From patchwork Mon Jul 15 04:49:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhao Liu X-Patchwork-Id: 13732863 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 87CB9139CF7 for ; Mon, 15 Jul 2024 04:34:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721018064; cv=none; b=Ng66mJxBStF/Wkfkjd1KN166VL2ceGwrzvyBpXFkZFuoZ+9fc4xxerfZcse6Pg7axfSWeUe1vMUKIWPpQhgR9sKQt+WjnuVqRfamD/XqtcGHR2TFYwaKSyFhi9Gjl8zTwdN/fkr251NVGbaPnloUgc2b09ZbVyXVu9GQ0MjoBYA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721018064; c=relaxed/simple; bh=aSztLg0iNMT3uyyClDjLkfY1lXlQlvk27Z83Xiyv+UE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=nFwGGUFLyEQ0ktV8/j8MTWt/p8Ig8RB0+CGQ10SakVSPIgUBmUzBv7fU7XMph/dQ0Xx5TU35cKKj2Uo69hORYVYATrTxUaqkj6dIWh97HnWti3DpBt96YUtxINZ8a7g2hgrucE+gwBjfxSc2fAudFDCK7RdDmcF/HKnY4LQOf8Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Eg4SZTRi; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Eg4SZTRi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721018063; x=1752554063; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aSztLg0iNMT3uyyClDjLkfY1lXlQlvk27Z83Xiyv+UE=; b=Eg4SZTRiew7Hpyh8qWw4bq45KEYojTEUppaobgRY7EhB1grK2cIFK1Tc WaI4OIn01UiSlkH+NdG1kWpIwHVFpUxj/7Wti/VcLzhp9FuNjXyCdUR79 eOeY3NekFcs8cTjoUtV64gO3e42SdHdz7ltWgNpbDdLKPiv0c+GkOb7Ce e0DSK0USuTKoY+UrcO0G4ZTkmOHZ2h2M0CnpRLg0hh4AkzKzhassKzvZ0 mbwfmjUXX5l1+DSIwf47LJxJSZzjJTxi6+5jk1LKkdTec5Y3rbMQescES F0rjvMZlLD369hxkMG0byZ8Y5SIsHeVrOYvqIDj1MPWMV4lNB9X8X8be8 A==; X-CSE-ConnectionGUID: 8giWVrnuQVyCm8zo2MxCDQ== X-CSE-MsgGUID: LCtvETIYRUukQtd9Cp3iIA== X-IronPort-AV: E=McAfee;i="6700,10204,11133"; a="35809800" X-IronPort-AV: E=Sophos;i="6.09,209,1716274800"; d="scan'208";a="35809800" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2024 21:34:23 -0700 X-CSE-ConnectionGUID: qLMAMfovQ4at0ONxQWqhBA== X-CSE-MsgGUID: mqDUxjmfQVuAsdrJZBP1xA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,209,1716274800"; d="scan'208";a="54043035" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by fmviesa004.fm.intel.com with ESMTP; 14 Jul 2024 21:34:19 -0700 From: Zhao Liu To: Paolo Bonzini , Richard Henderson , Eduardo Habkost , "Michael S . Tsirkin" , Marcel Apfelbaum , Marcelo Tosatti Cc: Xiaoyao Li , Pankaj Gupta , Zide Chen , qemu-devel@nongnu.org, kvm@vger.kernel.org, Zhao Liu Subject: [PATCH v3 1/8] target/i386/kvm: Add feature bit definitions for KVM CPUID Date: Mon, 15 Jul 2024 12:49:48 +0800 Message-Id: <20240715044955.3954304-2-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240715044955.3954304-1-zhao1.liu@intel.com> References: <20240715044955.3954304-1-zhao1.liu@intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add feature definitions for KVM_CPUID_FEATURES in CPUID ( CPUID[4000_0001].EAX and CPUID[4000_0001].EDX), to get rid of lots of offset calculations. Signed-off-by: Zhao Liu --- v3: Resolved a rebasing conflict. v2: Changed the prefix from CPUID_FEAT_KVM_* to CPUID_KVM_*. (Xiaoyao) --- hw/i386/kvm/clock.c | 5 ++--- target/i386/cpu.h | 23 +++++++++++++++++++++++ target/i386/kvm/kvm.c | 28 ++++++++++++++-------------- 3 files changed, 39 insertions(+), 17 deletions(-) diff --git a/hw/i386/kvm/clock.c b/hw/i386/kvm/clock.c index 40aa9a32c32c..ce416c05a3d0 100644 --- a/hw/i386/kvm/clock.c +++ b/hw/i386/kvm/clock.c @@ -27,7 +27,6 @@ #include "qapi/error.h" #include -#include "standard-headers/asm-x86/kvm_para.h" #include "qom/object.h" #define TYPE_KVM_CLOCK "kvmclock" @@ -334,8 +333,8 @@ void kvmclock_create(bool create_always) assert(kvm_enabled()); if (create_always || - cpu->env.features[FEAT_KVM] & ((1ULL << KVM_FEATURE_CLOCKSOURCE) | - (1ULL << KVM_FEATURE_CLOCKSOURCE2))) { + cpu->env.features[FEAT_KVM] & (CPUID_KVM_CLOCK | + CPUID_KVM_CLOCK2)) { sysbus_create_simple(TYPE_KVM_CLOCK, -1, NULL); } } diff --git a/target/i386/cpu.h b/target/i386/cpu.h index c43ac01c794a..b59bdc1c9d9d 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -28,6 +28,7 @@ #include "qapi/qapi-types-common.h" #include "qemu/cpu-float.h" #include "qemu/timer.h" +#include "standard-headers/asm-x86/kvm_para.h" #define XEN_NR_VIRQS 24 @@ -988,6 +989,28 @@ uint64_t x86_cpu_get_supported_feature_word(X86CPU *cpu, FeatureWord w); #define CPUID_8000_0007_EBX_OVERFLOW_RECOV (1U << 0) #define CPUID_8000_0007_EBX_SUCCOR (1U << 1) +/* (Old) KVM paravirtualized