|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 Altp2m cleanup 3/3] Making altp2m struct dynamically allocated.
Ravi Sahita's dynamically allocated altp2m structs
Signed-off-by: Paul Lai <paul.c.lai@xxxxxxxxx>
Reviewed-by: Ravi Sahita <ravi.sahita@xxxxxxxxx>
---
xen/arch/x86/hvm/hvm.c | 8 +++---
xen/arch/x86/hvm/vmx/vmx.c | 2 +-
xen/arch/x86/mm/altp2m.c | 18 ++++++-------
xen/arch/x86/mm/mm-locks.h | 4 +--
xen/arch/x86/mm/p2m-ept.c | 8 +++---
xen/arch/x86/mm/p2m.c | 61 ++++++++++++++++++++++++--------------------
xen/include/asm-x86/altp2m.h | 7 ++++-
xen/include/asm-x86/domain.h | 5 +---
xen/include/asm-x86/p2m.h | 9 ++++++-
9 files changed, 69 insertions(+), 53 deletions(-)
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 69daa29..8a824f9 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -5239,7 +5239,7 @@ static int do_altp2m_op(
if ( (a.cmd != HVMOP_altp2m_get_domain_state) &&
(a.cmd != HVMOP_altp2m_set_domain_state) &&
- !d->arch.altp2m_active )
+ !altp2m_active(d) )
{
rc = -EOPNOTSUPP;
goto out;
@@ -5273,11 +5273,11 @@ static int do_altp2m_op(
break;
}
- ostate = d->arch.altp2m_active;
- d->arch.altp2m_active = !!a.u.domain_state.state;
+ ostate = altp2m_active(d);
+ set_altp2m_active(d, !!a.u.domain_state.state);
/* If the alternate p2m state has changed, handle appropriately */
- if ( d->arch.altp2m_active != ostate &&
+ if ( altp2m_active(d) != ostate &&
(ostate || !(rc = p2m_init_altp2m_by_id(d, 0))) )
{
for_each_vcpu( d, v )
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index 670d7dc..b522578 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -2017,7 +2017,7 @@ static void vmx_vcpu_update_vmfunc_ve(struct vcpu *v)
{
v->arch.hvm_vmx.secondary_exec_control |= mask;
__vmwrite(VM_FUNCTION_CONTROL, VMX_VMFUNC_EPTP_SWITCHING);
- __vmwrite(EPTP_LIST_ADDR, virt_to_maddr(d->arch.altp2m_eptp));
+ __vmwrite(EPTP_LIST_ADDR, virt_to_maddr(d->arch.altp2m->altp2m_eptp));
if ( cpu_has_vmx_virt_exceptions )
{
diff --git a/xen/arch/x86/mm/altp2m.c b/xen/arch/x86/mm/altp2m.c
index ec812dd..23f995c 100644
--- a/xen/arch/x86/mm/altp2m.c
+++ b/xen/arch/x86/mm/altp2m.c
@@ -73,23 +73,23 @@ hvm_altp2m_init( struct domain *d)
unsigned int i = 0;
/* Init alternate p2m data. */
- if ( (d->arch.altp2m_eptp = alloc_xenheap_page()) == NULL )
+ if ( (d->arch.altp2m->altp2m_eptp = alloc_xenheap_page()) == NULL )
{
rc = -ENOMEM;
goto out;
}
for ( i = 0; i < MAX_EPTP; i++ )
- d->arch.altp2m_eptp[i] = INVALID_MFN;
+ d->arch.altp2m->altp2m_eptp[i] = INVALID_MFN;
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- rc = p2m_alloc_table(d->arch.altp2m_p2m[i]);
+ rc = p2m_alloc_table(d->arch.altp2m->altp2m_p2m[i]);
if ( rc != 0 )
goto out;
}
- d->arch.altp2m_active = 0;
+ set_altp2m_active(d, 0);
out:
return rc;
}
@@ -98,16 +98,16 @@ void
hvm_altp2m_teardown( struct domain *d)
{
unsigned int i = 0;
- d->arch.altp2m_active = 0;
+ set_altp2m_active(d, 0);
- if ( d->arch.altp2m_eptp )
+ if ( d->arch.altp2m->altp2m_eptp )
