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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v7 3/9] ioreq-server: create basic ioreq server abstraction.
Collect together data structures concerning device emulation together into
a new struct hvm_ioreq_server.
Code that deals with the shared and buffered ioreq pages is extracted from
functions such as hvm_domain_initialise, hvm_vcpu_initialise and do_hvm_op
and consolidated into a set of hvm_ioreq_server manipulation functions. The
lock in the hvm_ioreq_page served two different purposes and has been
replaced by separate locks in the hvm_ioreq_server structure.
Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
Cc: Keir Fraser <keir@xxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
---
xen/arch/x86/hvm/hvm.c | 414 ++++++++++++++++++++++++++------------
xen/include/asm-x86/hvm/domain.h | 36 +++-
xen/include/asm-x86/hvm/vcpu.h | 12 +-
3 files changed, 328 insertions(+), 134 deletions(-)
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index d371639..62d25a9 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -363,38 +363,43 @@ void hvm_migrate_pirqs(struct vcpu *v)
spin_unlock(&d->event_lock);
}
-static ioreq_t *get_ioreq(struct vcpu *v)
+static ioreq_t *get_ioreq(struct hvm_ioreq_server *s, struct vcpu *v)
{
- struct domain *d = v->domain;
- shared_iopage_t *p = d->arch.hvm_domain.ioreq.va;
+ shared_iopage_t *p = s->ioreq.va;
- ASSERT((v == current) || spin_is_locked(&d->arch.hvm_domain.ioreq.lock));
+ ASSERT((v == current) || !vcpu_runnable(v));
+ ASSERT(p != NULL);
- return p ? &p->vcpu_ioreq[v->vcpu_id] : NULL;
+ return &p->vcpu_ioreq[v->vcpu_id];
}
bool_t hvm_io_pending(struct vcpu *v)
{
- ioreq_t *p = get_ioreq(v);
+ struct hvm_ioreq_server *s = v->domain->arch.hvm_domain.ioreq_server;
+ ioreq_t *p;
- if ( !p )
+ if ( !s )
return 0;
+ p = get_ioreq(s, v);
return p->state != STATE_IOREQ_NONE;
}
void hvm_do_resume(struct vcpu *v)
{
- ioreq_t *p = get_ioreq(v);
+ struct domain *d = v->domain;
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
check_wakeup_from_wait();
if ( is_hvm_vcpu(v) )
pt_restore_timer(v);
- /* NB. Optimised for common case (p->state == STATE_IOREQ_NONE). */
- if ( p )
+ if ( s )
{
+ ioreq_t *p = get_ioreq(s, v);
+
+ /* NB. Optimised for common case (p->state == STATE_IOREQ_NONE). */
while ( p->state != STATE_IOREQ_NONE )
{
switch ( p->state )
@@ -405,13 +410,13 @@ void hvm_do_resume(struct vcpu *v)
break;
case STATE_IOREQ_READY: /* IOREQ_{READY,INPROCESS} ->
IORESP_READY */
case STATE_IOREQ_INPROCESS:
- wait_on_xen_event_channel(v->arch.hvm_vcpu.xen_port,
+ wait_on_xen_event_channel(p->vp_eport,
(p->state != STATE_IOREQ_READY) &&
(p->state != STATE_IOREQ_INPROCESS));
break;
default:
gdprintk(XENLOG_ERR, "Weird HVM iorequest state %d.\n",
p->state);
- domain_crash(v->domain);
+ domain_crash(d);
return; /* bail */
}
}
@@ -425,14 +430,6 @@ void hvm_do_resume(struct vcpu *v)
}
}
-static void hvm_init_ioreq_page(
- struct domain *d, struct hvm_ioreq_page *iorp)
-{
- memset(iorp, 0, sizeof(*iorp));
- spin_lock_init(&iorp->lock);
- domain_pause(d);
-}
-
void destroy_ring_for_helper(
void **_va, struct page_info *page)
{
@@ -446,16 +443,11 @@ void destroy_ring_for_helper(
}
}
