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[Xen-devel] [PATCH 1/2] xen: arm64: doc: Add the requirement that SCR_EL3.HCE is enabled

On ARM64 Linux the HVC instruction is used to trap into Xen. As this
can be set only at EL3, i.e. outside from Xen, document this boot

Signed-off-by: Dirk Behme <dirk.behme@xxxxxxxxxxxx>
 docs/misc/arm/booting.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/misc/arm/booting.txt b/docs/misc/arm/booting.txt
index 9802e5e..ffc9029 100644
--- a/docs/misc/arm/booting.txt
+++ b/docs/misc/arm/booting.txt
@@ -23,6 +23,10 @@ The exceptions to this on 32-bit ARM are as follows:
 There are no exception on 64-bit ARM.
+On ARM64 Linux it has to be ensured that the Secure Configuration
+Register has the HVC instructions enabled at EL1 and above
+(SCR_EL3.HCE == 1).
 [1] linux/Documentation/arm/Booting
 Latest version: 

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