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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5fdbf9765b
As suggested by Avi, introduce accessors to read/write guest registers. This simplifies the ->cache_regs/->decache_regs interface, and improves register caching which is important for VMX, where the cost of vmcs_read/vmcs_write is significant. [avi: fix warnings] Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
33 lines
811 B
C
33 lines
811 B
C
#ifndef ASM_KVM_CACHE_REGS_H
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#define ASM_KVM_CACHE_REGS_H
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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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#endif
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