From: Florin Coras <fcoras@cisco.com>
Date: Wed, 6 Jan 2021 07:15:49 +0000 (-0800)
Subject: svm: force fixed memfd mapping if va provided
X-Git-Tag: v21.10-rc0~745
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F39%2F30639%2F5;p=vpp.git

svm: force fixed memfd mapping if va provided

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I6a2cc596cf0b7f29d3ae1c05b1bb6b748b558175
---

diff --git a/src/svm/ssvm.c b/src/svm/ssvm.c
index 1a677fc5c62..f93f40d0526 100644
--- a/src/svm/ssvm.c
+++ b/src/svm/ssvm.c
@@ -304,9 +304,6 @@ ssvm_client_init_memfd (ssvm_private_t * memfd)
       return SSVM_API_ERROR_MMAP;
     }
 
-  if (memfd->requested_va)
-    mmap_flags |= MAP_FIXED;
-
   /*
    * Map the segment once, to look at the shared header
    */
@@ -324,6 +321,9 @@ ssvm_client_init_memfd (ssvm_private_t * memfd)
   memfd->ssvm_size = sh->ssvm_size;
   munmap (sh, page_size);
 
+  if (memfd->requested_va)
+    mmap_flags |= MAP_FIXED;
+
   /*
    * Remap the segment at the 'right' address
    */