diff mbox series

[2/6] x86 / p2m: remove page_list check in p2m_alloc_table

Message ID 20200228132749.2929-3-pdurrant@amazon.com (mailing list archive)
State New, archived
Headers show
Series remove one more shared xenheap page: shared_info | expand

Commit Message

Paul Durrant Feb. 28, 2020, 1:27 p.m. UTC 
There does not seem to be any justification for refusing to create the
domain's p2m table simply because it may have assigned pages. Particularly
it prevents the prior allocation of PGC_extra pages.

Signed-off-by: Paul Durrant <pdurrant@amazon.com>
---
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: George Dunlap <george.dunlap@citrix.com>
Cc: Wei Liu <wl@xen.org>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>

v2:
 - New in v2
---
 xen/arch/x86/mm/p2m.c | 8 --------
 1 file changed, 8 deletions(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index 3719deae77..9fd4b115be 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -695,14 +695,6 @@  int p2m_alloc_table(struct p2m_domain *p2m)
 
     p2m_lock(p2m);
 
-    if ( p2m_is_hostp2m(p2m)
-         && !page_list_empty(&d->page_list) )
-    {
-        P2M_ERROR("dom %d already has memory allocated\n", d->domain_id);
-        p2m_unlock(p2m);
-        return -EINVAL;
-    }
-
     if ( pagetable_get_pfn(p2m_get_pagetable(p2m)) != 0 )
     {
         P2M_ERROR("p2m already allocated for this domain\n");