU *cpu = X86_CPU(cs); - - cpu->env.eip = tb->pc - tb->cs_base; -} - -void tcg_cpu_common_class_init(CPUClass *cc) -{ - cc->do_interrupt = x86_cpu_do_interrupt; - cc->tcg_ops.cpu_exec_interrupt = x86_cpu_exec_interrupt; - cc->tcg_ops.synchronize_from_tb = x86_cpu_synchronize_from_tb; - cc->tcg_ops.cpu_exec_enter = x86_cpu_exec_enter; - cc->tcg_ops.cpu_exec_exit = x86_cpu_exec_exit; - cc->tcg_ops.initialize = tcg_x86_init; - cc->tcg_ops.tlb_fill = x86_cpu_tlb_fill; -#ifndef CONFIG_USER_ONLY - cc->tcg_ops.debug_excp_handler = breakpoint_handler; -#endif -} diff --git a/target/i386/tcg-cpu.h b/target/i386/tcg-cpu.h deleted file mode 100644 index 81f02e562e..0000000000 --- a/target/i386/tcg-cpu.h +++ /dev/null @@ -1,15 +0,0 @@ -/* - * i386 TCG CPU class initialization - * - * Copyright 2020 SUSE LLC - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - */ - -#ifndef TCG_CPU_H -#define TCG_CPU_H - -void tcg_cpu_common_class_init(CPUClass *cc); - -#endif /* TCG_CPU_H */ diff --git a/target/i386/tcg/cpu.c b/target/i386/tcg/cpu.c new file mode 100644 index 0000000000..e9c8b20f0e --- /dev/null +++ b/target/i386/tcg/cpu.c @@ -0,0 +1,173 @@ +/* + * i386 TCG cpu class initialization + * + * Copyright (c) 2003 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "helper-tcg.h" +#include "qemu/accel.h" +#include "hw/core/accel-cpu.h" + +#ifndef CONFIG_USER_ONLY +#include "sysemu/sysemu.h" +#include "qemu/units.h" +#include "exec/address-spaces.h" +#endif + +/* Frob eflags into and out of the CPU temporary format. */ + +static void x86_cpu_exec_enter(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + CPUX86State *env = &cpu->env; + + CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + env->df = 1 - (2 * ((env->eflags >> 10) & 1)); + CC_OP = CC_OP_EFLAGS; + env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); +} + +static void x86_cpu_exec_exit(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + CPUX86State *env = &cpu->env; + + env->eflags = cpu_compute_eflags(env); +} + +static void x86_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb) +{ + X86CPU *cpu = X86_CPU(cs); + + cpu->env.eip = tb->pc - tb->cs_base; +} + +#ifndef CONFIG_USER_ONLY + +static void x86_cpu_machine_done(Notifier *n, void *unused) +{ + X86CPU *cpu = container_of(n, X86CPU, machine_done); + MemoryRegion *smram = + (MemoryRegion *) object_resolve_path("/machine/smram", NULL); + + if (smram) { + cpu->smram = g_new(MemoryRegion, 1); + memory_region_init_alias(cpu->smram, OBJECT(cpu), "smram", + smram, 0, 4 * GiB); + memory_region_set_enabled(cpu->smram, true); + memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, + cpu->smram, 1); + } +} + +static void tcg_cpu_realizefn(CPUState *cs, Error **errp) +{ + X86CPU *cpu = X86_CPU(cs); + + /* + * The realize order is important, since x86_cpu_realize() checks if + * nothing else has been set by the user (or by accelerators) in + * cpu->ucode_rev and cpu->phys_bits, and the memory regions + * initialized here are needed for the vcpu initialization. + * + * realize order: + * tcg_cpu -> host_cpu -> x86_cpu + */ + cpu->cpu_as_mem = g_new(MemoryRegion, 1); + cpu->cpu_as_root = g_new(MemoryRegion, 1); + + /* Outer container... */ + memory_region_init(cpu->cpu_as_root, OBJECT(cpu), "memory", ~0ull); + memory_region_set_enabled(cpu->cpu_as_root, true); + + /* + * ... with two regions inside: normal system memory with low + * priority, and... + */ + memory_region_init_alias(cpu->cpu_as_mem, OBJECT(cpu), "memory", + get_system_memory(), 0, ~0ull); + memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->cpu_as_mem, 0); + memory_region_set_enabled(cpu->cpu_as_mem, true); + + cs->num_ases = 2; + cpu_address_space_init(cs, 0, "cpu-memory", cs->memory); + cpu_address_space_init(cs, 1, "cpu-smm", cpu->cpu_as_root); + + /* ... SMRAM with higher priority, linked from /machine/smram. */ + cpu->machine_done.notify = x86_cpu_machine_done; + qemu_add_machine_init_done_notifier(&cpu->machine_done); +} + +#else /* CONFIG_USER_ONLY */ + +static void tcg_cpu_realizefn(CPUState *cs, Error **errp) +{ +} + +#endif /* !CONFIG_USER_ONLY */ + + +static void tcg_cpu_class_init(CPUClass *cc) +{ + cc->do_interrupt = x86_cpu_do_interrupt; + cc->tcg_ops.cpu_exec_interrupt = x86_cpu_exec_interrupt; + cc->tcg_ops.synchronize_from_tb = x86_cpu_synchronize_from_tb; + cc->tcg_ops.cpu_exec_enter = x86_cpu_exec_enter; + cc->tcg_ops.cpu_exec_exit = x86_cpu_exec_exit; + cc->tcg_ops.initialize = tcg_x86_init; + cc->tcg_ops.tlb_fill = x86_cpu_tlb_fill; +#ifndef CONFIG_USER_ONLY + cc->tcg_ops.debug_excp_handler = breakpoint_handler; +#endif /* !CONFIG_USER_ONLY */ +} + +/* + * TCG-specific defaults that override all CPU models when using TCG + */ +static PropValue tcg_default_props[] = { + { "vme", "off" }, + { NULL, NULL }, +}; + +static void tcg_cpu_instance_init(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + /* Special cases not set in the X86CPUDefinition structs: */ + x86_cpu_apply_props(cpu, tcg_default_props); +} + +static void tcg_cpu_accel_class_init(ObjectClass *oc, void *data) +{ + AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); + + acc->cpu_realizefn = tcg_cpu_realizefn; + acc->cpu_class_init = tcg_cpu_class_init; + acc->cpu_instance_init = tcg_cpu_instance_init; +} +static const TypeInfo tcg_cpu_accel_type_info = { + .name = ACCEL_CPU_NAME("tcg"), + + .parent = TYPE_ACCEL_CPU, + .class_init = tcg_cpu_accel_class_init, + .abstract = true, +}; +static void tcg_cpu_accel_register_types(void) +{ + type_register_static(&tcg_cpu_accel_type_info); +} +type_init(tcg_cpu_accel_register_types); diff --git a/target/i386/tcg/meson.build b/target/i386/tcg/meson.build index 02794226c2..9e439df9c7 100644 --- a/target/i386/tcg/meson.build +++ b/target/i386/tcg/meson.build @@ -10,4 +10,5 @@ i386_ss.add(when: 'CONFIG_TCG', if_true: files( 'seg_helper.c', 'smm_helper.c', 'svm_helper.c', - 'translate.c'), if_false: files('tcg-stub.c')) + 'translate.c', + 'cpu.c'), if_false: files('tcg-stub.c'))