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107 lines
2.7 KiB
107 lines
2.7 KiB
#ifndef ASM_KVM_CACHE_REGS_H |
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#define ASM_KVM_CACHE_REGS_H |
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#define KVM_POSSIBLE_CR0_GUEST_BITS X86_CR0_TS |
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#define KVM_POSSIBLE_CR4_GUEST_BITS \ |
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(X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR \ |
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| X86_CR4_OSXMMEXCPT | X86_CR4_PGE) |
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static inline unsigned long kvm_register_read(struct kvm_vcpu *vcpu, |
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enum kvm_reg reg) |
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{ |
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if (!test_bit(reg, (unsigned long *)&vcpu->arch.regs_avail)) |
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kvm_x86_ops->cache_reg(vcpu, reg); |
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return vcpu->arch.regs[reg]; |
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} |
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static inline void kvm_register_write(struct kvm_vcpu *vcpu, |
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enum kvm_reg reg, |
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unsigned long val) |
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{ |
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vcpu->arch.regs[reg] = val; |
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__set_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty); |
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__set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail); |
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} |
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static inline unsigned long kvm_rip_read(struct kvm_vcpu *vcpu) |
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{ |
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return kvm_register_read(vcpu, VCPU_REGS_RIP); |
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} |
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static inline void kvm_rip_write(struct kvm_vcpu *vcpu, unsigned long val) |
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{ |
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kvm_register_write(vcpu, VCPU_REGS_RIP, val); |
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} |
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static inline u64 kvm_pdptr_read(struct kvm_vcpu *vcpu, int index) |
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{ |
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might_sleep(); /* on svm */ |
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if (!test_bit(VCPU_EXREG_PDPTR, |
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(unsigned long *)&vcpu->arch.regs_avail)) |
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kvm_x86_ops->cache_reg(vcpu, VCPU_EXREG_PDPTR); |
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return vcpu->arch.walk_mmu->pdptrs[index]; |
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} |
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static inline ulong kvm_read_cr0_bits(struct kvm_vcpu *vcpu, ulong mask) |
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{ |
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ulong tmask = mask & KVM_POSSIBLE_CR0_GUEST_BITS; |
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if (tmask & vcpu->arch.cr0_guest_owned_bits) |
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kvm_x86_ops->decache_cr0_guest_bits(vcpu); |
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return vcpu->arch.cr0 & mask; |
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} |
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static inline ulong kvm_read_cr0(struct kvm_vcpu *vcpu) |
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{ |
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return kvm_read_cr0_bits(vcpu, ~0UL); |
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} |
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static inline ulong kvm_read_cr4_bits(struct kvm_vcpu *vcpu, ulong mask) |
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{ |
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ulong tmask = mask & KVM_POSSIBLE_CR4_GUEST_BITS; |
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if (tmask & vcpu->arch.cr4_guest_owned_bits) |
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kvm_x86_ops->decache_cr4_guest_bits(vcpu); |
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return vcpu->arch.cr4 & mask; |
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} |
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static inline ulong kvm_read_cr3(struct kvm_vcpu *vcpu) |
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{ |
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if (!test_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail)) |
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kvm_x86_ops->decache_cr3(vcpu); |
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return vcpu->arch.cr3; |
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} |
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static inline ulong kvm_read_cr4(struct kvm_vcpu *vcpu) |
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{ |
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return kvm_read_cr4_bits(vcpu, ~0UL); |
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} |
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static inline u64 kvm_read_edx_eax(struct kvm_vcpu *vcpu) |
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{ |
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return (kvm_register_read(vcpu, VCPU_REGS_RAX) & -1u) |
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| ((u64)(kvm_register_read(vcpu, VCPU_REGS_RDX) & -1u) << 32); |
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} |
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static inline void enter_guest_mode(struct kvm_vcpu *vcpu) |
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{ |
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vcpu->arch.hflags |= HF_GUEST_MASK; |
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} |
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static inline void leave_guest_mode(struct kvm_vcpu *vcpu) |
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{ |
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vcpu->arch.hflags &= ~HF_GUEST_MASK; |
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} |
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static inline bool is_guest_mode(struct kvm_vcpu *vcpu) |
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{ |
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return vcpu->arch.hflags & HF_GUEST_MASK; |
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} |
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static inline bool is_smm(struct kvm_vcpu *vcpu) |
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{ |
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return vcpu->arch.hflags & HF_SMM_MASK; |
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} |
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#endif
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