lkl · tavip · May 7, 2026 · May 7, 2026 · May 7, 2026 · May 7, 2026
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -91,28 +91,13 @@ do_steps: &do_steps
 
 ## Customize the test machine
 jobs:
-  x86_64:
-   docker:
-     - image: lkldocker/circleci-x86_64:v1.4
-   environment:
-     CROSS_COMPILE: ""
-     MKARG: "dpdk=no"
-   <<: *do_steps
-
   i386:
    docker:
      - image: lkldocker/circleci-i386:v1.4
    environment:
      CROSS_COMPILE: ""
    <<: *do_steps
 
-  mingw32:
-   docker:
-     - image: lkldocker/circleci-mingw:v1.4
-   environment:
-     CROSS_COMPILE: "i686-w64-mingw32-"
-   <<: *do_steps
-
   android-arm32:
    docker:
      - image: lkldocker/circleci-android-arm32:v1.4
@@ -147,22 +132,10 @@ jobs:
      VALGRIND: 1
    <<: *do_steps
 
-  x86_64_qemu:
-   docker:
-     - image: lkldocker/circleci-qemu-x86_64:v1.4
-   environment:
-     CROSS_COMPILE: ""
-     MKARG: "dpdk=no"
-     LKL_QEMU_TEST: 1
-   <<: *do_steps
-
 workflows:
   version: 2
   build:
     jobs:
-     - x86_64
-     - x86_64_qemu
-     - mingw32
      - android-aarch64
      - freebsd11_x86_64
      - i386

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - displayTargetName: ubuntu-22.04
+          - displayTargetName: linux
             os: unix
             runs_on: ubuntu-22.04
             shell: bash
@@ -38,6 +38,12 @@ jobs:
             runs_on: ubuntu-22.04
             shell: bash
             build_options: "LLVM=1 CROSS_COMPILE=x86_64-linux-gnu"
+          - displayTargetName: freebsd
+            os: unix
+            runs_on: ubuntu-22.04
+            shell: bash
+            build_options: "LLVM=1 CROSS_COMPILE=x86_64-unknown-freebsd SYSROOT=~/freebsd-sysroot"
+            make_sysroot: "./tools/lkl/scripts/freebsd-make-sysroot.sh"
     timeout-minutes: 100
     env:
       CCACHE_DIR: ${{ github.workspace }}/.ccache
@@ -109,12 +115,7 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           sudo apt update -y
-          sudo apt install -y ccache libjsmn-dev libfuse3-dev
-      - name: Install clang toolchain
-        if: runner.os == 'Linux'
-        run: |
-          sudo apt update -y
-          sudo apt install -y clang lld llvm
+          sudo apt install -y ccache libjsmn-dev libfuse3-dev clang lld llvm qemu-system-x86 qemu-utils sshpass cloud-image-utils
       - name: Install patched binutils for Windows
         if: runner.os == 'Windows'
         run: |
@@ -145,10 +146,24 @@ jobs:
           sudo sh -c "echo 0 > /proc/sys/vm/mmap_min_addr"
           echo "setting env variable (debug)"
           echo "ZPOLINE_DEBUG=0" >> "$GITHUB_ENV"
+      - name: Start QEMU
+        if: matrix.displayTargetName == 'linux'
+        run: |
+          ./tools/lkl/scripts/qemu-x86_64-make-images.sh
+          sudo chmod a+rw /dev/kvm
+          . tools/lkl/scripts/qemu-x86_64-start-and-set-env.sh
+          echo MYHOST="$HOST" >> $GITHUB_ENV
+          echo MYSSH="$MYSSH" >> $GITHUB_ENV
+          echo MYSCP="$MYSCP" >> $GITHUB_ENV
+          echo LKL_QEMU_TEST=1 >> $GITHUB_ENV
+      - name: Make sysroot
+        run: |
+          ${{ matrix.make_sysroot }}
       - name: Build
         run: |
           make -j4 -C tools/lkl ${{ matrix.build_options }}
       - name: Tests
+        if: matrix.displayTargetName != 'freebsd'
         run: mkdir junit && make -C tools/lkl run-tests tests="--junit-dir ../../junit"
       - name: Save test results
         uses: actions/upload-artifact@v5

diff --git a/arch/lkl/Kconfig b/arch/lkl/Kconfig
@@ -124,7 +124,7 @@ config PCI
 	select NO_GENERIC_PCI_IOPORT_MAP
 	select GENERIC_PCI_IOMAP
 	select HAS_DMA
-	select DMA_OPS
+	select ARCH_HAS_DMA_OPS
 	default y
 
 config RAID6_PQ_BENCHMARK

diff --git a/arch/lkl/include/asm/io.h b/arch/lkl/include/asm/io.h
@@ -106,7 +106,16 @@ static inline void __iounmap(void __iomem *addr)
 #define iounmap __iounmap
 #endif
 
