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https://github.com/projectacrn/acrn-hypervisor.git
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47e193a7bb
This patch adds the split-lock emulation.
If a #AC is caused by instruction with LOCK prefix then
emulate it, otherwise, inject it back as it used to be.
1. Kick other vcpus of the guest to stop execution
and set the TF flag to have #DB if the guest has more
than one vcpu.
2. Skip over the LOCK prefix and resume the current
vcpu back to guest for execution.
3. Notify other vcpus to restart exception at the end
of handling the #DB since we have completed
the LOCK prefix instruction emulation.
Tracked-On: #5605
Signed-off-by: Jie Deng <jie.deng@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef CPUINFO_H
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#define CPUINFO_H
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#define MAX_PSTATE 20U /* max num of supported Px count */
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#define MAX_CSTATE 8U /* max num of supported Cx count */
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/* We support MAX_CSTATE num of Cx, means have (MAX_CSTATE - 1) Cx entries,
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* i.e. supported Cx entry index range from 1 to MAX_CX_ENTRY.
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*/
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#define MAX_CX_ENTRY (MAX_CSTATE - 1U)
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/* CPUID feature words */
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#define FEAT_1_ECX 0U /* CPUID[1].ECX */
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#define FEAT_1_EDX 1U /* CPUID[1].EDX */
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#define FEAT_7_0_EBX 2U /* CPUID[EAX=7,ECX=0].EBX */
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#define FEAT_7_0_ECX 3U /* CPUID[EAX=7,ECX=0].ECX */
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#define FEAT_7_0_EDX 4U /* CPUID[EAX=7,ECX=0].EDX */
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#define FEAT_8000_0001_ECX 5U /* CPUID[8000_0001].ECX */
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#define FEAT_8000_0001_EDX 6U /* CPUID[8000_0001].EDX */
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#define FEAT_8000_0007_EDX 7U /* CPUID[8000_0007].EDX */
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#define FEAT_8000_0008_EBX 8U /* CPUID[8000_0008].EBX */
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#define FEAT_D_0_EAX 9U /* CPUID[D][0].EAX */
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#define FEAT_D_0_EDX 10U /* CPUID[D][0].EDX */
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#define FEAT_D_1_EAX 11U /* CPUID[D][1].EAX */
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#define FEAT_D_1_ECX 13U /* CPUID[D][1].ECX */
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#define FEAT_D_1_EDX 14U /* CPUID[D][1].EDX */
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#define FEATURE_WORDS 15U
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struct cpuinfo_x86 {
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/* SDM 2-2 Vol.4 Table 2-1 uses DisplayFamily_DisplayModel to
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* distinguish Processor Families/Processor Number Series.
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*/
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uint8_t displayfamily, displaymodel;
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uint8_t virt_bits;
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uint8_t phys_bits;
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uint32_t cpuid_level;
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uint32_t extended_cpuid_level;
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uint64_t physical_address_mask;
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uint32_t cpuid_leaves[FEATURE_WORDS];
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char model_name[64];
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};
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bool has_monitor_cap(void);
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bool is_apl_platform(void);
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bool is_apicv_advanced_feature_supported(void);
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bool pcpu_has_cap(uint32_t bit);
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bool pcpu_has_vmx_ept_cap(uint32_t bit_mask);
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bool pcpu_has_vmx_vpid_cap(uint32_t bit_mask);
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bool is_apl_platform(void);
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bool has_core_cap(uint32_t bit_mask);
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bool is_ac_enabled(void);
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void init_pcpu_capabilities(void);
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void init_pcpu_model_name(void);
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int32_t detect_hardware_support(void);
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struct cpuinfo_x86 *get_pcpu_info(void);
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#endif /* CPUINFO_H */
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