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[Xen-devel] [v4][PATCH 13/19] tools/libxc: check to set args.mmio_size before call xc_hvm_build



After commit 5dff8e9eedc7, "libxc/libxl: fill xc_hvm_build_args in
libxl" is introduced, we won't check to set args.mmio_size inside
xc_hvm_build as before. So instead, we need to do this before call
that.

CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CC: Ian Campbell <ian.campbell@xxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxx>
---
v4:

* Separate this from currenpt patch #14 since this is specific to xc.

 tools/libxc/xc_hvm_build_x86.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/libxc/xc_hvm_build_x86.c b/tools/libxc/xc_hvm_build_x86.c
index 003ea06..7343e87 100644
--- a/tools/libxc/xc_hvm_build_x86.c
+++ b/tools/libxc/xc_hvm_build_x86.c
@@ -754,6 +754,8 @@ int xc_hvm_build_target_mem(xc_interface *xch,
     args.mem_size = (uint64_t)memsize << 20;
     args.mem_target = (uint64_t)target << 20;
     args.image_file_name = image_name;
+    if ( args.mmio_size == 0 )
+        args.mmio_size = HVM_BELOW_4G_MMIO_LENGTH;
 
     return xc_hvm_build(xch, domid, &args);
 }
-- 
1.9.1


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