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wnull-pointer-arithmetic"
+#endif
+
 #include <asm-generic/io.h>
 
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
 #endif /* _ASM_LKL_IO_H */
 
diff --git a/arch/lkl/include/asm/string.h b/arch/lkl/include/asm/string.h
@@ -51,9 +51,16 @@ static inline void *__memmove(void *dest, const void *src, size_t count)
 
 #else /* __SANITIZE_ADDRESS__ */
 
-#undef memcpy
+void *__asan_memset(void *addr, int c, ssize_t len);
+void *__asan_memmove(void *dest, const void *src, ssize_t len);
+void *__asan_memcpy(void *dest, const void *src, ssize_t len);
+
 #undef memset
+#define memset(s, c, n) __asan_memset(s, c, n)
 #undef memmove
+#define memmove(dst, src, len) __asan_memmove(dst, src, len)
+#undef memcpy
+#define memcpy(dst, src, len) __asan_memcpy(dst, src, len)
 
 #endif /* __SANITIZE_ADDRESS__ */
 

diff --git a/tools/lkl/Makefile.autoconf b/tools/lkl/Makefile.autoconf
@@ -14,12 +14,12 @@ $(shell echo "CONFIG_$(1)=$(2)" >> $(OUTPUT)/kernel.config)
 endef
 
 define find_include
-  $(eval include_paths=$(shell $(CC) -E -Wp,-v -xc /dev/null 2>&1 | grep '^ '))
-  $(foreach f, $(include_paths), $(wildcard $(f)/$(1)))
+  $(eval include_paths=$(shell $(CC) $(SYSROOT_FLAGS) -E -Wp,-v -xc /dev/null 2>&1 | grep '^ '))
+  $(foreach f,$(include_paths),$(wildcard $(f)/$(1)))
 endef
 
 define is_defined
-$(shell $(CC) -dM -E - </dev/null | grep $(1))
+$(shell $(CC) $(SYSROOT_FLAGS) -dM -E - </dev/null | grep $(1))
 endef
 
 define android_host
@@ -139,7 +139,13 @@ endef
 
 define llvm_target_to_ld_fmt
   $(if $(filter $(CROSS_COMPILE),x86_64-linux-gnu),elf64-x86-64,\
-    $(error Unsupported LLVM target $(CROSS_COMPILE)))
+    $(if $(filter $(CROSS_COMPILE),x86_64-unknown-freebsd),elf64-x86-64-freebsd, \
+    $(error Unsupported LLVM target $(CROSS_COMPILE))))
+endef
+
+define llvm_sysroot
+  CFLAGS += --target=$(CROSS_COMPILE) --sysroot=$(SYSROOT) -I$(SYSROOT)/usr/local/include
+  LDFLAGS += --target=$(CROSS_COMPILE) --sysroot=$(SYSROOT) -L$(SYSROOT)/usr/local/lib
 endef
 
 define do_autoconf_llvm
@@ -153,6 +159,8 @@ define do_autoconf_llvm
   $(eval LD := $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX))
   $(eval CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX))
   $(eval LD_FMT := $(call llvm_target_to_ld_fmt))
+  $(if $(SYSROOT),$(eval SYSROOT_FLAGS=--sysroot $(SYSROOT)))
+  $(if $(SYSROOT),$(call llvm_sysroot))
 endef
 
 define define_libprotobuf_mutator

diff --git a/tools/lkl/lib/posix-host.c b/tools/lkl/lib/posix-host.c
@@ -21,6 +21,9 @@
 #include <sys/mman.h>
 #include <poll.h>
 #include <limits.h>
+#ifdef __FreeBSD__
+#include <pthread_np.h>
+#endif
 #include <lkl_host.h>
 #include "iomem.h"
 #include "jmp_buf.h"

diff --git a/tools/lkl/lib/virtio_net_fd.c b/tools/lkl/lib/virtio_net_fd.c
@@ -12,10 +12,9 @@
 #include <errno.h>
 #include <string.h>
 #include <unistd.h>
+#include <limits.h>
 #ifdef __FreeBSD__
 #include <sys/syslimits.h>
-#else
-#include <limits.h>
 #endif
 #include <fcntl.h>
 #include <sys/poll.h>

diff --git a/tools/lkl/lklfuse.c b/tools/lkl/lklfuse.c
@@ -249,6 +249,12 @@ static int lklfuse_truncate(const char *path, off_t off,
 	return ret;
 }
 
