Exemplos de kvm_s390_get_regs_rre em C++ (Cpp)

Exemplo n.º 1

Arquivo: priv.c Projeto: FEDEVEL/openrex-linux-3.14

static int handle_test_block(struct kvm_vcpu *vcpu)
{
	unsigned long hva;
	gpa_t addr;
	int reg2;

	if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
		return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);

	kvm_s390_get_regs_rre(vcpu, NULL, &reg2);
	addr = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK;
	addr = kvm_s390_real_to_abs(vcpu, addr);

	hva = gfn_to_hva(vcpu->kvm, gpa_to_gfn(addr));
	if (kvm_is_error_hva(hva))
		return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
	/*
	 * We don't expect errors on modern systems, and do not care
	 * about storage keys (yet), so let's just clear the page.
	 */
	if (clear_user((void __user *)hva, PAGE_SIZE) != 0)
		return -EFAULT;
	kvm_s390_set_psw_cc(vcpu, 0);
	vcpu->run->s.regs.gprs[0] = 0;
	return 0;
}

Exemplo n.º 2

Arquivo: priv.c Projeto: 59psi/linux

static int handle_epsw(struct kvm_vcpu *vcpu)
{
	int reg1, reg2;

	kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);

	/* This basically extracts the mask half of the psw. */
	vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000;
	vcpu->run->s.regs.gprs[reg1] |= vcpu->arch.sie_block->gpsw.mask >> 32;
	if (reg2) {
		vcpu->run->s.regs.gprs[reg2] &= 0xffffffff00000000;
		vcpu->run->s.regs.gprs[reg2] |=
			vcpu->arch.sie_block->gpsw.mask & 0x00000000ffffffff;
	}
	return 0;
}

Exemplo n.º 3

Arquivo: priv.c Projeto: 59psi/linux

static int handle_pfmf(struct kvm_vcpu *vcpu)
{
	int reg1, reg2;
	unsigned long start, end;

	vcpu->stat.instruction_pfmf++;

	kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);

	if (!MACHINE_HAS_PFMF)
		return kvm_s390_inject_program_int(vcpu, PGM_OPERATION);

	if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
		return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);

	if (vcpu->run->s.regs.gprs[reg1] & PFMF_RESERVED)
		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);

	/* Only provide non-quiescing support if the host supports it */
	if (vcpu->run->s.regs.gprs[reg1] & PFMF_NQ &&
	    S390_lowcore.stfl_fac_list & 0x00020000)
		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);

	/* No support for conditional-SSKE */
	if (vcpu->run->s.regs.gprs[reg1] & (PFMF_MR | PFMF_MC))
		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);

	start = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK;
	switch (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) {
	case 0x00000000:
		end = (start + (1UL << 12)) & ~((1UL << 12) - 1);
		break;
	case 0x00001000:
		end = (start + (1UL << 20)) & ~((1UL << 20) - 1);
		break;
	/* We dont support EDAT2
	case 0x00002000:
		end = (start + (1UL << 31)) & ~((1UL << 31) - 1);
		break;*/
	default:
		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
	}
	while (start < end) {
		unsigned long useraddr;

		useraddr = gmap_translate(start, vcpu->arch.gmap);
		if (IS_ERR((void *)useraddr))
			return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);

		if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) {
			if (clear_user((void __user *)useraddr, PAGE_SIZE))
				return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
		}

		if (vcpu->run->s.regs.gprs[reg1] & PFMF_SK) {
			if (set_guest_storage_key(current->mm, useraddr,
					vcpu->run->s.regs.gprs[reg1] & PFMF_KEY,
					vcpu->run->s.regs.gprs[reg1] & PFMF_NQ))
				return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
		}

		start += PAGE_SIZE;
	}
	if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC)
		vcpu->run->s.regs.gprs[reg2] = end;
	return 0;
}