| Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 1 | #ifndef ASM_KVM_CACHE_REGS_H |
| 2 | #define ASM_KVM_CACHE_REGS_H |
| 3 | |
| Avi Kivity | 8ae0991 | 2010-01-21 15:31:51 +0200 | [diff] [blame] | 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 | |
| Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 9 | static 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 | |
| 18 | static 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 | |
| 27 | static inline unsigned long kvm_rip_read(struct kvm_vcpu *vcpu) |
| 28 | { |
| 29 | return kvm_register_read(vcpu, VCPU_REGS_RIP); |
| 30 | } |
| 31 | |
| 32 | static inline void kvm_rip_write(struct kvm_vcpu *vcpu, unsigned long val) |
| 33 | { |
| 34 | kvm_register_write(vcpu, VCPU_REGS_RIP, val); |
| 35 | } |
| 36 | |
| Avi Kivity | 6de4f3a | 2009-05-31 22:58:47 +0300 | [diff] [blame] | 37 | static 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 | |
| Avi Kivity | 4d4ec08 | 2009-12-29 18:07:30 +0200 | [diff] [blame] | 46 | static inline ulong kvm_read_cr0_bits(struct kvm_vcpu *vcpu, ulong mask) |
| 47 | { |
| Avi Kivity | 8ae0991 | 2010-01-21 15:31:51 +0200 | [diff] [blame] | 48 | ulong tmask = mask & KVM_POSSIBLE_CR0_GUEST_BITS; |
| 49 | if (tmask & vcpu->arch.cr0_guest_owned_bits) |
| Avi Kivity | e8467fd | 2009-12-29 18:43:06 +0200 | [diff] [blame] | 50 | kvm_x86_ops->decache_cr0_guest_bits(vcpu); |
| Avi Kivity | 4d4ec08 | 2009-12-29 18:07:30 +0200 | [diff] [blame] | 51 | return vcpu->arch.cr0 & mask; |
| 52 | } |
| 53 | |
| 54 | static inline ulong kvm_read_cr0(struct kvm_vcpu *vcpu) |
| 55 | { |
| 56 | return kvm_read_cr0_bits(vcpu, ~0UL); |
| 57 | } |
| 58 | |
| Avi Kivity | fc78f51 | 2009-12-07 12:16:48 +0200 | [diff] [blame] | 59 | static inline ulong kvm_read_cr4_bits(struct kvm_vcpu *vcpu, ulong mask) |
| 60 | { |
| Avi Kivity | 8ae0991 | 2010-01-21 15:31:51 +0200 | [diff] [blame] | 61 | ulong tmask = mask & KVM_POSSIBLE_CR4_GUEST_BITS; |
| 62 | if (tmask & vcpu->arch.cr4_guest_owned_bits) |
| Avi Kivity | fc78f51 | 2009-12-07 12:16:48 +0200 | [diff] [blame] | 63 | kvm_x86_ops->decache_cr4_guest_bits(vcpu); |
| 64 | return vcpu->arch.cr4 & mask; |
| 65 | } |
| 66 | |
| 67 | static inline ulong kvm_read_cr4(struct kvm_vcpu *vcpu) |
| 68 | { |
| 69 | return kvm_read_cr4_bits(vcpu, ~0UL); |
| 70 | } |
| 71 | |
| Marcelo Tosatti | 5fdbf97 | 2008-06-27 14:58:02 -0300 | [diff] [blame] | 72 | #endif |