19e2a9fb9d
Specify maximum possible APIC ID assigned for current VM session to KVM prior to the creation of vCPUs. By this setting, KVM can set up VM-scoped data structure indexed by the APIC ID, e.g. Posted-Interrupt Descriptor pointer table to support Intel IPI virtualization, with the most optimal memory footprint. It can be achieved by calling KVM_ENABLE_CAP for KVM_CAP_MAX_VCPU_ID capability once KVM has enabled it. Ignoring the return error if KVM doesn't support this capability yet. Signed-off-by: Zeng Guang <guang.zeng@intel.com> Acked-by: Peter Xu <peterx@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <20220825025246.26618-1-guang.zeng@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
52 lines
950 B
C
52 lines
950 B
C
/*
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* QEMU KVM x86 specific function stubs
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*
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* Copyright Linaro Limited 2012
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*
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* Author: Peter Maydell <peter.maydell@linaro.org>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "kvm_i386.h"
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#ifndef __OPTIMIZE__
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bool kvm_has_smm(void)
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{
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return 1;
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}
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bool kvm_enable_x2apic(void)
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{
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return false;
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}
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/* This function is only called inside conditionals which we
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* rely on the compiler to optimize out when CONFIG_KVM is not
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* defined.
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*/
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uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
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uint32_t index, int reg)
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{
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abort();
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}
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#endif
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bool kvm_hv_vpindex_settable(void)
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{
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return false;
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}
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bool kvm_hyperv_expand_features(X86CPU *cpu, Error **errp)
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{
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abort();
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}
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void kvm_set_max_apic_id(uint32_t max_apic_id)
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{
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return;
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}
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