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Commit d9a3a09a authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/kvm: remove dependency on struct save_area definition 



Replace the offsets based on the struct area_area with the offset
constants from asm-offsets.c based on the struct _lowcore.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 019d6bec

arch/s390/kernel/asm-offsets.c

+1 −0
Original line number Diff line number Diff line
@@ -181,6 +181,7 @@ int main(void) 
	OFFSET(__LC_PSW_SAVE_AREA, _lowcore, psw_save_area);

	OFFSET(__LC_PREFIX_SAVE_AREA, _lowcore, prefixreg_save_area);

	OFFSET(__LC_FP_CREG_SAVE_AREA, _lowcore, fpt_creg_save_area);

	OFFSET(__LC_TOD_PROGREG_SAVE_AREA, _lowcore, tod_progreg_save_area);

	OFFSET(__LC_CPU_TIMER_SAVE_AREA, _lowcore, cpu_timer_save_area);

	OFFSET(__LC_CLOCK_COMP_SAVE_AREA, _lowcore, clock_comp_save_area);

	OFFSET(__LC_AREGS_SAVE_AREA, _lowcore, access_regs_save_area);

arch/s390/kvm/kvm-s390.c

+15 −15
Original line number Diff line number Diff line
@@ -2270,37 +2270,37 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) 
	u64 clkcomp;

	int rc;



	px = kvm_s390_get_prefix(vcpu);

	if (gpa == KVM_S390_STORE_STATUS_NOADDR) {

		if (write_guest_abs(vcpu, 163, &archmode, 1))

			return -EFAULT;

		gpa = SAVE_AREA_BASE;

		gpa = 0;

	} else if (gpa == KVM_S390_STORE_STATUS_PREFIXED) {

		if (write_guest_real(vcpu, 163, &archmode, 1))

			return -EFAULT;

		gpa = kvm_s390_real_to_abs(vcpu, SAVE_AREA_BASE);

	}

	rc = write_guest_abs(vcpu, gpa + offsetof(struct save_area, fp_regs),

		gpa = px;

	} else

		gpa -= __LC_FPREGS_SAVE_AREA;

	rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,

			     vcpu->arch.guest_fpregs.fprs, 128);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, gp_regs),

	rc |= write_guest_abs(vcpu, gpa + __LC_GPREGS_SAVE_AREA,

			      vcpu->run->s.regs.gprs, 128);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, psw),

	rc |= write_guest_abs(vcpu, gpa + __LC_PSW_SAVE_AREA,

			      &vcpu->arch.sie_block->gpsw, 16);

	px = kvm_s390_get_prefix(vcpu);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, pref_reg),

	rc |= write_guest_abs(vcpu, gpa + __LC_PREFIX_SAVE_AREA,

			      &px, 4);

	rc |= write_guest_abs(vcpu,

			      gpa + offsetof(struct save_area, fp_ctrl_reg),

	rc |= write_guest_abs(vcpu, gpa + __LC_FP_CREG_SAVE_AREA,

			      &vcpu->arch.guest_fpregs.fpc, 4);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, tod_reg),

	rc |= write_guest_abs(vcpu, gpa + __LC_TOD_PROGREG_SAVE_AREA,

			      &vcpu->arch.sie_block->todpr, 4);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, timer),

	rc |= write_guest_abs(vcpu, gpa + __LC_CPU_TIMER_SAVE_AREA,

			      &vcpu->arch.sie_block->cputm, 8);

	clkcomp = vcpu->arch.sie_block->ckc >> 8;

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, clk_cmp),

	rc |= write_guest_abs(vcpu, gpa + __LC_CLOCK_COMP_SAVE_AREA,

			      &clkcomp, 8);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, acc_regs),

	rc |= write_guest_abs(vcpu, gpa + __LC_AREGS_SAVE_AREA,

			      &vcpu->run->s.regs.acrs, 64);

	rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, ctrl_regs),

	rc |= write_guest_abs(vcpu, gpa + __LC_CREGS_SAVE_AREA,

			      &vcpu->arch.sie_block->gcr, 128);

	return rc ? -EFAULT : 0;

}