diff mbox series

[4/5] x86_64/mm: map and unmap page tables in destroy_compat_m2p_mapping

Message ID 67b6f30fb36b44f26aba8a5039d5b551addf206d.1584955616.git.hongyxia@amazon.com (mailing list archive)
State Superseded
Headers show
Series use new API for Xen page tables | expand

Commit Message

Hongyan Xia March 23, 2020, 9:41 a.m. UTC 
From: Wei Liu <wei.liu2@citrix.com>

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Hongyan Xia <hongyxia@amazon.com>
---
 xen/arch/x86/x86_64/mm.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c
index 2680173fab..71c84ac593 100644
--- a/xen/arch/x86/x86_64/mm.c
+++ b/xen/arch/x86/x86_64/mm.c
@@ -235,11 +235,13 @@  static void destroy_compat_m2p_mapping(struct mem_hotadd_info *info)
     if ( emap > ((RDWR_COMPAT_MPT_VIRT_END - RDWR_COMPAT_MPT_VIRT_START) >> 2) )
         emap = (RDWR_COMPAT_MPT_VIRT_END - RDWR_COMPAT_MPT_VIRT_START) >> 2;
 
-    l3_ro_mpt = l4e_to_l3e(idle_pg_table[l4_table_offset(HIRO_COMPAT_MPT_VIRT_START)]);
+    l3_ro_mpt = map_l3t_from_l4e(idle_pg_table[
+                    l4_table_offset(HIRO_COMPAT_MPT_VIRT_START)]);
 
     ASSERT(l3e_get_flags(l3_ro_mpt[l3_table_offset(HIRO_COMPAT_MPT_VIRT_START)]) & _PAGE_PRESENT);
 
-    l2_ro_mpt = l3e_to_l2e(l3_ro_mpt[l3_table_offset(HIRO_COMPAT_MPT_VIRT_START)]);
+    l2_ro_mpt = map_l2t_from_l3e(
+                    l3_ro_mpt[l3_table_offset(HIRO_COMPAT_MPT_VIRT_START)]);
 
     for ( i = smap; i < emap; )
     {
@@ -261,6 +263,9 @@  static void destroy_compat_m2p_mapping(struct mem_hotadd_info *info)
         i += 1UL << (L2_PAGETABLE_SHIFT - 2);
     }
 
+    UNMAP_DOMAIN_PAGE(l2_ro_mpt);
+    UNMAP_DOMAIN_PAGE(l3_ro_mpt);
+
     return;
 }