0eb0a2b0a3
This is a simple demo for creating a virtio-over-ivshmem backend driver for a virtio block device. TODO: - resolve hacks - extract common bits to be shared with similar backends. Note: Specification work for virtio-over-ivshmem is ongoing, so details may still change. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2.1 KiB
SPDX-License-Identifier: GPL-2.0
all: test mod virtio-ivshmem-block virtio-ivshmem-console test: virtio_test vringh_test virtio_test: virtio_ring.o virtio_test.o vringh_test: vringh_test.o vringh.o virtio_ring.o virtio-ivshmem-block: virtio-ivshmem-block.o virtio-ivshmem-console: virtio-ivshmem-console.o
try-run = $(shell set -e;
if ($(1)) >/dev/null 2>&1;
then echo "$(2)";
else echo "$(3)";
fi)
__cc-option = $(call try-run,
$(1) -Werror $(2) -c -x c /dev/null -o /dev/null,$(2),)
cc-option = $(call __cc-option, $(CC),$(1))
CFLAGS += -g -O2 -Werror -Wno-maybe-uninitialized -Wall -I. -I../include/ -I ../../usr/include/ -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE -include ../../include/linux/kconfig.h $(call cc-option,-mfunction-return=thunk) $(call cc-option,-fcf-protection=none) $(call cc-option,-mindirect-branch-register)
CFLAGS += -pthread
LDFLAGS += -pthread
vpath %.c ../../drivers/virtio ../../drivers/vhost
mod:
${MAKE} -C pwd/../.. M=pwd/vhost_test V=${V}
#oot: build vhost as an out of tree module for a distro kernel
#no effort is taken to make it actually build or work, but tends to mostly work
#if the distro kernel is very close to upstream
#unsupported! this is a development tool only, don't use the
#resulting modules in production!
OOT_KSRC=/lib/modules/$$(uname -r)/build
OOT_VHOST=pwd/../../drivers/vhost
#Everyone depends on vhost
#Tweak the below to enable more modules
OOT_CONFIGS=
CONFIG_VHOST=m
CONFIG_VHOST_NET=n
CONFIG_VHOST_SCSI=n
CONFIG_VHOST_VSOCK=n
CONFIG_VHOST_RING=n
OOT_BUILD=KCFLAGS="-I "${OOT_VHOST} ${MAKE} -C ${OOT_KSRC} V=${V}
oot-build:
echo "UNSUPPORTED! Don't use the resulting modules in production!"
${OOT_BUILD} M=pwd/vhost_test
${OOT_BUILD} M=${OOT_VHOST} ${OOT_CONFIGS}
oot-clean: oot-build oot: oot-build oot-clean: OOT_BUILD+=clean
.PHONY: all test mod clean vhost oot oot-clean oot-build
clean:
${RM} .o vringh_test virtio_test vhost_test/.o vhost_test/.*.cmd
vhost_test/Module.symvers vhost_test/modules.order *.d
virtio-ivshmem-block virtio-ivshmem-console
-include *.d