The SVE KVM support for arm64 includes the additional backend
header <asm/sve_context.h> from <asm/kvm.h>.
So update this header if it is available.
To avoid creating a sudden dependency on a specific minimum kernel
version, ignore such optional headers if the source kernel tree
doesn't have them.
Signed-off-by: Dave Martin <dave.mar...@arm.com>
---
Changes since v3:
* [Andre Przywara]: Quote argument to local (it turns out that some
shells, including dash, require this).
* [Andre Przywara]: Factor out copying of possibly-absent arch headers
as optional_arch, for easier reuse later.
---
util/update_headers.sh | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/util/update_headers.sh b/util/update_headers.sh
index a7e21b8..bf87ef6 100755
--- a/util/update_headers.sh
+++ b/util/update_headers.sh
@@ -25,11 +25,23 @@ fi
cp -- "$LINUX_ROOT/include/uapi/linux/kvm.h" include/linux
+unset KVMTOOL_PATH
+
+copy_optional_arch () {
+ local src="$LINUX_ROOT/arch/$arch/include/uapi/$1"
+
+ if [ -r "$src" ]
+ then
+ cp -- "$src" "$KVMTOOL_PATH/include/asm/"
+ fi
+}
+
for arch in arm arm64 mips powerpc x86
do
case "$arch" in
arm) KVMTOOL_PATH=arm/aarch32 ;;
- arm64) KVMTOOL_PATH=arm/aarch64 ;;
+ arm64) KVMTOOL_PATH=arm/aarch64
+ copy_optional_arch asm/sve_context.h ;;
*) KVMTOOL_PATH=$arch ;;
esac
cp -- "$LINUX_ROOT/arch/$arch/include/uapi/asm/kvm.h" \
--
2.1.4
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