clocksource */ +#define CPUID_KVM_CLOCK (1U << KVM_FEATURE_CLOCKSOURCE) +/* (New) KVM specific paravirtualized clocksource */ +#define CPUID_KVM_CLOCK2 (1U << KVM_FEATURE_CLOCKSOURCE2) +/* KVM asynchronous page fault */ +#define CPUID_KVM_ASYNCPF (1U << KVM_FEATURE_ASYNC_PF) +/* KVM stolen (when guest vCPU is not running) time accounting */ +#define CPUID_KVM_STEAL_TIME (1U << KVM_FEATURE_STEAL_TIME) +/* KVM paravirtualized end-of-interrupt signaling */ +#define CPUID_KVM_PV_EOI (1U << KVM_FEATURE_PV_EOI) +/* KVM paravirtualized spinlocks support */ +#define CPUID_KVM_PV_UNHALT (1U << KVM_FEATURE_PV_UNHALT) +/* KVM host-side polling on HLT control from the guest */ +#define CPUID_KVM_POLL_CONTROL (1U << KVM_FEATURE_POLL_CONTROL) +/* KVM interrupt based asynchronous page fault*/ +#define CPUID_KVM_ASYNCPF_INT (1U << KVM_FEATURE_ASYNC_PF_INT) +/* KVM 'Extended Destination ID' support for external interrupts */ +#define CPUID_KVM_MSI_EXT_DEST_ID (1U << KVM_FEATURE_MSI_EXT_DEST_ID) + +/* Hint to KVM that vCPUs expect never preempted for an unlimited time */ +#define CPUID_KVM_HINTS_REALTIME (1U << KVM_HINTS_REALTIME) + /* CLZERO instruction */ #define CPUID_8000_0008_EBX_CLZERO (1U << 0) /* Always save/restore FP error pointers */ diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index becca2efa5b4..86e42beb78bf 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -539,13 +539,13 @@ uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function, * be enabled without the in-kernel irqchip */ if (!kvm_irqchip_in_kernel()) { - ret &= ~(1U << KVM_FEATURE_PV_UNHALT); + ret &= ~CPUID_KVM_PV_UNHALT; } if (kvm_irqchip_is_split()) { - ret |= 1U << KVM_FEATURE_MSI_EXT_DEST_ID; + ret |= CPUID_KVM_MSI_EXT_DEST_ID; } } else if (function == KVM_CPUID_FEATURES && reg == R_EDX) { - ret |= 1U << KVM_HINTS_REALTIME; + ret |= CPUID_KVM_HINTS_REALTIME; } if (current_machine->cgs) { @@ -3424,20 +3424,20 @@ static int kvm_put_msrs(X86CPU *cpu, int level) kvm_msr_entry_add(cpu, MSR_IA32_TSC, env->tsc); kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_msr); kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr); - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) { + if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF_INT) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, env->async_pf_int_msr); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) { + if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, env->async_pf_en_msr); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_PV_EOI)) { + if (env->features[FEAT_KVM] & CPUID_KVM_PV_EOI) { kvm_msr_entry_add(cpu, MSR_KVM_PV_EOI_EN, env->pv_eoi_en_msr); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_STEAL_TIME)) { + if (env->features[FEAT_KVM] & CPUID_KVM_STEAL_TIME) { kvm_msr_entry_add(cpu, MSR_KVM_STEAL_TIME, env->steal_time_msr); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_POLL_CONTROL)) { + if (env->features[FEAT_KVM] & CPUID_KVM_POLL_CONTROL) { kvm_msr_entry_add(cpu, MSR_KVM_POLL_CONTROL, env->poll_control_msr); } @@ -3900,19 +3900,19 @@ static int kvm_get_msrs(X86CPU *cpu) #endif kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0); kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0); - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) { + if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF_INT) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) { + if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, 0); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_PV_EOI)) { + if (env->features[FEAT_KVM] & CPUID_KVM_PV_EOI) { kvm_msr_entry_add(cpu, MSR_KVM_PV_EOI_EN, 0); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_STEAL_TIME)) { + if (env->features[FEAT_KVM] & CPUID_KVM_STEAL_TIME) { kvm_msr_entry_add(cpu, MSR_KVM_STEAL_TIME, 0); } - if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_POLL_CONTROL)) { + if (env->features[FEAT_KVM] & CPUID_KVM_POLL_CONTROL) { kvm_msr_entry_add(cpu, MSR_KVM_POLL_CONTROL, 1); } if (has_architectural_pmu_version > 0) { @@ -5613,7 +5613,7 @@ uint64_t kvm_swizzle_msi_ext_dest_id(uint64_t address) return address; } env = &X86_CPU(first_cpu)->env; - if (!(env->features[FEAT_KVM] & (1 << KVM_FEATURE_MSI_EXT_DEST_ID))) { + if (!(env->features[FEAT_KVM] & CPUID_KVM_MSI_EXT_DEST_ID)) { return address; }