From e9e593990cbcec898632fb595de8cc718a7fea8f Mon Sep 17 00:00:00 2001 From: Shiqing Gao Date: Tue, 13 Aug 2019 08:48:44 +0800 Subject: [PATCH] doc: add limitation for UEFI services - add limitation for UEFI services Signed-off-by: Shiqing Gao --- doc/introduction/index.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/introduction/index.rst b/doc/introduction/index.rst index 143ddb380..49c8dd270 100644 --- a/doc/introduction/index.rst +++ b/doc/introduction/index.rst @@ -162,6 +162,11 @@ The Boot process proceeds as follows: bootloader through dm-verity #. Virtual bootloader starts the User-side verified boot process +.. note:: + To avoid hardware resources conflict with ACRN hypervisor, UEFI + services shall not use IOMMU. In addtion, currently we only support + UEFI timer with HPET MSI. + Direct boot mode ================