-static void hvm_unmap_ioreq_page(
- struct domain *d, struct hvm_ioreq_page *iorp)
+static void hvm_unmap_ioreq_page(struct hvm_ioreq_server *s, bool_t buf)
{
- spin_lock(&iorp->lock);
-
- ASSERT(d->is_dying);
+ struct hvm_ioreq_page *iorp = buf ? &s->bufioreq : &s->ioreq;
destroy_ring_for_helper(&iorp->va, iorp->page);
-
- spin_unlock(&iorp->lock);
}
int prepare_ring_for_helper(
@@ -503,8 +495,10 @@ int prepare_ring_for_helper(
}
static int hvm_map_ioreq_page(
- struct domain *d, struct hvm_ioreq_page *iorp, unsigned long gmfn)
+ struct hvm_ioreq_server *s, bool_t buf, unsigned long gmfn)
{
+ struct domain *d = s->domain;
+ struct hvm_ioreq_page *iorp = buf ? &s->bufioreq : &s->ioreq;
struct page_info *page;
void *va;
int rc;
@@ -512,22 +506,15 @@ static int hvm_map_ioreq_page(
if ( (rc = prepare_ring_for_helper(d, gmfn, &page, &va)) )
return rc;
- spin_lock(&iorp->lock);
-
if ( (iorp->va != NULL) || d->is_dying )
{
destroy_ring_for_helper(&va, page);
- spin_unlock(&iorp->lock);
return -EINVAL;
}
iorp->va = va;
iorp->page = page;
- spin_unlock(&iorp->lock);
-
- domain_unpause(d);
-
return 0;
}
@@ -571,8 +558,230 @@ static int handle_pvh_io(
return X86EMUL_OKAY;
}
+static void hvm_update_ioreq_evtchn(struct hvm_ioreq_server *s,
+ struct hvm_ioreq_vcpu *sv)
+{
+ ASSERT(spin_is_locked(&s->lock));
+
+ if ( s->ioreq.va != NULL )
+ {
+ ioreq_t *p = get_ioreq(s, sv->vcpu);
+
+ p->vp_eport = sv->ioreq_evtchn;
+ }
+}
+
+static int hvm_ioreq_server_add_vcpu(struct hvm_ioreq_server *s,
+ struct vcpu *v)
+{
+ struct hvm_ioreq_vcpu *sv;
+ int rc;
+
+ sv = xzalloc(struct hvm_ioreq_vcpu);
+
+ rc = -ENOMEM;
+ if ( !sv )
+ goto fail1;
+
+ spin_lock(&s->lock);
+
+ rc = alloc_unbound_xen_event_channel(v, s->domid, NULL);
+ if ( rc < 0 )
+ goto fail2;
+
+ sv->ioreq_evtchn = rc;
+
+ if ( v->vcpu_id == 0 )
+ {
+ struct domain *d = s->domain;
+
+ rc = alloc_unbound_xen_event_channel(v, s->domid, NULL);
+ if ( rc < 0 )
+ goto fail3;
+
+ s->bufioreq_evtchn = rc;
+ d->arch.hvm_domain.params[HVM_PARAM_BUFIOREQ_EVTCHN] =
+ s->bufioreq_evtchn;
+ }
+
+ sv->vcpu = v;
+
+ list_add(&sv->list_entry, &s->ioreq_vcpu_list);
+
+ hvm_update_ioreq_evtchn(s, sv);
+
+ spin_unlock(&s->lock);
+ return 0;
+
+ fail3:
+ free_xen_event_channel(v, sv->ioreq_evtchn);
+
+ fail2:
+ spin_unlock(&s->lock);
+ xfree(sv);
+
+ fail1:
+ return rc;
+}
+
+static void hvm_ioreq_server_remove_vcpu(struct hvm_ioreq_server *s,
+ struct vcpu *v)
+{
+ struct hvm_ioreq_vcpu *sv;
+
+ spin_lock(&s->lock);
+
+ list_for_each_entry ( sv,
+ &s->ioreq_vcpu_list,
+ list_entry )
+ {
+ if ( sv->vcpu != v )
+ continue;
+
+ list_del(&sv->list_entry);
+
+ if ( v->vcpu_id == 0 )
+ free_xen_event_channel(v, s->bufioreq_evtchn);
+
+ free_xen_event_channel(v, sv->ioreq_evtchn);
+
+ xfree(sv);
+ break;
+ }
+
+ spin_unlock(&s->lock);
+}
+
+static int hvm_create_ioreq_server(struct domain *d, domid_t domid)
+{
+ struct hvm_ioreq_server *s;
+
+ s = xzalloc(struct hvm_ioreq_server);
+ if ( !s )
+ return -ENOMEM;
+
+ s->domain = d;
+ s->domid = domid;
+
+ spin_lock_init(&s->lock);
+ INIT_LIST_HEAD(&s->ioreq_vcpu_list);
+ spin_lock_init(&s->bufioreq_lock);
+
+ /*
+ * The domain needs to wait until HVM_PARAM_IOREQ_PFN and
+ * HVM_PARAM_BUFIOREQ_PFN are both set.
