static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
unsigned long *reg)
{
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
struct kvm_s390_local_interrupt *li = NULL;
struct kvm_s390_interrupt_info *inti;
int rc;
u8 tmp;
/* make sure that the new value is valid memory */
address = address & 0x7fffe000u;
if ((copy_from_guest(vcpu, &tmp,
(u64) (address + vcpu->arch.sie_block->gmsor) , 1)) ||
(copy_from_guest(vcpu, &tmp, (u64) (address +
vcpu->arch.sie_block->gmsor + PAGE_SIZE), 1))) {
*reg |= SIGP_STAT_INVALID_PARAMETER;
return 1; /* invalid parameter */
}
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
if (!inti)
return 2; /* busy */
spin_lock(&fi->lock);
if (cpu_addr < KVM_MAX_VCPUS)
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 1; /* incorrect state */
*reg &= SIGP_STAT_INCORRECT_STATE;
kfree(inti);
goto out_fi;
}
spin_lock_bh(&li->lock);
/* cpu must be in stopped state */
if (atomic_read(li->cpuflags) & CPUSTAT_RUNNING) {
rc = 1; /* incorrect state */
*reg &= SIGP_STAT_INCORRECT_STATE;
kfree(inti);
goto out_li;
}
inti->type = KVM_S390_SIGP_SET_PREFIX;
inti->prefix.address = address;
list_add_tail(&inti->list, &li->list);
atomic_set(&li->active, 1);
if (waitqueue_active(&li->wq))
wake_up_interruptible(&li->wq);
rc = 0; /* order accepted */
VCPU_EVENT(vcpu, 4, "set prefix of cpu %02x to %x", cpu_addr, address);
out_li:
spin_unlock_bh(&li->lock);
out_fi:
spin_unlock(&fi->lock);
return rc;
}
int xenctl_cpumap_to_cpumask(
cpumask_var_t *cpumask, const struct xenctl_cpumap *xenctl_cpumap)
{
unsigned int guest_bytes, copy_bytes;
int err = 0;
uint8_t *bytemap = xzalloc_array(uint8_t, (nr_cpu_ids + 7) / 8);
if ( !bytemap )
return -ENOMEM;
guest_bytes = (xenctl_cpumap->nr_cpus + 7) / 8;
copy_bytes = min_t(unsigned int, guest_bytes, (nr_cpu_ids + 7) / 8);
if ( copy_bytes != 0 )
{
if ( copy_from_guest(bytemap, xenctl_cpumap->bitmap, copy_bytes) )
err = -EFAULT;
if ( (xenctl_cpumap->nr_cpus & 7) && (guest_bytes == copy_bytes) )
bytemap[guest_bytes-1] &= ~(0xff << (xenctl_cpumap->nr_cpus & 7));
}
if ( err )
/* nothing */;
else if ( alloc_cpumask_var(cpumask) )
bitmap_byte_to_long(cpumask_bits(*cpumask), bytemap, nr_cpu_ids);
else
err = -ENOMEM;
xfree(bytemap);
return err;
}
/**
* Xen scheduler callback function to perform a global (not domain-specific)
* adjustment. It is used by the ARINC 653 scheduler to put in place a new
* ARINC 653 schedule or to retrieve the schedule currently in place.
