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[xen stable-4.11] SUPPORT.MD: Clarify the support state for the Arm SMMUv{1, 2} drivers

commit 8bce4698f6264f4b359643233b1878d0f61ed7b0
Author:     Julien Grall <jgrall@xxxxxxxxxx>
AuthorDate: Wed Sep 23 09:28:32 2020 +0100
Commit:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
CommitDate: Fri Mar 19 12:27:05 2021 -0700

    SUPPORT.MD: Clarify the support state for the Arm SMMUv{1, 2} drivers
    SMMUv{1, 2} are both marked as security supported, so we would
    technically have to issue an XSA for any IOMMU security bug.
    However, at the moment, device passthrough is not security supported
    on Arm and there is no plan to change that in the next few months.
    Therefore, mark Arm SMMUv{1, 2} as supported but not security supported.
    Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
    Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    (cherry picked from commit 28804c0ce9fde36feec04ad7f57b2683875da8a0)
 SUPPORT.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/SUPPORT.md b/SUPPORT.md
index 0c5bb6d4bc..8a28a4c0e9 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -56,8 +56,8 @@ Release Notes
     Status, AMD IOMMU: Supported
     Status, Intel VT-d: Supported
-    Status, ARM SMMUv1: Supported
-    Status, ARM SMMUv2: Supported
+    Status, ARM SMMUv1: Supported, not security supported
+    Status, ARM SMMUv2: Supported, not security supported
 ### ARM/GICv3 ITS
generated by git-patchbot for /home/xen/git/xen.git#stable-4.11



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