[Xen-devel] [PATCH v2 2/5] xen: remove qemu_map_cache_unlock

[<stefano.stabellini@xxxxxxxxxxxxx>]

From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

There is no need for qemu_map_cache_unlock, just use
qemu_invalidate_entry instead.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 exec.c              |    2 +-
 xen-mapcache-stub.c |    4 ----
 xen-mapcache.c      |   33 ---------------------------------
 xen-mapcache.h      |    1 -
 4 files changed, 1 insertions(+), 39 deletions(-)

diff --git a/exec.c b/exec.c
index a6df2d6..01498d2 100644
--- a/exec.c
+++ b/exec.c
@@ -3126,7 +3126,7 @@ void qemu_put_ram_ptr(void *addr)
             xen_unmap_block(block->host, block->length);
             block->host = NULL;
         } else {
-            qemu_map_cache_unlock(addr);
+            qemu_invalidate_entry(addr);
         }
     }
 }
diff --git a/xen-mapcache-stub.c b/xen-mapcache-stub.c
index 7c14b3d..60f712b 100644
--- a/xen-mapcache-stub.c
+++ b/xen-mapcache-stub.c
@@ -22,10 +22,6 @@ uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, 
target_phys_addr_t size, u
     return qemu_get_ram_ptr(phys_addr);
 }
 
-void qemu_map_cache_unlock(void *buffer)
-{
-}
-
 ram_addr_t qemu_ram_addr_from_mapcache(void *ptr)
 {
     return -1;
diff --git a/xen-mapcache.c b/xen-mapcache.c
index 90fbd49..57fe24d 100644
--- a/xen-mapcache.c
+++ b/xen-mapcache.c
@@ -230,39 +230,6 @@ uint8_t *qemu_map_cache(target_phys_addr_t phys_addr, 
target_phys_addr_t size, u
     return mapcache->last_address_vaddr + address_offset;
 }
 
-void qemu_map_cache_unlock(void *buffer)
-{
-    MapCacheEntry *entry = NULL, *pentry = NULL;
-    MapCacheRev *reventry;
-    target_phys_addr_t paddr_index;
-    int found = 0;
-
-    QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
-        if (reventry->vaddr_req == buffer) {
-            paddr_index = reventry->paddr_index;
-            found = 1;
-            break;
-        }
-    }
-    if (!found) {
-        return;
-    }
-    QTAILQ_REMOVE(&mapcache->locked_entries, reventry, next);
-    qemu_free(reventry);
-
-    entry = &mapcache->entry[paddr_index % mapcache->nr_buckets];
-    while (entry && entry->paddr_index != paddr_index) {
-        pentry = entry;
-        entry = entry->next;
-    }
-    if (!entry) {
-        return;
-    }
-    if (entry->lock > 0) {
-        entry->lock--;
-    }
-}
-
 ram_addr_t qemu_ram_addr_from_mapcache(void *ptr)
 {
     MapCacheEntry *entry = NULL, *pentry = NULL;
diff --git a/xen-mapcache.h b/xen-mapcache.h
index 339444c..b89b8f9 100644
--- a/xen-mapcache.h
+++ b/xen-mapcache.h
@@ -14,7 +14,6 @@
 
 void     qemu_map_cache_init(void);
 uint8_t  *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t 
size, uint8_t lock);
-void     qemu_map_cache_unlock(void *phys_addr);
 ram_addr_t qemu_ram_addr_from_mapcache(void *ptr);
 void     qemu_invalidate_entry(uint8_t *buffer);
 void     qemu_invalidate_map_cache(void);
-- 
1.7.2.3


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