*
* @param ops Pointer to this instance of the scheduler structure
* @param sc Pointer to the scheduler operation specified by Domain 0
*/
static int
a653sched_adjust_global(const struct scheduler *ops,
struct xen_sysctl_scheduler_op *sc)
{
xen_sysctl_arinc653_schedule_t local_sched;
int rc = -EINVAL;
switch ( sc->cmd )
{
case XEN_SYSCTL_SCHEDOP_putinfo:
if ( copy_from_guest(&local_sched, sc->u.sched_arinc653.schedule, 1) )
{
rc = -EFAULT;
break;
}
rc = arinc653_sched_set(ops, &local_sched);
break;
case XEN_SYSCTL_SCHEDOP_getinfo:
memset(&local_sched, -1, sizeof(local_sched));
rc = arinc653_sched_get(ops, &local_sched);
if ( rc )
break;
if ( copy_to_guest(sc->u.sched_arinc653.schedule, &local_sched, 1) )
rc = -EFAULT;
break;
}
return rc;
}
static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu)
{
int rc, exception = 0;
if (psw_extint_disabled(vcpu))
return 0;
if (!(vcpu->arch.sie_block->gcr[0] & 0x800ul))
return 0;
rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1004);
if (rc == -EFAULT)
exception = 1;
rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
__LC_EXT_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
if (exception) {
printk("kvm: The guest lowcore is not mapped during interrupt "
"delivery, killing userspace\n");
do_exit(SIGKILL);
}
return 1;
}
static void setup_iomem_insn(struct lg_cpu *cpu, unsigned long iomem_addr)
{
cpu->pending.trap = 14;
cpu->pending.addr = iomem_addr;
copy_from_guest(cpu, cpu->pending.insn, cpu->regs->eip,
sizeof(cpu->pending.insn));
}
/*
* The eip contains the *virtual* address of the Guest's instruction:
* we copy the instruction here so the Launcher doesn't have to walk
* the page tables to decode it. We handle the case (eg. in a kernel
* module) where the instruction is over two pages, and the pages are
* virtually but not physically contiguous.
*
* The longest possible x86 instruction is 15 bytes, but we don't handle
* anything that strange.
*/
static void copy_from_guest(struct lg_cpu *cpu,
void *dst, unsigned long vaddr, size_t len)
{
size_t to_page_end = PAGE_SIZE - (vaddr % PAGE_SIZE);
unsigned long paddr;
BUG_ON(len > PAGE_SIZE);
/* If it goes over a page, copy in two parts. */
if (len > to_page_end) {
/* But make sure the next page is mapped! */
if (__guest_pa(cpu, vaddr + to_page_end, &paddr))
copy_from_guest(cpu, dst + to_page_end,
vaddr + to_page_end,
len - to_page_end);
else
/* Otherwise fill with zeroes. */
memset(dst + to_page_end, 0, len - to_page_end);
len = to_page_end;
}
/* This will kill the guest if it isn't mapped, but that
* shouldn't happen. */
__lgread(cpu, dst, guest_pa(cpu, vaddr), len);
}
static int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
const struct xenctl_bitmap *xenctl_bitmap,
unsigned int nbits)
{
unsigned int guest_bytes, copy_bytes;
int err = 0;
uint8_t *bytemap = xzalloc_array(uint8_t, (nbits + 7) / 8);
if ( !bytemap )
return -ENOMEM;
guest_bytes = (xenctl_bitmap->nr_bits + 7) / 8;
copy_bytes = min_t(unsigned int, guest_bytes, (nbits + 7) / 8);
if ( copy_bytes != 0 )
{
if ( copy_from_guest(bytemap, xenctl_bitmap->bitmap, copy_bytes) )
err = -EFAULT;
if ( (xenctl_bitmap->nr_bits & 7) && (guest_bytes == copy_bytes) )
bytemap[guest_bytes-1] &= ~(0xff << (xenctl_bitmap->nr_bits & 7));
}
if ( !err )
bitmap_byte_to_long(bitmap, bytemap, nbits);
xfree(bytemap);
return err;
}
static int handle_lpswe(struct kvm_vcpu *vcpu)
{
psw_t new_psw;
u64 addr;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
addr = kvm_s390_get_base_disp_s(vcpu);
if (addr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw)))
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
vcpu->arch.sie_block->gpsw = new_psw;
if (!is_valid_psw(&vcpu->arch.sie_block->gpsw))
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
handle_new_psw(vcpu);
return 0;
}
int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu)
{
u64 addr;
psw_compat_t new_psw;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu,
PGM_PRIVILEGED_OPERATION);
addr = kvm_s390_get_base_disp_s(vcpu);
