Commit 81480cc1 authored by Heiko Carstens's avatar Heiko Carstens Committed by Christian Borntraeger
Browse files

KVM: s390: convert pfault code 



Convert pfault code to new guest access functions.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: default avatarDominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 0f9701c6

arch/s390/kvm/diag.c

+4 −5
Original line number Diff line number Diff line
@@ -64,12 +64,12 @@ static int __diag_page_ref_service(struct kvm_vcpu *vcpu) 
	int rc;

	u16 rx = (vcpu->arch.sie_block->ipa & 0xf0) >> 4;

	u16 ry = (vcpu->arch.sie_block->ipa & 0x0f);

	unsigned long hva_token = KVM_HVA_ERR_BAD;



	if (vcpu->run->s.regs.gprs[rx] & 7)

		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);

	if (copy_from_guest(vcpu, &parm, vcpu->run->s.regs.gprs[rx], sizeof(parm)))

		return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);

	rc = read_guest(vcpu, vcpu->run->s.regs.gprs[rx], &parm, sizeof(parm));

	if (rc)

		return kvm_s390_inject_prog_cond(vcpu, rc);

	if (parm.parm_version != 2 || parm.parm_len < 5 || parm.code != 0x258)

		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -89,8 +89,7 @@ static int __diag_page_ref_service(struct kvm_vcpu *vcpu) 
		    parm.token_addr & 7 || parm.zarch != 0x8000000000000000ULL)

			return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);



		hva_token = gfn_to_hva(vcpu->kvm, gpa_to_gfn(parm.token_addr));

		if (kvm_is_error_hva(hva_token))

		if (kvm_is_error_gpa(vcpu->kvm, parm.token_addr))

			return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);



		vcpu->arch.pfault_token = parm.token_addr;

arch/s390/kvm/kvm-s390.c

+3 −2
Original line number Diff line number Diff line
@@ -1058,8 +1058,9 @@ static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu) 
	if (!vcpu->arch.gmap->pfault_enabled)

		return 0;



	hva = gmap_fault(current->thread.gmap_addr, vcpu->arch.gmap);

	if (copy_from_guest(vcpu, &arch.pfault_token, vcpu->arch.pfault_token, 8))

	hva = gfn_to_hva(vcpu->kvm, gpa_to_gfn(current->thread.gmap_addr));

	hva += current->thread.gmap_addr & ~PAGE_MASK;

	if (read_guest_real(vcpu, vcpu->arch.pfault_token, &arch.pfault_token, 8))

		return 0;



	rc = kvm_setup_async_pf(vcpu, current->thread.gmap_addr, hva, &arch);

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