{
- free_xenheap_page(d->arch.altp2m_eptp);
- d->arch.altp2m_eptp = NULL;
+ free_xenheap_page(d->arch.altp2m->altp2m_eptp);
+ d->arch.altp2m->altp2m_eptp = NULL;
}
for ( i = 0; i < MAX_ALTP2M; i++ )
- p2m_teardown(d->arch.altp2m_p2m[i]);
+ p2m_teardown(d->arch.altp2m->altp2m_p2m[i]);
}
/*
diff --git a/xen/arch/x86/mm/mm-locks.h b/xen/arch/x86/mm/mm-locks.h
index 086c8bb..4d17b0a 100644
--- a/xen/arch/x86/mm/mm-locks.h
+++ b/xen/arch/x86/mm/mm-locks.h
@@ -251,8 +251,8 @@ declare_mm_rwlock(p2m);
*/
declare_mm_lock(altp2mlist)
-#define altp2m_list_lock(d) mm_lock(altp2mlist, &(d)->arch.altp2m_list_lock)
-#define altp2m_list_unlock(d) mm_unlock(&(d)->arch.altp2m_list_lock)
+#define altp2m_list_lock(d) mm_lock(altp2mlist,
&(d)->arch.altp2m->altp2m_list_lock)
+#define altp2m_list_unlock(d) mm_unlock(&(d)->arch.altp2m->altp2m_list_lock)
/* P2M lock (per-altp2m-table)
*
diff --git a/xen/arch/x86/mm/p2m-ept.c b/xen/arch/x86/mm/p2m-ept.c
index b68806d..3fa4923 100644
--- a/xen/arch/x86/mm/p2m-ept.c
+++ b/xen/arch/x86/mm/p2m-ept.c
@@ -1331,14 +1331,14 @@ void setup_ept_dump(void)
void p2m_init_altp2m_ept_helper( struct domain *d, unsigned int i)
{
- struct p2m_domain *p2m = d->arch.altp2m_p2m[i];
+ struct p2m_domain *p2m = d->arch.altp2m->altp2m_p2m[i];
struct ept_data *ept;
p2m->min_remapped_gfn = INVALID_GFN;
p2m->max_remapped_gfn = 0;
ept = &p2m->ept;
ept->asr = pagetable_get_pfn(p2m_get_pagetable(p2m));
- d->arch.altp2m_eptp[i] = ept_get_eptp(ept);
+ d->arch.altp2m->altp2m_eptp[i] = ept_get_eptp(ept);
}
unsigned int p2m_find_altp2m_by_eptp(struct domain *d, uint64_t eptp)
@@ -1351,10 +1351,10 @@ unsigned int p2m_find_altp2m_by_eptp(struct domain *d,
uint64_t eptp)
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- if ( d->arch.altp2m_eptp[i] == INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[i] == INVALID_MFN )
continue;
- p2m = d->arch.altp2m_p2m[i];
+ p2m = d->arch.altp2m->altp2m_p2m[i];
ept = &p2m->ept;
if ( eptp == ept_get_eptp(ept) )
diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index b48cf4b..e207355 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -193,12 +193,15 @@ static void p2m_teardown_altp2m(struct domain *d)
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- if ( !d->arch.altp2m_p2m[i] )
+ if ( !d->arch.altp2m->altp2m_p2m[i] )
continue;
- p2m = d->arch.altp2m_p2m[i];
+ p2m = d->arch.altp2m->altp2m_p2m[i];
p2m_free_one(p2m);
- d->arch.altp2m_p2m[i] = NULL;
+ d->arch.altp2m->altp2m_p2m[i] = NULL;
}
+
+ if ( d->arch.altp2m )
+ xfree(d->arch.altp2m);
}
static int p2m_init_altp2m(struct domain *d)
@@ -206,10 +209,14 @@ static int p2m_init_altp2m(struct domain *d)
unsigned int i;
struct p2m_domain *p2m;
- mm_lock_init(&d->arch.altp2m_list_lock);
+ d->arch.altp2m = xzalloc(struct altp2m_domain);
+ if ( d->arch.altp2m == NULL )
+ return -ENOMEM;
+
+ mm_lock_init(&d->arch.altp2m->altp2m_list_lock);
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- d->arch.altp2m_p2m[i] = p2m = p2m_init_one(d);