if (addr & 7) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
goto out;
}
if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) {
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
goto out;
}
if (!(new_psw.mask & PSW32_MASK_BASE)) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
goto out;
}
vcpu->arch.sie_block->gpsw.mask =
(new_psw.mask & ~PSW32_MASK_BASE) << 32;
vcpu->arch.sie_block->gpsw.addr = new_psw.addr;
if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_UNASSIGNED) ||
(!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) &&
(vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_24)) ||
((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) ==
PSW_MASK_EA)) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
goto out;
}
handle_new_psw(vcpu);
out:
return 0;
}
int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu)
{
psw_t *gpsw = &vcpu->arch.sie_block->gpsw;
psw_compat_t new_psw;
u64 addr;
if (gpsw->mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
addr = kvm_s390_get_base_disp_s(vcpu);
if (addr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw)))
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
if (!(new_psw.mask & PSW32_MASK_BASE))
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
gpsw->mask = (new_psw.mask & ~PSW32_MASK_BASE) << 32;
gpsw->mask |= new_psw.addr & PSW32_ADDR_AMODE;
gpsw->addr = new_psw.addr & ~PSW32_ADDR_AMODE;
if (!is_valid_psw(gpsw))
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
handle_new_psw(vcpu);
return 0;
}
static int handle_lpswe(struct kvm_vcpu *vcpu)
{
u64 addr;
psw_t new_psw;
addr = kvm_s390_get_base_disp_s(vcpu);
if (addr & 7) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
goto out;
}
if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) {
kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
goto out;
}
vcpu->arch.sie_block->gpsw.mask = new_psw.mask;
vcpu->arch.sie_block->gpsw.addr = new_psw.addr;
if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_UNASSIGNED) ||
(((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) ==
PSW_MASK_BA) &&
(vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_31)) ||
(!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) &&
(vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_24)) ||
((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) ==
PSW_MASK_EA)) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
goto out;
}
handle_new_psw(vcpu);
out:
return 0;
}
static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
struct kvm_s390_interrupt_info *inti)
{
const unsigned short table[] = { 2, 4, 4, 6 };
int rc, exception = 0;
switch (inti->type) {
case KVM_S390_INT_EMERGENCY:
VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp emerg");
vcpu->stat.deliver_emergency_signal++;
rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1201);
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u16(vcpu, __LC_EXT_CPU_ADDR, inti->emerg.code);
if (rc == -EFAULT)
exception = 1;
rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
__LC_EXT_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
break;
case KVM_S390_INT_EXTERNAL_CALL:
VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp ext call");
vcpu->stat.deliver_external_call++;
rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1202);
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u16(vcpu, __LC_EXT_CPU_ADDR, inti->extcall.code);
if (rc == -EFAULT)
exception = 1;
rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
__LC_EXT_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
break;
case KVM_S390_INT_SERVICE:
VCPU_EVENT(vcpu, 4, "interrupt: sclp parm:%x",
inti->ext.ext_params);
vcpu->stat.deliver_service_signal++;
rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2401);
if (rc == -EFAULT)
exception = 1;
rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
__LC_EXT_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u32(vcpu, __LC_EXT_PARAMS, inti->ext.ext_params);
if (rc == -EFAULT)
exception = 1;
break;
case KVM_S390_INT_VIRTIO:
VCPU_EVENT(vcpu, 4, "interrupt: virtio parm:%x,parm64:%llx",
