[Xen-devel] [RFC Patch v3 03/18] don't zero out ioreq page

[Wen Congyang <wency@xxxxxxxxxxxxxx>]

ioreq page may contain some pending I/O requests, and we need to
handle the pending I/O req after migration.

TODO:
1. update qemu to handle the pending I/O req

Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
Cc: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
 tools/libxc/xc_domain_restore.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/libxc/xc_domain_restore.c b/tools/libxc/xc_domain_restore.c
index fb4ddfc..21a6177 100644
--- a/tools/libxc/xc_domain_restore.c
+++ b/tools/libxc/xc_domain_restore.c
@@ -2310,8 +2310,7 @@ int xc_domain_restore(xc_interface *xch, int io_fd, 
uint32_t dom,
     }
 
     /* These comms pages need to be zeroed at the start of day */
-    if ( xc_clear_domain_page(xch, dom, tailbuf.u.hvm.magicpfns[0]) ||
-         xc_clear_domain_page(xch, dom, tailbuf.u.hvm.magicpfns[1]) ||
+    if ( xc_clear_domain_page(xch, dom, tailbuf.u.hvm.magicpfns[1]) ||
          xc_clear_domain_page(xch, dom, tailbuf.u.hvm.magicpfns[2]) )
     {
         PERROR("error zeroing magic pages");
-- 
1.9.3


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