+ d->arch.altp2m->altp2m_p2m[i] = p2m = p2m_init_one(d);
if ( p2m == NULL )
{
p2m_teardown_altp2m(d);
@@ -1838,10 +1845,10 @@ long p2m_set_mem_access(struct domain *d, gfn_t gfn,
uint32_t nr,
if ( altp2m_idx )
{
if ( altp2m_idx >= MAX_ALTP2M ||
- d->arch.altp2m_eptp[altp2m_idx] == INVALID_MFN )
+ d->arch.altp2m->altp2m_eptp[altp2m_idx] == INVALID_MFN )
return -EINVAL;
- ap2m = d->arch.altp2m_p2m[altp2m_idx];
+ ap2m = d->arch.altp2m->altp2m_p2m[altp2m_idx];
}
switch ( access )
@@ -2280,7 +2287,7 @@ bool_t p2m_switch_vcpu_altp2m_by_id(struct vcpu *v,
unsigned int idx)
altp2m_list_lock(d);
- if ( d->arch.altp2m_eptp[idx] != INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[idx] != INVALID_MFN )
{
if ( idx != vcpu_altp2m(v).p2midx )
{
@@ -2365,11 +2372,11 @@ void p2m_flush_altp2m(struct domain *d)
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- p2m_flush_table(d->arch.altp2m_p2m[i]);
+ p2m_flush_table(d->arch.altp2m->altp2m_p2m[i]);
/* Uninit and reinit ept to force TLB shootdown */
- ept_p2m_uninit(d->arch.altp2m_p2m[i]);
- ept_p2m_init(d->arch.altp2m_p2m[i]);
- d->arch.altp2m_eptp[i] = INVALID_MFN;
+ ept_p2m_uninit(d->arch.altp2m->altp2m_p2m[i]);
+ ept_p2m_init(d->arch.altp2m->altp2m_p2m[i]);
+ d->arch.altp2m->altp2m_eptp[i] = INVALID_MFN;
}
altp2m_list_unlock(d);
@@ -2384,7 +2391,7 @@ int p2m_init_altp2m_by_id(struct domain *d, unsigned int
idx)
altp2m_list_lock(d);
- if ( d->arch.altp2m_eptp[idx] == INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[idx] == INVALID_MFN )
{
p2m_init_altp2m_ept_helper(d, idx);
rc = 0;
@@ -2403,7 +2410,7 @@ int p2m_init_next_altp2m(struct domain *d, uint16_t *idx)
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- if ( d->arch.altp2m_eptp[i] != INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[i] != INVALID_MFN )
continue;
p2m_init_altp2m_ept_helper(d, i);
@@ -2429,17 +2436,17 @@ int p2m_destroy_altp2m_by_id(struct domain *d, unsigned
int idx)
altp2m_list_lock(d);
- if ( d->arch.altp2m_eptp[idx] != INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[idx] != INVALID_MFN )
{
- p2m = d->arch.altp2m_p2m[idx];
+ p2m = d->arch.altp2m->altp2m_p2m[idx];
if ( !_atomic_read(p2m->active_vcpus) )
{
- p2m_flush_table(d->arch.altp2m_p2m[idx]);
+ p2m_flush_table(d->arch.altp2m->altp2m_p2m[idx]);
/* Uninit and reinit ept to force TLB shootdown */
- ept_p2m_uninit(d->arch.altp2m_p2m[idx]);
- ept_p2m_init(d->arch.altp2m_p2m[idx]);
- d->arch.altp2m_eptp[idx] = INVALID_MFN;
+ ept_p2m_uninit(d->arch.altp2m->altp2m_p2m[idx]);
+ ept_p2m_init(d->arch.altp2m->altp2m_p2m[idx]);
+ d->arch.altp2m->altp2m_eptp[idx] = INVALID_MFN;
rc = 0;
}
}
@@ -2463,7 +2470,7 @@ int p2m_switch_domain_altp2m_by_id(struct domain *d,
unsigned int idx)
altp2m_list_lock(d);
- if ( d->arch.altp2m_eptp[idx] != INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[idx] != INVALID_MFN )
{
for_each_vcpu( d, v )
if ( idx != vcpu_altp2m(v).p2midx )
