[Xen-changelog] [xen staging] AMD/IOMMU: honour IR setting while pre-filling DTEs

[patchbot@xxxxxxx]

commit 195b79a97e6721ba8830036f47d2454545f32e44
Author:     Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
AuthorDate: Tue Nov 26 17:08:19 2019 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Nov 27 11:28:24 2019 +0000

    AMD/IOMMU: honour IR setting while pre-filling DTEs
    
    IV bit shouldn't be set in DTE if interrupt remapping is not
    enabled. It's a regression in behavior of "iommu=no-intremap"
    option which otherwise would keep interrupt requests untranslated
    for all of the devices in the system regardless of wether it's
    described as valid in IVRS or not.
    
    Signed-off-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Release-acked-by: Juergen Gross <jgross@xxxxxxxx>
---
 xen/drivers/passthrough/amd/iommu_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/amd/iommu_init.c 
b/xen/drivers/passthrough/amd/iommu_init.c
index 16e84d43d4..2b81e38f16 100644
--- a/xen/drivers/passthrough/amd/iommu_init.c
+++ b/xen/drivers/passthrough/amd/iommu_init.c
@@ -1279,7 +1279,7 @@ static int __init amd_iommu_setup_device_table(
         for ( bdf = 0, size /= sizeof(*dt); bdf < size; ++bdf )
             dt[bdf] = (struct amd_iommu_dte){
                           .v = true,
-                          .iv = true,
+                          .iv = iommu_intremap,
                       };
     }
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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