mirror of
https://github.com/torvalds/linux.git
synced 2024-11-02 18:21:49 +00:00
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
|
|
#define ASM_KVM_CACHE_REGS_H
|
|
|
|
static inline unsigned long kvm_register_read(struct kvm_vcpu *vcpu,
|
|
enum kvm_reg reg)
|
|
{
|
|
if (!test_bit(reg, (unsigned long *)&vcpu->arch.regs_avail))
|
|
kvm_x86_ops->cache_reg(vcpu, reg);
|
|
|
|
return vcpu->arch.regs[reg];
|
|
}
|
|
|
|
static inline void kvm_register_write(struct kvm_vcpu *vcpu,
|
|
enum kvm_reg reg,
|
|
unsigned long val)
|
|
{
|
|
vcpu->arch.regs[reg] = val;
|
|
__set_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty);
|
|
__set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
|
|
}
|
|
|
|
static inline unsigned long kvm_rip_read(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvm_register_read(vcpu, VCPU_REGS_RIP);
|
|
}
|
|
|
|
static inline void kvm_rip_write(struct kvm_vcpu *vcpu, unsigned long val)
|
|
{
|
|
kvm_register_write(vcpu, VCPU_REGS_RIP, val);
|
|
}
|
|
|
|
#endif
|