Commit e9eb790b authored by Shivaprasad G Bhat's avatar Shivaprasad G Bhat Committed by Michael Ellerman
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KVM: PPC: Book3S HV: Add one-reg interface for HASHKEYR register 



The patch adds a one-reg register identifier which can be used to
read and set the virtual HASHKEYR for the guest during enter/exit
with KVM_REG_PPC_HASHKEYR. The specific SPR KVM API documentation
too updated.

Signed-off-by: default avatarShivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/171759283170.1480.12904332463112769129.stgit@linux.ibm.com
parent 2d6be3ca

Documentation/virt/kvm/api.rst

+1 −0
Original line number Diff line number Diff line
@@ -2439,6 +2439,7 @@ registers, find a list below: 
  PPC     KVM_REG_PPC_PSSCR               64

  PPC     KVM_REG_PPC_DEC_EXPIRY          64

  PPC     KVM_REG_PPC_PTCR                64

  PPC     KVM_REG_PPC_HASHKEYR            64

  PPC     KVM_REG_PPC_DAWR1               64

  PPC     KVM_REG_PPC_DAWRX1              64

  PPC     KVM_REG_PPC_DEXCR               64

arch/powerpc/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -600,6 +600,7 @@ struct kvm_vcpu_arch { 
	ulong dawr1;

	ulong dawrx1;

	ulong dexcr;

	ulong hashkeyr;

	ulong ciabr;

	ulong cfar;

	ulong ppr;

arch/powerpc/include/uapi/asm/kvm.h

+1 −0
Original line number Diff line number Diff line
@@ -646,6 +646,7 @@ struct kvm_ppc_cpu_char { 
#define KVM_REG_PPC_DAWR1	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc4)

#define KVM_REG_PPC_DAWRX1	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc5)

#define KVM_REG_PPC_DEXCR	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc6)

#define KVM_REG_PPC_HASHKEYR	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc7)



/* Transactional Memory checkpointed state:

 * This is all GPRs, all VSX regs and a subset of SPRs

arch/powerpc/kvm/book3s_hv.c

+6 −0
Original line number Diff line number Diff line
@@ -2352,6 +2352,9 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, 
	case KVM_REG_PPC_DEXCR:

		*val = get_reg_val(id, kvmppc_get_dexcr_hv(vcpu));

		break;

	case KVM_REG_PPC_HASHKEYR:

		*val = get_reg_val(id, kvmppc_get_hashkeyr_hv(vcpu));

		break;

	case KVM_REG_PPC_CIABR:

		*val = get_reg_val(id, kvmppc_get_ciabr_hv(vcpu));

		break;
@@ -2598,6 +2601,9 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, 
	case KVM_REG_PPC_DEXCR:

		kvmppc_set_dexcr_hv(vcpu, set_reg_val(id, *val));

		break;

	case KVM_REG_PPC_HASHKEYR:

		kvmppc_set_hashkeyr_hv(vcpu, set_reg_val(id, *val));

		break;

	case KVM_REG_PPC_CIABR:

		kvmppc_set_ciabr_hv(vcpu, set_reg_val(id, *val));

		/* Don't allow setting breakpoints in hypervisor code */

arch/powerpc/kvm/book3s_hv.h

+1 −0
Original line number Diff line number Diff line
@@ -117,6 +117,7 @@ KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawr1, 64, KVMPPC_GSID_DAWR1) 
KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawrx0, 64, KVMPPC_GSID_DAWRX0)

KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawrx1, 64, KVMPPC_GSID_DAWRX1)

KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dexcr, 64, KVMPPC_GSID_DEXCR)

KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(hashkeyr, 64, KVMPPC_GSID_HASHKEYR)

KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(ciabr, 64, KVMPPC_GSID_CIABR)

KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(wort, 64, KVMPPC_GSID_WORT)

KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(ppr, 64, KVMPPC_GSID_PPR)