+ */
+ domain_pause(d);
+ domain_pause(d);
+
+ d->arch.hvm_domain.ioreq_server = s;
+ return 0;
+}
+
+static void hvm_destroy_ioreq_server(struct domain *d)
+{
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
+
+ hvm_unmap_ioreq_page(s, 1);
+ hvm_unmap_ioreq_page(s, 0);
+
+ xfree(s);
+}
+
+static int hvm_set_ioreq_pfn(struct domain *d, bool_t buf,
+ unsigned long pfn)
+{
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
+ int rc;
+
+ spin_lock(&s->lock);
+
+ rc = hvm_map_ioreq_page(s, buf, pfn);
+ if ( rc )
+ goto fail;
+
+ if ( !buf )
+ {
+ struct hvm_ioreq_vcpu *sv;
+
+ list_for_each_entry ( sv,
+ &s->ioreq_vcpu_list,
+ list_entry )
+ hvm_update_ioreq_evtchn(s, sv);
+ }
+
+ spin_unlock(&s->lock);
+ domain_unpause(d); /* domain_pause() in hvm_create_ioreq_server() */
+
+ return 0;
+
+ fail:
+ spin_unlock(&s->lock);
+ return rc;
+}
+
+static int hvm_replace_event_channel(struct vcpu *v, domid_t remote_domid,
+ evtchn_port_t *p_port)
+{
+ int old_port, new_port;
+
+ new_port = alloc_unbound_xen_event_channel(v, remote_domid, NULL);
+ if ( new_port < 0 )
+ return new_port;
+
+ /* xchg() ensures that only we call free_xen_event_channel(). */
+ old_port = xchg(p_port, new_port);
+ free_xen_event_channel(v, old_port);
+ return 0;
+}
+
+static int hvm_set_dm_domain(struct domain *d, domid_t domid)
+{
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
+ int rc = 0;
+
+ domain_pause(d);
+ spin_lock(&s->lock);
+
+ if ( s->domid != domid ) {
+ struct hvm_ioreq_vcpu *sv;
+
+ list_for_each_entry ( sv,
+ &s->ioreq_vcpu_list,
+ list_entry )
+ {
+ struct vcpu *v = sv->vcpu;
+
+ if ( v->vcpu_id == 0 )
+ {
+ rc = hvm_replace_event_channel(v, domid,
+ &s->bufioreq_evtchn);
+ if ( rc )
+ break;
+
+ d->arch.hvm_domain.params[HVM_PARAM_BUFIOREQ_EVTCHN] =
+ s->bufioreq_evtchn;
+ }
+
+ rc = hvm_replace_event_channel(v, domid, &sv->ioreq_evtchn);
+ if ( rc )
+ break;
+
+ hvm_update_ioreq_evtchn(s, sv);
+ }
+
+ s->domid = domid;
+ }
+
+ spin_unlock(&s->lock);
+ domain_unpause(d);
+
+ return rc;
+}
+
int hvm_domain_initialise(struct domain *d)
{
+ domid_t domid;
int rc;
if ( !hvm_enabled )
@@ -638,17 +847,21 @@ int hvm_domain_initialise(struct domain *d)
rtc_init(d);
- hvm_init_ioreq_page(d, &d->arch.hvm_domain.ioreq);
- hvm_init_ioreq_page(d, &d->arch.hvm_domain.buf_ioreq);
+ domid = d->arch.hvm_domain.params[HVM_PARAM_DM_DOMAIN];
+ rc = hvm_create_ioreq_server(d, domid);
+ if ( rc != 0 )
+ goto fail2;
register_portio_handler(d, 0xe9, 1, hvm_print_line);
rc = hvm_funcs.domain_initialise(d);
if ( rc != 0 )
- goto fail2;
+ goto fail3;
return 0;
+ fail3:
+ hvm_destroy_ioreq_server(d);
fail2:
rtc_deinit(d);
stdvga_deinit(d);
@@ -672,8 +885,7 @@ void hvm_domain_relinquish_resources(struct domain *d)
if ( hvm_funcs.nhvm_domain_relinquish_resources )
