# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID 3428d58a85e1a4a618e3f6e7139e4dcf1f9cad19
# Parent fab3e2747dc2322f0f2fd9ec4b25a835867f4f5d
# Parent 56a2232377f1b3684da6e95a07f9854e40bc4ba7
merge?
diff -r fab3e2747dc2 -r 3428d58a85e1
linux-2.6-xen-sparse/arch/xen/kernel/gnttab.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/gnttab.c Thu Aug 25 14:41:06 2005
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/gnttab.c Thu Aug 25 14:41:52 2005
@@ -34,9 +34,11 @@
EXPORT_SYMBOL(gnttab_grant_foreign_access);
+EXPORT_SYMBOL(gnttab_end_foreign_access_ref);
EXPORT_SYMBOL(gnttab_end_foreign_access);
EXPORT_SYMBOL(gnttab_query_foreign_access);
EXPORT_SYMBOL(gnttab_grant_foreign_transfer);
+EXPORT_SYMBOL(gnttab_end_foreign_transfer_ref);
EXPORT_SYMBOL(gnttab_end_foreign_transfer);
EXPORT_SYMBOL(gnttab_alloc_grant_references);
EXPORT_SYMBOL(gnttab_free_grant_references);
@@ -160,7 +162,7 @@
}
void
-gnttab_end_foreign_access(grant_ref_t ref, int readonly)
+gnttab_end_foreign_access_ref(grant_ref_t ref, int readonly)
{
u16 flags, nflags;
@@ -170,7 +172,12 @@
printk(KERN_ALERT "WARNING: g.e. still in use!\n");
}
while ( (nflags = synch_cmpxchg(&shared[ref].flags, flags, 0)) != flags );
-
+}
+
+void
+gnttab_end_foreign_access(grant_ref_t ref, int readonly)
+{
+ gnttab_end_foreign_access_ref(ref, readonly);
put_free_entry(ref);
}
@@ -201,20 +208,13 @@
}
unsigned long
-gnttab_end_foreign_transfer(grant_ref_t ref)
+gnttab_end_foreign_transfer_ref(grant_ref_t ref)
{
unsigned long frame = 0;
u16 flags;
flags = shared[ref].flags;
-#ifdef CONFIG_XEN_NETDEV_GRANT_RX
- /*
- * But can't flags == (GTF_accept_transfer | GTF_transfer_completed)
- * if gnttab_donate executes without interruption???
- */
-#else
- ASSERT(flags == (GTF_accept_transfer | GTF_transfer_committed));
-#endif
+
/*
* If a transfer is committed then wait for the frame address to appear.
* Otherwise invalidate the grant entry against future use.
@@ -224,8 +224,14 @@
while ( unlikely((frame = shared[ref].frame) == 0) )
cpu_relax();
+ return frame;
+}
+
+unsigned long
+gnttab_end_foreign_transfer(grant_ref_t ref)
+{
+ unsigned long frame = gnttab_end_foreign_transfer_ref(ref);
put_free_entry(ref);
-
return frame;
}
diff -r fab3e2747dc2 -r 3428d58a85e1
linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c
--- a/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c Thu Aug 25
14:41:06 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c Thu Aug 25
14:41:52 2005
@@ -364,7 +364,7 @@
"still in use by backend domain.\n");
goto out;
}
- gnttab_end_foreign_access(grant_tx_ref[id], GNTMAP_readonly);
+ gnttab_end_foreign_access_ref(grant_tx_ref[id], GNTMAP_readonly);
gnttab_release_grant_reference(&gref_tx_head, grant_tx_ref[id]);
grant_tx_ref[id] = GRANT_INVALID_REF;
#endif
@@ -650,7 +650,7 @@
#ifdef CONFIG_XEN_NETDEV_GRANT_RX
ref = grant_rx_ref[rx->id];
grant_rx_ref[rx->id] = GRANT_INVALID_REF;
- mfn = gnttab_end_foreign_transfer(ref);
+ mfn = gnttab_end_foreign_transfer_ref(ref);
gnttab_release_grant_reference(&gref_rx_head, ref);
#endif
diff -r fab3e2747dc2 -r 3428d58a85e1
linux-2.6-xen-sparse/include/asm-xen/gnttab.h
--- a/linux-2.6-xen-sparse/include/asm-xen/gnttab.h Thu Aug 25 14:41:06 2005
+++ b/linux-2.6-xen-sparse/include/asm-xen/gnttab.h Thu Aug 25 14:41:52 2005
@@ -30,10 +30,12 @@
int gnttab_grant_foreign_access(domid_t domid, unsigned long frame,
int readonly);
+void gnttab_end_foreign_access_ref(grant_ref_t ref, int readonly);
void gnttab_end_foreign_access(grant_ref_t ref, int readonly);
int gnttab_grant_foreign_transfer(domid_t domid, unsigned long pfn);
+unsigned long gnttab_end_foreign_transfer_ref(grant_ref_t ref);
unsigned long gnttab_end_foreign_transfer(grant_ref_t ref);
int gnttab_query_foreign_access(grant_ref_t ref);
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