[PATCH v7 14/15] x86: switch to use domheap page for page tables

[Hongyan Xia <hx242@xxxxxxx>]

From: Hongyan Xia <hongyxia@xxxxxxxxxx>

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Signed-off-by: Hongyan Xia <hongyxia@xxxxxxxxxx>
---
 xen/arch/x86/mm.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 38cfa3ce25..16f1aa3344 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -4918,10 +4918,11 @@ mfn_t alloc_xen_pagetable_new(void)
 {
     if ( system_state != SYS_STATE_early_boot )
     {
-        void *ptr = alloc_xenheap_page();
 
-        BUG_ON(!hardware_domain && !ptr);
-        return ptr ? virt_to_mfn(ptr) : INVALID_MFN;
+        struct page_info *pg = alloc_domheap_page(NULL, 0);
+
+        BUG_ON(!hardware_domain && !pg);
+        return pg ? page_to_mfn(pg) : INVALID_MFN;
     }
 
     return alloc_boot_pages(1, 1);
@@ -4931,7 +4932,7 @@ mfn_t alloc_xen_pagetable_new(void)
 void free_xen_pagetable_new(mfn_t mfn)
 {
     if ( system_state != SYS_STATE_early_boot && !mfn_eq(mfn, INVALID_MFN) )
-        free_xenheap_page(mfn_to_virt(mfn_x(mfn)));
+        free_domheap_page(mfn_to_page(mfn));
 }
 
 void *alloc_map_clear_xen_pt(mfn_t *pmfn)
-- 
2.24.1.AMZN