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Commit de7ad932 authored by Simon Guo's avatar Simon Guo Committed by Paul Mackerras
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KVM: PPC: Book3S PR: Add new kvmppc_copyto/from_vcpu_tm APIs 



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: default avatarSimon Guo <wei.guo.simon@gmail.com>
Signed-off-by: default avatarPaul Mackerras <paulus@ozlabs.org>
parent 36383a08

arch/powerpc/kvm/book3s_emulate.c

+41 −0
Original line number Diff line number Diff line
@@ -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)

{