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KVM: PPC: Book3S PR: Add new kvmppc_copyto/from_vcpu_tm APIs

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This patch adds 2 new APIs: kvmppc_copyto_vcpu_tm() and
kvmppc_copyfrom_vcpu_tm().  These 2 APIs will be used to copy from/to TM
data between VCPU_TM/VCPU area.

PR KVM will use these APIs for treclaim. or trechkpt. emulation.

Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Simon Guo 2018-05-23 15:01:56 +08:00 committed by Paul Mackerras
parent 36383a0862
commit de7ad93219
1 changed files with 41 additions and 0 deletions
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41
arch/powerpc/kvm/book3s_emulate.c
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@ -87,6 +87,47 @@ static bool spr_allowed(struct kvm_vcpu *vcpu, enum priv_level level)
return true;
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
static inline void kvmppc_copyto_vcpu_tm(struct kvm_vcpu *vcpu)
{
memcpy(&vcpu->arch.gpr_tm[0], &vcpu->arch.regs.gpr[0],
sizeof(vcpu->arch.gpr_tm));
memcpy(&vcpu->arch.fp_tm, &vcpu->arch.fp,
sizeof(struct thread_fp_state));
memcpy(&vcpu->arch.vr_tm, &vcpu->arch.vr,
sizeof(struct thread_vr_state));
vcpu->arch.ppr_tm = vcpu->arch.ppr;
vcpu->arch.dscr_tm = vcpu->arch.dscr;
vcpu->arch.amr_tm = vcpu->arch.amr;
vcpu->arch.ctr_tm = vcpu->arch.regs.ctr;
vcpu->arch.tar_tm = vcpu->arch.tar;
vcpu->arch.lr_tm = vcpu->arch.regs.link;
vcpu->arch.cr_tm = vcpu->arch.cr;
vcpu->arch.xer_tm = vcpu->arch.regs.xer;
vcpu->arch.vrsave_tm = vcpu->arch.vrsave;
}
static inline void kvmppc_copyfrom_vcpu_tm(struct kvm_vcpu *vcpu)
{
memcpy(&vcpu->arch.regs.gpr[0], &vcpu->arch.gpr_tm[0],
sizeof(vcpu->arch.regs.gpr));
memcpy(&vcpu->arch.fp, &vcpu->arch.fp_tm,
sizeof(struct thread_fp_state));
memcpy(&vcpu->arch.vr, &vcpu->arch.vr_tm,
sizeof(struct thread_vr_state));
vcpu->arch.ppr = vcpu->arch.ppr_tm;
vcpu->arch.dscr = vcpu->arch.dscr_tm;
vcpu->arch.amr = vcpu->arch.amr_tm;
vcpu->arch.regs.ctr = vcpu->arch.ctr_tm;
vcpu->arch.tar = vcpu->arch.tar_tm;
vcpu->arch.regs.link = vcpu->arch.lr_tm;
vcpu->arch.cr = vcpu->arch.cr_tm;
vcpu->arch.regs.xer = vcpu->arch.xer_tm;
vcpu->arch.vrsave = vcpu->arch.vrsave_tm;
}
#endif
int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{