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wireguard: selftests: support UML

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This shoud open up various possibilities like time travel execution, and
is also just another platform to help shake out bugs.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jason A. Donenfeld 2022-08-02 14:56:13 +02:00 committed by Jakub Kicinski
parent c31b14d86d
commit b438b3b8d6
2 changed files with 19 additions and 1 deletions
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17
tools/testing/selftests/wireguard/qemu/Makefile
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@ -248,8 +248,13 @@ QEMU_MACHINE := -cpu host,accel=kvm -machine s390-ccw-virtio -append $(KERNEL_CM
else
QEMU_MACHINE := -cpu max -machine s390-ccw-virtio -append $(KERNEL_CMDLINE)
endif
else ifeq ($(ARCH),um)
CHOST := $(HOST_ARCH)-linux-musl
KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
KERNEL_ARCH := um
KERNEL_CMDLINE := $(shell sed -n 's/CONFIG_CMDLINE=\(.*\)/\1/p' arch/um.config)
else
$(error I only build: x86_64, i686, arm, armeb, aarch64, aarch64_be, mips, mipsel, mips64, mips64el, powerpc64, powerpc64le, powerpc, m68k, riscv64, riscv32, s390x)
$(error I only build: x86_64, i686, arm, armeb, aarch64, aarch64_be, mips, mipsel, mips64, mips64el, powerpc64, powerpc64le, powerpc, m68k, riscv64, riscv32, s390x, um)
endif
TOOLCHAIN_FILENAME := $(CHOST)-cross.tgz
@ -262,7 +267,9 @@ $(eval $(call file_download,$(TOOLCHAIN_FILENAME),$(TOOLCHAIN_DIR),,$(DISTFILES_
STRIP := $(CHOST)-strip
CROSS_COMPILE_FLAG := --build=$(CBUILD) --host=$(CHOST)
$(info Building for $(CHOST) using $(CBUILD))
ifneq ($(ARCH),um)
export CROSS_COMPILE := $(CHOST)-
endif
export PATH := $(TOOLCHAIN_PATH)/bin:$(PATH)
export CC := $(CHOST)-gcc
CCACHE_PATH := $(shell which ccache 2>/dev/null)
@ -279,6 +286,7 @@ comma := ,
build: $(KERNEL_BZIMAGE)
qemu: $(KERNEL_BZIMAGE)
rm -f $(BUILD_PATH)/result
ifneq ($(ARCH),um)
timeout --foreground 20m qemu-system-$(QEMU_ARCH) \
-nodefaults \
-nographic \
@ -291,6 +299,13 @@ qemu: $(KERNEL_BZIMAGE)
-no-reboot \
-monitor none \
-kernel $<
else
timeout --foreground 20m $< \
$(KERNEL_CMDLINE) \
mem=$$(grep -q CONFIG_DEBUG_KMEMLEAK=y $(KERNEL_BUILD_PATH)/.config && echo 1G || echo 256M) \
noreboot \
con1=fd:51 51>$(BUILD_PATH)/result </dev/null 2>&1 | cat
endif
grep -Fq success $(BUILD_PATH)/result
$(BUILD_PATH)/init-cpio-spec.txt: $(TOOLCHAIN_PATH)/.installed $(BUILD_PATH)/init

3
tools/testing/selftests/wireguard/qemu/arch/um.config Normal file
View File

@ -0,0 +1,3 @@
CONFIG_64BIT=y
CONFIG_CMDLINE="wg.success=tty1 panic_on_warn=1"
CONFIG_FRAME_WARN=1280