+#ifdef __FreeBSD__
+#define O_LARGEFILE 0
+#define O_NOATIME 0
+#define O_TMPFILE 0
+#endif
+
 static int lklfuse_open3(const char *path, bool create, mode_t mode,
 	                 struct fuse_file_info *fi)
 {

diff --git a/tools/lkl/scripts/freebsd-make-sysroot.sh b/tools/lkl/scripts/freebsd-make-sysroot.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+function package_path()
+{
+  grep \"name\":\"$1\" packagesite.yaml | jq -r .repopath
+}
+
+mkdir -p ~/freebsd-sysroot
+cd ~/freebsd-sysroot
+wget -q https://download.freebsd.org/releases/amd64/14.4-RELEASE/base.txz
+tar -xf base.txz --exclude='./dev/*' --exclude='./chroot/*'
+
+# Get FreeBSD package index...
+wget -q https://pkg.freebsd.org/FreeBSD:14:amd64/latest/packagesite.pkg
+tar -xf packagesite.pkg packagesite.yaml
+
+wget -q https://pkg.freebsd.org/FreeBSD:14:amd64/latest/$(package_path argp-standalone)
+wget -q https://pkg.freebsd.org/FreeBSD:14:amd64/latest/$(package_path fusefs-libs3)
+
+tar -xf argp-standalone-*.pkg
+tar -xf fusefs-libs3-*.pkg
+
+rm fusefs-libs3-*.pkg argp-standalone-*.pkg base.txz packagesite.pkg packagesite.yaml
diff --git a/tools/lkl/scripts/qemu-x86_64-make-images.sh b/tools/lkl/scripts/qemu-x86_64-make-images.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+wget -q https://cloud-images.ubuntu.com/releases/noble/release-20260321/ubuntu-24.04-server-cloudimg-amd64.img
+wget -q https://cloud-images.ubuntu.com/releases/noble/release-20260321/unpacked/ubuntu-24.04-server-cloudimg-amd64-vmlinuz-generic
+wget -q https://cloud-images.ubuntu.com/releases/noble/release-20260321/unpacked/ubuntu-24.04-server-cloudimg-amd64-initrd-generic
+
+dd if=/dev/zero of=nvme.img bs=1024 count=102400
+cat > cloud.txt <<EOF
+#cloud-config
+user: lkl
+password: lkl
+sudo: ['ALL=(ALL) NOPASSWD:ALL']
+chpasswd: { expire: False }
+groups: sudo
+ssh_pwauth: True
+shell: /bin/bash
+EOF
+cloud-localds cloud.img cloud.txt
+rm cloud.txt
diff --git a/tools/lkl/scripts/qemu-x86_64-start-and-set-env.sh b/tools/lkl/scripts/qemu-x86_64-start-and-set-env.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+qemu-system-x86_64 --enable-kvm -m 512 -machine q35,kernel-irqchip=split \
+  -device intel-iommu,intremap=on \
+  -net nic,model=e1000 -net user,hostfwd=tcp::2222-:22 \
+  -drive file=nvme.img,if=none,id=D22 -device nvme,drive=D22,serial=1234 \
+  -hda ubuntu-24.04-server-cloudimg-amd64.img -hdb cloud.img \
+  -kernel ubuntu-24.04-server-cloudimg-amd64-vmlinuz-generic \
+  -initrd ubuntu-24.04-server-cloudimg-amd64-initrd-generic \
+  -append 'root=LABEL=cloudimg-rootfs ro intel_iommu=on console=tty1 console=ttyS0' \
+  -display none -serial mon:telnet::5555,server,nowait -daemonize
+
+SSH_OPTS="-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
+export MYHOST=lkl@localhost
+export MYSSH="sshpass -p lkl ssh $SSH_OPTS -p 2222 $MYHOST"
+export MYSCP="sshpass -p lkl scp -O $SSH_OPTS -P 2222"