qemu/scripts/update-linux-headers.sh
Peter Maydell b55f546eef update-linux-headers.sh: Handle new kernel uapi/ directories
Recent kernels have moved to keeping the userspace headers
in uapi/ subdirectories. This breaks the detection of whether an
architecture has KVM support in the kernel because kvm.h has
moved in the kernel source tree. Update the check to support
both the old and new locations.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-30 23:39:53 -02:00

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#!/bin/sh -e
#
# Update Linux kernel headers QEMU requires from a specified kernel tree.
#
# Copyright (C) 2011 Siemens AG
#
# Authors:
# Jan Kiszka <jan.kiszka@siemens.com>
#
# This work is licensed under the terms of the GNU GPL version 2.
# See the COPYING file in the top-level directory.
tmpdir=`mktemp -d`
linux="$1"
output="$2"
if [ -z "$linux" ] || ! [ -d "$linux" ]; then
cat << EOF
usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
LINUX_PATH Linux kernel directory to obtain the headers from
OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
EOF
exit 1
fi
if [ -z "$output" ]; then
output="$PWD"
fi
# This will pick up non-directories too (eg "Kconfig") but we will
# ignore them in the next loop.
ARCHLIST=$(cd "$linux/arch" && echo *)
for arch in $ARCHLIST; do
# Discard anything which isn't a KVM-supporting architecture
if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
continue
fi
# Blacklist architectures which have KVM headers but are actually dead
if [ "$arch" = "ia64" ]; then
continue
fi
make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install
rm -rf "$output/linux-headers/asm-$arch"
mkdir -p "$output/linux-headers/asm-$arch"
for header in kvm.h kvm_para.h; do
cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
done
if [ $arch = x86 ]; then
cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86"
fi
done
rm -rf "$output/linux-headers/linux"
mkdir -p "$output/linux-headers/linux"
for header in kvm.h kvm_para.h vfio.h vhost.h virtio_config.h virtio_ring.h; do
cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
done
rm -rf "$output/linux-headers/asm-generic"
mkdir -p "$output/linux-headers/asm-generic"
for header in kvm_para.h; do
cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
done
if [ -L "$linux/source" ]; then
cp "$linux/source/COPYING" "$output/linux-headers"
else
cp "$linux/COPYING" "$output/linux-headers"
fi
rm -rf "$tmpdir"