inti->ext.ext_params, inti->ext.ext_params2);
vcpu->stat.deliver_virtio_interrupt++;
rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2603);
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u16(vcpu, __LC_EXT_CPU_ADDR, 0x0d00);
if (rc == -EFAULT)
exception = 1;
rc = copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
__LC_EXT_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u32(vcpu, __LC_EXT_PARAMS, inti->ext.ext_params);
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u64(vcpu, __LC_EXT_PARAMS2,
inti->ext.ext_params2);
if (rc == -EFAULT)
exception = 1;
break;
case KVM_S390_SIGP_STOP:
VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu stop");
vcpu->stat.deliver_stop_signal++;
__set_intercept_indicator(vcpu, inti);
break;
case KVM_S390_SIGP_SET_PREFIX:
VCPU_EVENT(vcpu, 4, "interrupt: set prefix to %x",
inti->prefix.address);
vcpu->stat.deliver_prefix_signal++;
kvm_s390_set_prefix(vcpu, inti->prefix.address);
break;
case KVM_S390_RESTART:
VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu restart");
vcpu->stat.deliver_restart_signal++;
rc = copy_to_guest(vcpu, offsetof(struct _lowcore,
restart_old_psw), &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
offsetof(struct _lowcore, restart_psw), sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
atomic_clear_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags);
break;
case KVM_S390_PROGRAM_INT:
VCPU_EVENT(vcpu, 4, "interrupt: pgm check code:%x, ilc:%x",
inti->pgm.code,
table[vcpu->arch.sie_block->ipa >> 14]);
vcpu->stat.deliver_program_int++;
rc = put_guest_u16(vcpu, __LC_PGM_INT_CODE, inti->pgm.code);
if (rc == -EFAULT)
exception = 1;
rc = put_guest_u16(vcpu, __LC_PGM_ILC,
table[vcpu->arch.sie_block->ipa >> 14]);
if (rc == -EFAULT)
exception = 1;
rc = copy_to_guest(vcpu, __LC_PGM_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
rc = copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
__LC_PGM_NEW_PSW, sizeof(psw_t));
if (rc == -EFAULT)
exception = 1;
break;
default:
BUG();
}
if (exception) {
printk("kvm: The guest lowcore is not mapped during interrupt "
"delivery, killing userspace\n");
do_exit(SIGKILL);
}
}
static void setup_emulate_insn(struct lg_cpu *cpu)
{
cpu->pending.trap = 13;
copy_from_guest(cpu, cpu->pending.insn, cpu->regs->eip,
sizeof(cpu->pending.insn));
}
IA64FAULT
ia64_hypercall(struct pt_regs *regs)
{
struct vcpu *v = current;
struct sal_ret_values x;
efi_status_t efi_ret_value;
fpswa_ret_t fpswa_ret;
IA64FAULT fault;
unsigned long index = regs->r2 & FW_HYPERCALL_NUM_MASK_HIGH;
perfc_incra(fw_hypercall, index >> 8);
switch (index) {
case FW_HYPERCALL_XEN:
return xen_hypercall(regs);
case FW_HYPERCALL_XEN_FAST:
return xen_fast_hypercall(regs);
case FW_HYPERCALL_PAL_CALL:
//printk("*** PAL hypercall: index=%d\n",regs->r28);
//FIXME: This should call a C routine
#if 0
// This is very conservative, but avoids a possible
// (and deadly) freeze in paravirtualized domains due
// to a yet-to-be-found bug where pending_interruption
// is zero when it shouldn't be. Since PAL is called
// in the idle loop, this should resolve it
VCPU(v,pending_interruption) = 1;
#endif
if (regs->r28 == PAL_HALT_LIGHT) {
if (vcpu_deliverable_interrupts(v) ||
event_pending(v)) {
perfc_incr(idle_when_pending);
vcpu_pend_unspecified_interrupt(v);
//printk("idle w/int#%d pending!\n",pi);
//this shouldn't happen, but it apparently does quite a bit! so don't
//allow it to happen... i.e. if a domain has an interrupt pending and
//it tries to halt itself because it thinks it is idle, just return here
//as deliver_pending_interrupt is called on the way out and will deliver it
}
else {
perfc_incr(pal_halt_light);
migrate_timer(&v->arch.hlt_timer,
v->processor);
set_timer(&v->arch.hlt_timer,
vcpu_get_next_timer_ns(v));
do_sched_op_compat(SCHEDOP_block, 0);
/* do_block only pends a softirq */
do_softirq();
stop_timer(&v->arch.hlt_timer);
/* do_block() calls
* local_event_delivery_enable(),
* but PAL CALL must be called with
* psr.i = 0 and psr.i is unchanged.
