forked from Minki/linux
24d1b15f72
To support xsave properly for the guest the SVM module need software support for it. As long as this is not present do not report the xsave as supported feature in cpuid. As a side-effect this patch moves the bit() helper function into the x86.h file so that it can be used in svm.c too. KVM-Stable-Tag. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
#ifndef ARCH_X86_KVM_X86_H
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#define ARCH_X86_KVM_X86_H
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#include <linux/kvm_host.h>
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#include "kvm_cache_regs.h"
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static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
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{
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vcpu->arch.exception.pending = false;
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}
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static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector,
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bool soft)
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{
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vcpu->arch.interrupt.pending = true;
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vcpu->arch.interrupt.soft = soft;
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vcpu->arch.interrupt.nr = vector;
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}
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static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
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{
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vcpu->arch.interrupt.pending = false;
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}
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static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||
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vcpu->arch.nmi_injected;
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}
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static inline bool kvm_exception_is_soft(unsigned int nr)
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{
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return (nr == BP_VECTOR) || (nr == OF_VECTOR);
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}
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struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
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u32 function, u32 index);
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static inline bool is_protmode(struct kvm_vcpu *vcpu)
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{
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return kvm_read_cr0_bits(vcpu, X86_CR0_PE);
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}
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static inline int is_long_mode(struct kvm_vcpu *vcpu)
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{
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#ifdef CONFIG_X86_64
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return vcpu->arch.efer & EFER_LMA;
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#else
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return 0;
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#endif
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}
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static inline bool mmu_is_nested(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu;
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}
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static inline int is_pae(struct kvm_vcpu *vcpu)
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{
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return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
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}
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static inline int is_pse(struct kvm_vcpu *vcpu)
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{
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return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
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}
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static inline int is_paging(struct kvm_vcpu *vcpu)
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{
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return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
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}
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static inline u32 bit(int bitno)
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{
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return 1 << (bitno & 31);
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}
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void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
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void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
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int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq);
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void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data);
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#endif
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