hvm_funcs.nhvm_domain_relinquish_resources(d);
- hvm_unmap_ioreq_page(d, &d->arch.hvm_domain.ioreq);
- hvm_unmap_ioreq_page(d, &d->arch.hvm_domain.buf_ioreq);
+ hvm_destroy_ioreq_server(d);
msixtbl_pt_cleanup(d);
@@ -1306,7 +1518,7 @@ int hvm_vcpu_initialise(struct vcpu *v)
{
int rc;
struct domain *d = v->domain;
- domid_t dm_domid;
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
hvm_asid_flush_vcpu(v);
@@ -1349,30 +1561,10 @@ int hvm_vcpu_initialise(struct vcpu *v)
&& (rc = nestedhvm_vcpu_initialise(v)) < 0 ) /* teardown:
nestedhvm_vcpu_destroy */
goto fail5;
- dm_domid = d->arch.hvm_domain.params[HVM_PARAM_DM_DOMAIN];
-
- /* Create ioreq event channel. */
- rc = alloc_unbound_xen_event_channel(v, dm_domid, NULL); /* teardown: none
*/
- if ( rc < 0 )
+ rc = hvm_ioreq_server_add_vcpu(s, v);
+ if ( rc != 0 )
goto fail6;
- /* Register ioreq event channel. */
- v->arch.hvm_vcpu.xen_port = rc;
-
- if ( v->vcpu_id == 0 )
- {
- /* Create bufioreq event channel. */
- rc = alloc_unbound_xen_event_channel(v, dm_domid, NULL); /* teardown:
none */
- if ( rc < 0 )
- goto fail6;
- d->arch.hvm_domain.params[HVM_PARAM_BUFIOREQ_EVTCHN] = rc;
- }
-
- spin_lock(&d->arch.hvm_domain.ioreq.lock);
- if ( d->arch.hvm_domain.ioreq.va != NULL )
- get_ioreq(v)->vp_eport = v->arch.hvm_vcpu.xen_port;
- spin_unlock(&d->arch.hvm_domain.ioreq.lock);
-
if ( v->vcpu_id == 0 )
{
/* NB. All these really belong in hvm_domain_initialise(). */
@@ -1405,6 +1597,11 @@ int hvm_vcpu_initialise(struct vcpu *v)
void hvm_vcpu_destroy(struct vcpu *v)
{
+ struct domain *d = v->domain;
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
+
+ hvm_ioreq_server_remove_vcpu(s, v);
+
nestedhvm_vcpu_destroy(v);
free_compat_arg_xlat(v);
@@ -1416,9 +1613,6 @@ void hvm_vcpu_destroy(struct vcpu *v)
vlapic_destroy(v);
hvm_funcs.vcpu_destroy(v);
-
- /* Event channel is already freed by evtchn_destroy(). */
- /*free_xen_event_channel(v, v->arch.hvm_vcpu.xen_port);*/
}
void hvm_vcpu_down(struct vcpu *v)
@@ -1449,8 +1643,9 @@ int hvm_buffered_io_send(ioreq_t *p)
{
struct vcpu *v = current;
struct domain *d = v->domain;
- struct hvm_ioreq_page *iorp = &d->arch.hvm_domain.buf_ioreq;
- buffered_iopage_t *pg = iorp->va;
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
+ struct hvm_ioreq_page *iorp;
+ buffered_iopage_t *pg;
buf_ioreq_t bp = { .data = p->data,
.addr = p->addr,
.type = p->type,
@@ -1461,6 +1656,12 @@ int hvm_buffered_io_send(ioreq_t *p)
/* Ensure buffered_iopage fits in a page */
BUILD_BUG_ON(sizeof(buffered_iopage_t) > PAGE_SIZE);
+ if ( !s )
+ return 0;
+
+ iorp = &s->bufioreq;
+ pg = iorp->va;
+
/*
* Return 0 for the cases we can't deal with:
* - 'addr' is only a 20-bit field, so we cannot address beyond 1MB
@@ -1492,13 +1693,13 @@ int hvm_buffered_io_send(ioreq_t *p)
return 0;
}
- spin_lock(&iorp->lock);
