jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1#!/bin/sh -e
2#
3# Update Linux kernel headers QEMU requires from a specified kernel tree.
4#
5# Copyright (C) 2011 Siemens AG
6#
7# Authors:
8# Jan Kiszka <jan.kiszka@siemens.com>
9#
10# This work is licensed under the terms of the GNU GPL version 2.
11# See the COPYING file in the top-level directory.
12
13tmpdir=$(mktemp -d)
14linux="$1"
15output="$2"
16
17if [ -z "$linux" ] || ! [ -d "$linux" ]; then
18 cat << EOF
19usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
20
21LINUX_PATH Linux kernel directory to obtain the headers from
22OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
23EOF
24 exit 1
25fi
26
27if [ -z "$output" ]; then
28 output="$PWD"
29fi
30
31cp_portable() {
32 f=$1
33 to=$2
34 if
35 grep '#include' "$f" | grep -v -e 'linux/virtio' \
36 -e 'linux/types' \
37 -e 'stdint' \
38 -e 'linux/if_ether' \
39 -e 'input-event-codes' \
40 -e 'sys/' \
41 -e 'pvrdma_verbs' \
42 -e 'drm.h' \
43 -e 'limits' \
44 -e 'linux/kernel' \
45 -e 'linux/sysinfo' \
46 > /dev/null
47 then
48 echo "Unexpected #include in input file $f".
49 exit 2
50 fi
51
52 header=$(basename "$f");
53 sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
54 -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
55 -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
56 -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
57 -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
58 -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
59 -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
60 -e 's/__bitwise//' \
61 -e 's/__attribute__((packed))/QEMU_PACKED/' \
62 -e 's/__inline__/inline/' \
63 -e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \
64 -e '/\"drm.h\"/d' \
65 -e '/sys\/ioctl.h/d' \
66 -e 's/SW_MAX/SW_MAX_/' \
67 -e 's/atomic_t/int/' \
68 -e 's/__kernel_long_t/long/' \
69 -e 's/__kernel_ulong_t/unsigned long/' \
70 -e 's/struct ethhdr/struct eth_header/' \
71 -e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \
72 "$f" > "$to/$header";
73}
74
75# This will pick up non-directories too (eg "Kconfig") but we will
76# ignore them in the next loop.
77ARCHLIST=$(cd "$linux/arch" && echo *)
78
79for arch in $ARCHLIST; do
80 # Discard anything which isn't a KVM-supporting architecture
81 if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
82 ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
83 continue
84 fi
85
86 # Blacklist architectures which have KVM headers but are actually dead
87 if [ "$arch" = "ia64" -o "$arch" = "mips" ]; then
88 continue
89 fi
90
91 if [ "$arch" = x86 ]; then
92 arch_var=SRCARCH
93 else
94 arch_var=ARCH
95 fi
96
97 make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install
98
99 rm -rf "$output/linux-headers/asm-$arch"
100 mkdir -p "$output/linux-headers/asm-$arch"
101 for header in kvm.h kvm_para.h unistd.h; do
102 cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
103 done
104 if [ $arch = powerpc ]; then
105 cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/"
106 fi
107
108 rm -rf "$output/include/standard-headers/asm-$arch"
109 mkdir -p "$output/include/standard-headers/asm-$arch"
110 if [ $arch = s390 ]; then
111 cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
112 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/"
113 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/"
114 fi
115 if [ $arch = arm ]; then
116 cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
117 cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
118 cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
119 fi
120 if [ $arch = x86 ]; then
121 cat <<-EOF >"$output/include/standard-headers/asm-x86/hyperv.h"
122 /* this is a temporary placeholder until kvm_para.h stops including it */
123EOF
124 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
125 cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
126 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
127 fi
128done
129
130rm -rf "$output/linux-headers/linux"
131mkdir -p "$output/linux-headers/linux"
132for header in kvm.h kvm_para.h vfio.h vfio_ccw.h vhost.h \
133 psci.h psp-sev.h userfaultfd.h; do
134 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
135done
136rm -rf "$output/linux-headers/asm-generic"
137mkdir -p "$output/linux-headers/asm-generic"
138for header in kvm_para.h; do
139 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
140done
141if [ -L "$linux/source" ]; then
142 cp "$linux/source/COPYING" "$output/linux-headers"
143else
144 cp "$linux/COPYING" "$output/linux-headers"
145fi
146
147cat <<EOF >$output/linux-headers/asm-x86/hyperv.h
148#include "standard-headers/asm-x86/hyperv.h"
149EOF
150cat <<EOF >$output/linux-headers/linux/virtio_config.h
151#include "standard-headers/linux/virtio_config.h"
152EOF
153cat <<EOF >$output/linux-headers/linux/virtio_ring.h
154#include "standard-headers/linux/virtio_ring.h"
155EOF
156
157rm -rf "$output/include/standard-headers/linux"
158mkdir -p "$output/include/standard-headers/linux"
159for i in "$tmpdir"/include/linux/*virtio*.h "$tmpdir/include/linux/input.h" \
160 "$tmpdir/include/linux/input-event-codes.h" \
161 "$tmpdir/include/linux/pci_regs.h" \
162 "$tmpdir/include/linux/ethtool.h" "$tmpdir/include/linux/kernel.h" \
163 "$tmpdir/include/linux/sysinfo.h"; do
164 cp_portable "$i" "$output/include/standard-headers/linux"
165done
166mkdir -p "$output/include/standard-headers/drm"
167cp_portable "$tmpdir/include/drm/drm_fourcc.h" \
168 "$output/include/standard-headers/drm"
169
170rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
171mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
172
173# Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary
174# import of several infiniband/networking/other headers
175tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h"
176# Parse the entire file instead of single lines to match
177# function declarations expanding over multiple lines
178# and strip the declarations starting with pvrdma prefix.
179sed -e '1h;2,$H;$!d;g' -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \
180 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \
181 "$tmp_pvrdma_verbs";
182
183for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h" \
184 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \
185 "$tmp_pvrdma_verbs"; do \
186 cp_portable "$i" \
187 "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/"
188done
189
190rm -rf "$output/include/standard-headers/rdma/"
191mkdir -p "$output/include/standard-headers/rdma/"
192for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do
193 cp_portable "$i" \
194 "$output/include/standard-headers/rdma/"
195done
196
197cat <<EOF >$output/include/standard-headers/linux/types.h
198/* For QEMU all types are already defined via osdep.h, so this
199 * header does not need to do anything.
200 */
201EOF
202cat <<EOF >$output/include/standard-headers/linux/if_ether.h
203#define ETH_ALEN 6
204EOF
205
206rm -rf "$tmpdir"