[Xen-changelog] [xen staging] AMD/IOMMU: adjust IOMMU list head initialization

[patchbot@xxxxxxx]

commit f6c1247184b6a5cfa57491f0ec4483896789fda6
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri May 17 14:43:43 2019 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri May 17 14:43:43 2019 +0200

    AMD/IOMMU: adjust IOMMU list head initialization
    
    Do this statically, which will allow accessing the (empty) list even
    without having come through acpi_ivrs_init().
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/drivers/passthrough/amd/iommu_init.c    | 2 +-
 xen/drivers/passthrough/amd/pci_amd_iommu.c | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/xen/drivers/passthrough/amd/iommu_init.c 
b/xen/drivers/passthrough/amd/iommu_init.c
index e4b267ea61..72ea8824b0 100644
--- a/xen/drivers/passthrough/amd/iommu_init.c
+++ b/xen/drivers/passthrough/amd/iommu_init.c
@@ -36,7 +36,7 @@ static struct tasklet amd_iommu_irq_tasklet;
 unsigned int __read_mostly ivrs_bdf_entries;
 u8 __read_mostly ivhd_type;
 static struct radix_tree_root ivrs_maps;
-struct list_head amd_iommu_head;
+LIST_HEAD_READ_MOSTLY(amd_iommu_head);
 struct table_struct device_table;
 bool_t iommuv2_enabled;
 
diff --git a/xen/drivers/passthrough/amd/pci_amd_iommu.c 
b/xen/drivers/passthrough/amd/pci_amd_iommu.c
index dbc71ca7d5..6ddeb790a0 100644
--- a/xen/drivers/passthrough/amd/pci_amd_iommu.c
+++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c
@@ -150,8 +150,6 @@ static void amd_iommu_setup_domain_device(
 
 int __init acpi_ivrs_init(void)
 {
-    INIT_LIST_HEAD(&amd_iommu_head);
-
     if ( !iommu_enable && !iommu_intremap )
         return 0;
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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