@@ -2494,11 +2501,11 @@ int p2m_change_altp2m_gfn(struct domain *d, unsigned
int idx,
unsigned int page_order;
int rc = -EINVAL;
- if ( idx >= MAX_ALTP2M || d->arch.altp2m_eptp[idx] == INVALID_MFN )
+ if ( idx >= MAX_ALTP2M || d->arch.altp2m->altp2m_eptp[idx] == INVALID_MFN )
return rc;
hp2m = p2m_get_hostp2m(d);
- ap2m = d->arch.altp2m_p2m[idx];
+ ap2m = d->arch.altp2m->altp2m_p2m[idx];
p2m_lock(ap2m);
@@ -2589,10 +2596,10 @@ void p2m_altp2m_propagate_change(struct domain *d,
gfn_t gfn,
for ( i = 0; i < MAX_ALTP2M; i++ )
{
- if ( d->arch.altp2m_eptp[i] == INVALID_MFN )
+ if ( d->arch.altp2m->altp2m_eptp[i] == INVALID_MFN )
continue;
- p2m = d->arch.altp2m_p2m[i];
+ p2m = d->arch.altp2m->altp2m_p2m[i];
m = get_gfn_type_access(p2m, gfn_x(gfn), &t, &a, 0, NULL);
/* Check for a dropped page that may impact this altp2m */
@@ -2613,10 +2620,10 @@ void p2m_altp2m_propagate_change(struct domain *d,
gfn_t gfn,
for ( i = 0; i < MAX_ALTP2M; i++ )
{
if ( i == last_reset_idx ||
- d->arch.altp2m_eptp[i] == INVALID_MFN )
+ d->arch.altp2m->altp2m_eptp[i] == INVALID_MFN )
continue;
- p2m = d->arch.altp2m_p2m[i];
+ p2m = d->arch.altp2m->altp2m_p2m[i];
p2m_lock(p2m);
p2m_reset_altp2m(p2m);
p2m_unlock(p2m);
diff --git a/xen/include/asm-x86/altp2m.h b/xen/include/asm-x86/altp2m.h
index a236ed7..a2e6740 100644
--- a/xen/include/asm-x86/altp2m.h
+++ b/xen/include/asm-x86/altp2m.h
@@ -24,7 +24,12 @@
/* Alternate p2m HVM on/off per domain */
static inline bool_t altp2m_active(const struct domain *d)
{
- return d->arch.altp2m_active;
+ return d->arch.altp2m->altp2m_active;
+}
+
+static inline void set_altp2m_active(const struct domain *d, bool_t v)
+{
+ d->arch.altp2m->altp2m_active = v;
}
/* Alternate p2m VCPU */
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 783fa4f..5ae4975 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -320,10 +320,7 @@ struct arch_domain
mm_lock_t nested_p2m_lock;
/* altp2m: allow multiple copies of host p2m */
- bool_t altp2m_active;
- struct p2m_domain *altp2m_p2m[MAX_ALTP2M];
- mm_lock_t altp2m_list_lock;
- uint64_t *altp2m_eptp;
+ struct altp2m_domain *altp2m;
/* NB. protected by d->event_lock and by irq_desc[irq].lock */
struct radix_tree_root irq_pirq;
diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h
index d7c8c12..f3f9710 100644
--- a/xen/include/asm-x86/p2m.h
+++ b/xen/include/asm-x86/p2m.h
@@ -338,6 +338,13 @@ struct p2m_domain {
};
};
+struct altp2m_domain {
+ bool_t altp2m_active;
+ struct p2m_domain *altp2m_p2m[MAX_ALTP2M];
+ mm_lock_t altp2m_list_lock;
+ uint64_t *altp2m_eptp;
+};
+
/* get host p2m table */
#define p2m_get_hostp2m(d) ((d)->arch.p2m)
@@ -776,7 +783,7 @@ static inline struct p2m_domain *p2m_get_altp2m(struct vcpu
*v)
BUG_ON(index >= MAX_ALTP2M);
- return v->domain->arch.altp2m_p2m[index];
+ return v->domain->arch.altp2m->altp2m_p2m[index];
}
/* Switch alternate p2m for a single vcpu */
--
2.7.4
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |