# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID 37141c3a3d39956ad5faf2d4e2a91276eaca557b
# Parent 6edf8b33e7d117b86a08b0ac60c54b5abaf3b014
[XEN] Remove unnecessary shadow_mode_refcount() code from PV mm code.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
xen/arch/x86/mm.c | 21 ---------------------
1 files changed, 21 deletions(-)
diff -r 6edf8b33e7d1 -r 37141c3a3d39 xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Mon Dec 11 11:57:36 2006 +0000
+++ b/xen/arch/x86/mm.c Mon Dec 11 15:06:53 2006 +0000
@@ -435,15 +435,6 @@ int map_ldt_shadow_page(unsigned int off
return 0;
okay = get_page_and_type(mfn_to_page(mfn), d, PGT_ldt_page);
-
- if ( !okay && unlikely(shadow_mode_refcounts(d)) )
- {
- shadow_lock(d);
- shadow_remove_write_access(d->vcpu[0], _mfn(mfn), 0, 0);
- okay = get_page_and_type(mfn_to_page(mfn), d, PGT_ldt_page);
- shadow_unlock(d);
- }
-
if ( unlikely(!okay) )
return 0;
@@ -508,8 +499,6 @@ get_linear_pagetable(
unsigned long x, y;
struct page_info *page;
unsigned long pfn;
-
- ASSERT( !shadow_mode_refcounts(d) );
if ( (root_get_flags(re) & _PAGE_RW) )
{
@@ -821,8 +810,6 @@ static int alloc_l1_table(struct page_in
l1_pgentry_t *pl1e;
int i;
- ASSERT(!shadow_mode_refcounts(d));
-
pl1e = map_domain_page(pfn);
for ( i = 0; i < L1_PAGETABLE_ENTRIES; i++ )
@@ -873,8 +860,6 @@ static int create_pae_xen_mappings(l3_pg
* 2. Cannot appear in another page table's L3:
* a. alloc_l3_table() calls this function and this check will fail
* b. mod_l3_entry() disallows updates to slot 3 in an existing table
- *
- * XXX -- this needs revisiting for shadow_mode_refcount()==true...
*/
page = l3e_get_page(l3e3);
BUG_ON(page->u.inuse.type_info & PGT_pinned);
@@ -959,8 +944,6 @@ static int alloc_l2_table(struct page_in
l2_pgentry_t *pl2e;
int i;
- ASSERT(!shadow_mode_refcounts(d));
-
pl2e = map_domain_page(pfn);
for ( i = 0; i < L2_PAGETABLE_ENTRIES; i++ )
@@ -1008,8 +991,6 @@ static int alloc_l3_table(struct page_in
l3_pgentry_t *pl3e;
int i;
- ASSERT(!shadow_mode_refcounts(d));
-
#ifdef CONFIG_X86_PAE
/*
* PAE pgdirs above 4GB are unacceptable if the guest does not understand
@@ -1074,8 +1055,6 @@ static int alloc_l4_table(struct page_in
unsigned long pfn = page_to_mfn(page);
l4_pgentry_t *pl4e = page_to_virt(page);
int i;
-
- ASSERT(!shadow_mode_refcounts(d));
for ( i = 0; i < L4_PAGETABLE_ENTRIES; i++ )
{
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