* SDM vol.2 Part I 11.10.2
* PAL Calling Conventions.
*/
local_event_delivery_disable();
}
regs->r8 = 0;
regs->r9 = 0;
regs->r10 = 0;
regs->r11 = 0;
}
else {
struct ia64_pal_retval y;
if (regs->r28 >= PAL_COPY_PAL)
y = xen_pal_emulator
(regs->r28, vcpu_get_gr (v, 33),
vcpu_get_gr (v, 34),
vcpu_get_gr (v, 35));
else
y = xen_pal_emulator(regs->r28,regs->r29,
regs->r30,regs->r31);
regs->r8 = y.status; regs->r9 = y.v0;
regs->r10 = y.v1; regs->r11 = y.v2;
}
break;
case FW_HYPERCALL_SAL_CALL:
x = sal_emulator(vcpu_get_gr(v,32),vcpu_get_gr(v,33),
vcpu_get_gr(v,34),vcpu_get_gr(v,35),
vcpu_get_gr(v,36),vcpu_get_gr(v,37),
vcpu_get_gr(v,38),vcpu_get_gr(v,39));
regs->r8 = x.r8; regs->r9 = x.r9;
regs->r10 = x.r10; regs->r11 = x.r11;
break;
case FW_HYPERCALL_SAL_RETURN:
if ( !test_and_set_bit(_VPF_down, &v->pause_flags) )
vcpu_sleep_nosync(v);
break;
case FW_HYPERCALL_EFI_CALL:
efi_ret_value = efi_emulator (regs, &fault);
if (fault != IA64_NO_FAULT) return fault;
regs->r8 = efi_ret_value;
break;
case FW_HYPERCALL_IPI:
fw_hypercall_ipi (regs);
break;
case FW_HYPERCALL_SET_SHARED_INFO_VA:
regs->r8 = domain_set_shared_info_va (regs->r28);
break;
case FW_HYPERCALL_FPSWA_BASE:
switch (regs->r2) {
case FW_HYPERCALL_FPSWA_BROKEN:
gdprintk(XENLOG_WARNING,
"Old fpswa hypercall was called (0x%lx).\n"
"Please update your domain builder. ip 0x%lx\n",
FW_HYPERCALL_FPSWA_BROKEN, regs->cr_iip);
fpswa_ret = fw_hypercall_fpswa_error();
break;
case FW_HYPERCALL_FPSWA:
fpswa_ret = fw_hypercall_fpswa(v, regs);
break;
default:
gdprintk(XENLOG_ERR, "unknown fpswa hypercall %lx\n",
regs->r2);
fpswa_ret = fw_hypercall_fpswa_error();
break;
}
regs->r8 = fpswa_ret.status;
regs->r9 = fpswa_ret.err0;
regs->r10 = fpswa_ret.err1;
regs->r11 = fpswa_ret.err2;
break;
case __HYPERVISOR_opt_feature:
{
XEN_GUEST_HANDLE(void) arg;
struct xen_ia64_opt_feature optf;
set_xen_guest_handle(arg, (void*)(vcpu_get_gr(v, 32)));
if (copy_from_guest(&optf, arg, 1) == 0)
regs->r8 = domain_opt_feature(v->domain, &optf);
else
regs->r8 = -EFAULT;
break;
}
case FW_HYPERCALL_SIOEMU:
sioemu_hypercall(regs);
break;
default:
printk("unknown ia64 fw hypercall %lx\n", regs->r2);
regs->r8 = do_ni_hypercall();
}
return IA64_NO_FAULT;
}
