Page MenuHomeFreeBSD
Files F162598039

D21824.id62656.diff
No OneTemporary
Actions

D21824.id62656.diff
View Options

Index: sys/arm64/arm64/pmap.c
===================================================================
--- sys/arm64/arm64/pmap.c
+++ sys/arm64/arm64/pmap.c
@@ -4240,6 +4240,27 @@
return (count);
}
+/*
+ * Returns TRUE if the given page is mapped individually or as part of
+ * a 2mpage. Otherwise, returns FALSE.
+ */
+boolean_t
+pmap_page_is_mapped(vm_page_t m)
+{
+ struct rwlock *lock;
+ boolean_t rv;
+
+ if ((m->oflags & VPO_UNMANAGED) != 0)
+ return (FALSE);
+ lock = VM_PAGE_TO_PV_LIST_LOCK(m);
+ rw_rlock(lock);
+ rv = !TAILQ_EMPTY(&m->md.pv_list) ||
+ ((m->flags & PG_FICTITIOUS) == 0 &&
+ !TAILQ_EMPTY(&pa_to_pvh(VM_PAGE_TO_PHYS(m))->pv_list));
+ rw_runlock(lock);
+ return (rv);
+}
+
/*
* Destroy all managed, non-wired mappings in the given user-space
* pmap. This pmap cannot be active on any processor besides the
Index: sys/arm64/include/pmap.h
===================================================================
--- sys/arm64/include/pmap.h
+++ sys/arm64/include/pmap.h
@@ -150,6 +150,7 @@
void pmap_kremove(vm_offset_t);
void pmap_kremove_device(vm_offset_t, vm_size_t);
void *pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t ma);
+boolean_t pmap_page_is_mapped(vm_page_t m);
bool pmap_ps_enabled(pmap_t pmap);
void *pmap_mapdev(vm_offset_t, vm_size_t);
@@ -167,8 +168,6 @@
struct pcb *pmap_switch(struct thread *, struct thread *);
-#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
-
static inline int
pmap_vmspace_copy(pmap_t dst_pmap __unused, pmap_t src_pmap __unused)
{
Index: sys/riscv/include/pmap.h
===================================================================
--- sys/riscv/include/pmap.h
+++ sys/riscv/include/pmap.h
@@ -146,6 +146,7 @@
vm_paddr_t pmap_kextract(vm_offset_t va);
void pmap_kremove(vm_offset_t);
void pmap_kremove_device(vm_offset_t, vm_size_t);
+boolean_t pmap_page_is_mapped(vm_page_t m);
bool pmap_ps_enabled(pmap_t);
void *pmap_mapdev(vm_offset_t, vm_size_t);
@@ -159,8 +160,6 @@
bool pmap_get_tables(pmap_t, vm_offset_t, pd_entry_t **, pd_entry_t **,
pt_entry_t **);
-#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
-
int pmap_fault_fixup(pmap_t, vm_offset_t, vm_prot_t);
static inline int
Index: sys/riscv/riscv/pmap.c
===================================================================
--- sys/riscv/riscv/pmap.c
+++ sys/riscv/riscv/pmap.c
@@ -3541,6 +3541,27 @@
return (count);
}
+/*
+ * Returns TRUE if the given page is mapped individually or as part of
+ * a 2mpage. Otherwise, returns FALSE.
+ */
+boolean_t
+pmap_page_is_mapped(vm_page_t m)
+{
+ struct rwlock *lock;
+ boolean_t rv;
+
+ if ((m->oflags & VPO_UNMANAGED) != 0)
+ return (FALSE);
+ lock = VM_PAGE_TO_PV_LIST_LOCK(m);
+ rw_rlock(lock);
+ rv = !TAILQ_EMPTY(&m->md.pv_list) ||
+ ((m->flags & PG_FICTITIOUS) == 0 &&
+ !TAILQ_EMPTY(&pa_to_pvh(VM_PAGE_TO_PHYS(m))->pv_list));
+ rw_runlock(lock);
+ return (rv);
+}
+
static void
pmap_remove_pages_pv(pmap_t pmap, vm_page_t m, pv_entry_t pv,
struct spglist *free, bool superpage)

File Metadata

Mime Type
text/plain
Expires
Wed, Jul 15, 10:21 PM (1 h, 53 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
35116192
Default Alt Text
D21824.id62656.diff (2 KB)

Event Timeline