/arch/x86/kvm/kvm_cache_regs.h
C++ Header | 72 lines | 59 code | 13 blank | 0 comment | 4 complexity | 11f27e44f28e88092097a31e1757b6e2 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1#ifndef ASM_KVM_CACHE_REGS_H 2#define ASM_KVM_CACHE_REGS_H 3 4#define KVM_POSSIBLE_CR0_GUEST_BITS X86_CR0_TS 5#define KVM_POSSIBLE_CR4_GUEST_BITS \ 6 (X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR \ 7 | X86_CR4_OSXMMEXCPT | X86_CR4_PGE) 8 9static inline unsigned long kvm_register_read(struct kvm_vcpu *vcpu, 10 enum kvm_reg reg) 11{ 12 if (!test_bit(reg, (unsigned long *)&vcpu->arch.regs_avail)) 13 kvm_x86_ops->cache_reg(vcpu, reg); 14 15 return vcpu->arch.regs[reg]; 16} 17 18static inline void kvm_register_write(struct kvm_vcpu *vcpu, 19 enum kvm_reg reg, 20 unsigned long val) 21{ 22 vcpu->arch.regs[reg] = val; 23 __set_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty); 24 __set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail); 25} 26 27static inline unsigned long kvm_rip_read(struct kvm_vcpu *vcpu) 28{ 29 return kvm_register_read(vcpu, VCPU_REGS_RIP); 30} 31 32static inline void kvm_rip_write(struct kvm_vcpu *vcpu, unsigned long val) 33{ 34 kvm_register_write(vcpu, VCPU_REGS_RIP, val); 35} 36 37static inline u64 kvm_pdptr_read(struct kvm_vcpu *vcpu, int index) 38{ 39 if (!test_bit(VCPU_EXREG_PDPTR, 40 (unsigned long *)&vcpu->arch.regs_avail)) 41 kvm_x86_ops->cache_reg(vcpu, VCPU_EXREG_PDPTR); 42 43 return vcpu->arch.pdptrs[index]; 44} 45 46static inline ulong kvm_read_cr0_bits(struct kvm_vcpu *vcpu, ulong mask) 47{ 48 ulong tmask = mask & KVM_POSSIBLE_CR0_GUEST_BITS; 49 if (tmask & vcpu->arch.cr0_guest_owned_bits) 50 kvm_x86_ops->decache_cr0_guest_bits(vcpu); 51 return vcpu->arch.cr0 & mask; 52} 53 54static inline ulong kvm_read_cr0(struct kvm_vcpu *vcpu) 55{ 56 return kvm_read_cr0_bits(vcpu, ~0UL); 57} 58 59static inline ulong kvm_read_cr4_bits(struct kvm_vcpu *vcpu, ulong mask) 60{ 61 ulong tmask = mask & KVM_POSSIBLE_CR4_GUEST_BITS; 62 if (tmask & vcpu->arch.cr4_guest_owned_bits) 63 kvm_x86_ops->decache_cr4_guest_bits(vcpu); 64 return vcpu->arch.cr4 & mask; 65} 66 67static inline ulong kvm_read_cr4(struct kvm_vcpu *vcpu) 68{ 69 return kvm_read_cr4_bits(vcpu, ~0UL); 70} 71 72#endif