[Xen-changelog] [xen staging] dom0/pvh: change the order of the MMCFG initialization

[patchbot@xxxxxxx]

commit 4830902b043f2a28d18bf611c5f9112cf885dd30
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Fri Aug 17 13:54:02 2018 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Aug 17 13:54:02 2018 +0200

    dom0/pvh: change the order of the MMCFG initialization
    
    So it's done before the iommu is initialized. This is required in
    order to be able to fetch the MMCFG regions from the domain struct.
    
    No functional change.
    
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/hvm/dom0_build.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c
index f0cd63b1ec..5065729106 100644
--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -1100,6 +1100,13 @@ int __init dom0_construct_pvh(struct domain *d, const 
module_t *image,
         return rc;
     }
 
+    /*
+     * NB: MMCFG initialization needs to be performed before iommu
+     * initialization so the iommu code can fetch the MMCFG regions used by the
+     * domain.
+     */
+    pvh_setup_mmcfg(d);
+
     iommu_hwdom_init(d);
 
     rc = pvh_load_kernel(d, image, image_headroom, initrd, 
bootstrap_map(image),
@@ -1124,8 +1131,6 @@ int __init dom0_construct_pvh(struct domain *d, const 
module_t *image,
         return rc;
     }
 
-    pvh_setup_mmcfg(d);
-
     printk("WARNING: PVH is an experimental mode with limited 
functionality\n");
     return 0;
 }
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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