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Commit 4b7bb626 authored by Xiantao Zhang's avatar Xiantao Zhang Committed by Avi Kivity
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KVM: ia64: Add the support for translating PAL Call's pointer args 



Add the support to translate PAL Call's pointer args.

Signed-off-by: default avatarXiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 27d14644

arch/ia64/kvm/process.c

+45 −3
Original line number Diff line number Diff line
@@ -550,18 +550,60 @@ void reflect_interruption(u64 ifa, u64 isr, u64 iim, 
	inject_guest_interruption(vcpu, vector);

}



static unsigned long kvm_trans_pal_call_args(struct kvm_vcpu *vcpu,

						unsigned long arg)

{

	struct thash_data *data;

	unsigned long gpa, poff;



	if (!is_physical_mode(vcpu)) {

		/* Depends on caller to provide the DTR or DTC mapping.*/

		data = vtlb_lookup(vcpu, arg, D_TLB);

		if (data)

			gpa = data->page_flags & _PAGE_PPN_MASK;

		else {

			data = vhpt_lookup(arg);

			if (!data)

				return 0;

			gpa = data->gpaddr & _PAGE_PPN_MASK;

		}



		poff = arg & (PSIZE(data->ps) - 1);

		arg = PAGEALIGN(gpa, data->ps) | poff;

	}

	arg = kvm_gpa_to_mpa(arg << 1 >> 1);



	return (unsigned long)__va(arg);

}



static void set_pal_call_data(struct kvm_vcpu *vcpu)

{

	struct exit_ctl_data *p = &vcpu->arch.exit_data;

	unsigned long gr28 = vcpu_get_gr(vcpu, 28);

	unsigned long gr29 = vcpu_get_gr(vcpu, 29);

	unsigned long gr30 = vcpu_get_gr(vcpu, 30);



	/*FIXME:For static and stacked convention, firmware

	 * has put the parameters in gr28-gr31 before

	 * break to vmm  !!*/



	p->u.pal_data.gr28 = vcpu_get_gr(vcpu, 28);

	p->u.pal_data.gr29 = vcpu_get_gr(vcpu, 29);

	switch (gr28) {

	case PAL_PERF_MON_INFO:

	case PAL_HALT_INFO:

		p->u.pal_data.gr29 =  kvm_trans_pal_call_args(vcpu, gr29);

		p->u.pal_data.gr30 = vcpu_get_gr(vcpu, 30);

		break;

	case PAL_BRAND_INFO:

		p->u.pal_data.gr29 = gr29;;

		p->u.pal_data.gr30 = kvm_trans_pal_call_args(vcpu, gr30);

		break;

	default:

		p->u.pal_data.gr29 = gr29;;

		p->u.pal_data.gr30 = vcpu_get_gr(vcpu, 30);

	}

	p->u.pal_data.gr28 = gr28;

	p->u.pal_data.gr31 = vcpu_get_gr(vcpu, 31);



	p->exit_reason = EXIT_REASON_PAL_CALL;

}