diff mbox series

[v4,4/6] x86 / ioreq: use a MEMF_no_refcount allocation for server pages...

Message ID 20200309093511.1727-5-paul@xen.org (mailing list archive)
State Superseded
Headers show
Series remove one more shared xenheap page: shared_info | expand

Commit Message

Paul Durrant March 9, 2020, 9:35 a.m. UTC 
From: Paul Durrant <pdurrant@amazon.com>

... now that it is safe to assign them.

This avoids relying on libxl (or whatever toolstack is in use) setting
max_pages up with sufficient 'slop' to allow all necessary ioreq server
pages to be allocated.

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

v2:
 - New in v2
---
 xen/arch/x86/hvm/ioreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/hvm/ioreq.c b/xen/arch/x86/hvm/ioreq.c
index f8a5c81546..648ef9137f 100644
--- a/xen/arch/x86/hvm/ioreq.c
+++ b/xen/arch/x86/hvm/ioreq.c
@@ -375,7 +375,7 @@  static int hvm_alloc_ioreq_mfn(struct hvm_ioreq_server *s, bool buf)
         return 0;
     }
 
-    page = alloc_domheap_page(s->target, 0);
+    page = alloc_domheap_page(s->target, MEMF_no_refcount);
 
     if ( !page )
         return -ENOMEM;