+ spin_lock(&s->bufioreq_lock);
if ( (pg->write_pointer - pg->read_pointer) >=
(IOREQ_BUFFER_SLOT_NUM - qw) )
{
/* The queue is full: send the iopacket through the normal path. */
- spin_unlock(&iorp->lock);
+ spin_unlock(&s->bufioreq_lock);
return 0;
}
@@ -1514,33 +1715,37 @@ int hvm_buffered_io_send(ioreq_t *p)
wmb();
pg->write_pointer += qw ? 2 : 1;
- notify_via_xen_event_channel(d,
d->arch.hvm_domain.params[HVM_PARAM_BUFIOREQ_EVTCHN]);
- spin_unlock(&iorp->lock);
+ notify_via_xen_event_channel(d, s->bufioreq_evtchn);
+ spin_unlock(&s->bufioreq_lock);
return 1;
}
bool_t hvm_has_dm(struct domain *d)
{
- return !!d->arch.hvm_domain.ioreq.va;
+ return !!d->arch.hvm_domain.ioreq_server;
}
bool_t hvm_send_assist_req(ioreq_t *proto_p)
{
struct vcpu *v = current;
- ioreq_t *p = get_ioreq(v);
+ struct domain *d = v->domain;
+ struct hvm_ioreq_server *s = d->arch.hvm_domain.ioreq_server;
+ ioreq_t *p;
if ( unlikely(!vcpu_start_shutdown_deferral(v)) )
return 0; /* implicitly bins the i/o operation */
- if ( !p )
+ if ( !s )
return 0;
+ p = get_ioreq(s, v);
+
if ( unlikely(p->state != STATE_IOREQ_NONE) )
{
/* This indicates a bug in the device model. Crash the domain. */
gdprintk(XENLOG_ERR, "Device model set bad IO state %d.\n", p->state);
- domain_crash(v->domain);
+ domain_crash(d);
return 0;
}
@@ -1555,7 +1760,7 @@ bool_t hvm_send_assist_req(ioreq_t *proto_p)
* prepare_wait_on_xen_event_channel() is an implicit barrier.
*/
p->state = STATE_IOREQ_READY;
- notify_via_xen_event_channel(v->domain, p->vp_eport);
+ notify_via_xen_event_channel(d, p->vp_eport);
return 1;
}
@@ -4170,21 +4375,6 @@ static int hvmop_flush_tlb_all(void)
return 0;
}
-static int hvm_replace_event_channel(struct vcpu *v, domid_t remote_domid,
- int *p_port)
-{
- int old_port, new_port;
-
- new_port = alloc_unbound_xen_event_channel(v, remote_domid, NULL);
- if ( new_port < 0 )
- return new_port;
-
- /* xchg() ensures that only we call free_xen_event_channel(). */
- old_port = xchg(p_port, new_port);
- free_xen_event_channel(v, old_port);
- return 0;
-}
-
#define HVMOP_op_mask 0xff
long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE_PARAM(void) arg)
@@ -4200,7 +4390,6 @@ long do_hvm_op(unsigned long op,
XEN_GUEST_HANDLE_PARAM(void) arg)
case HVMOP_get_param:
{
struct xen_hvm_param a;
- struct hvm_ioreq_page *iorp;
struct domain *d;
struct vcpu *v;
@@ -4233,19 +4422,10 @@ long do_hvm_op(unsigned long op,
XEN_GUEST_HANDLE_PARAM(void) arg)
switch ( a.index )
{
case HVM_PARAM_IOREQ_PFN:
- iorp = &d->arch.hvm_domain.ioreq;
- if ( (rc = hvm_map_ioreq_page(d, iorp, a.value)) != 0 )
- break;
- spin_lock(&iorp->lock);
- if ( iorp->va != NULL )
- /* Initialise evtchn port info if VCPUs already created. */
- for_each_vcpu ( d, v )
- get_ioreq(v)->vp_eport = v->arch.hvm_vcpu.xen_port;
- spin_unlock(&iorp->lock);
+ rc = hvm_set_ioreq_pfn(d, 0, a.value);
break;
case HVM_PARAM_BUFIOREQ_PFN:
- iorp = &d->arch.hvm_domain.buf_ioreq;
- rc = hvm_map_ioreq_page(d, iorp, a.value);
+ rc = hvm_set_ioreq_pfn(d, 1, a.value);
break;
case HVM_PARAM_CALLBACK_IRQ:
hvm_set_callback_via(d, a.value);
@@ -4300,31 +4480,7 @@ long do_hvm_op(unsigned long op,
XEN_GUEST_HANDLE_PARAM(void) arg)
if ( a.value == DOMID_SELF )
a.value = curr_d->domain_id;
- rc = 0;
- domain_pause(d); /* safe to change per-vcpu xen_port */
- if ( d->vcpu[0] )
- rc = hvm_replace_event_channel(d->vcpu[0], a.value,
- (int *)&d->vcpu[0]->domain->arch.hvm_domain.params
- [HVM_PARAM_BUFIOREQ_EVTCHN]);
- if ( rc )
- {
- domain_unpause(d);
- break;
- }
- iorp = &d->arch.hvm_domain.ioreq;
- for_each_vcpu ( d, v )
- {
- rc = hvm_replace_event_channel(v, a.value,
- &v->arch.hvm_vcpu.xen_port);
- if ( rc )
- break;
-
- spin_lock(&iorp->lock);
- if ( iorp->va != NULL )
- get_ioreq(v)->vp_eport = v->arch.hvm_vcpu.xen_port;
- spin_unlock(&iorp->lock);
- }
- domain_unpause(d);
+ rc = hvm_set_dm_domain(d, a.value);
break;
case HVM_PARAM_ACPI_S_STATE:
/* Not reflexive, as we must domain_pause(). */
diff --git a/xen/include/asm-x86/hvm/domain.h b/xen/include/asm-x86/hvm/domain.h
index 460dd94..92dc5fb 100644
--- a/xen/include/asm-x86/hvm/domain.h
+++ b/xen/include/asm-x86/hvm/domain.h
@@ -36,14 +36,35 @@
#include <public/hvm/save.h>
struct hvm_ioreq_page {
- spinlock_t lock;
struct page_info *page;
void *va;
};
-struct hvm_domain {
+struct hvm_ioreq_vcpu {
+ struct list_head list_entry;
+ struct vcpu *vcpu;
+ evtchn_port_t ioreq_evtchn;
+};
+
+struct hvm_ioreq_server {
+ struct domain *domain;
+
+ /* Lock to serialize toolstack modifications */
+ spinlock_t lock;
+
+ /* Domain id of emulating domain */
+ domid_t domid;
struct hvm_ioreq_page ioreq;
- struct hvm_ioreq_page buf_ioreq;
+ struct list_head ioreq_vcpu_list;
+ struct hvm_ioreq_page bufioreq;
+
+ /* Lock to serialize access to buffered ioreq ring */
+ spinlock_t bufioreq_lock;
+ evtchn_port_t bufioreq_evtchn;
+};
+
+struct hvm_domain {
+ struct hvm_ioreq_server *ioreq_server;
struct pl_time pl_time;
@@ -106,3 +127,12 @@ struct hvm_domain {
#endif /* __ASM_X86_HVM_DOMAIN_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/include/asm-x86/hvm/vcpu.h b/xen/include/asm-x86/hvm/vcpu.h
index f34fa91..db37232 100644
--- a/xen/include/asm-x86/hvm/vcpu.h
+++ b/xen/include/asm-x86/hvm/vcpu.h
@@ -138,8 +138,6 @@ struct hvm_vcpu {
spinlock_t tm_lock;
struct list_head tm_list;
- int xen_port;
-
u8 flag_dr_dirty;
bool_t debug_state_latch;
bool_t single_step;
@@ -186,3 +184,13 @@ struct hvm_vcpu {
};
#endif /* __ASM_X86_HVM_VCPU_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
1.7.10.4
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