Merge branch 'local-vmtest-enhancement-and-rv64-enabled'

# riscv64 deny list for BPF CI and local vmtest

exceptions					# JIT does not support exceptions

tailcalls/tailcall_bpf2bpf*			# JIT does not support mixing bpf2bpf and tailcalls

FEATURE_DISPLAY := $(FEATURE_TESTS)

# Makefile.feature expects OUTPUT to end with a slash

ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1)

$(let OUTPUT,$(OUTPUT)/,\

	$(eval include ../../../build/Makefile.feature))

else

OUTPUT := $(OUTPUT)/

$(eval include ../../../build/Makefile.feature)

OUTPUT := $(patsubst %/,%,$(OUTPUT))

endif

endif

ifeq ($(feature-llvm),1)

  LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets

  # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict

  LLVM_CFLAGS  += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))

  LLVM_LDLIBS  += $(shell $(LLVM_CONFIG) --libs $(LLVM_CONFIG_LIB_COMPONENTS))

  ifeq ($(shell $(LLVM_CONFIG) --shared-mode),static)

    LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))

  LLVM_LDLIBS  += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS))

  LLVM_LDLIBS  += $(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))

  LLVM_LDLIBS  += -lstdc++

  endif

  LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)

endif

          If you want to change pahole and llvm, you can change `PATH` environment

          variable in the beginning of script.

.. note:: The script currently only supports x86_64 and s390x architectures.

Running vmtest on RV64

======================

To speed up testing and avoid various dependency issues, it is recommended to

run vmtest in a Docker container. Before running vmtest, we need to prepare

Docker container and local rootfs image. The overall steps are as follows:

1. Create Docker container as shown in link [0].

2. Use mkrootfs_debian.sh script [1] to build local rootfs image:

.. code-block:: console

  $ sudo ./mkrootfs_debian.sh --arch riscv64 --distro noble

3. Start Docker container [0] and run vmtest in the container:

.. code-block:: console

  $ PLATFORM=riscv64 CROSS_COMPILE=riscv64-linux-gnu- \

    tools/testing/selftests/bpf/vmtest.sh \

    -l <path of local rootfs image> -- \

    ./test_progs -d \

        \"$(cat tools/testing/selftests/bpf/DENYLIST.riscv64 \

            | cut -d'#' -f1 \

            | sed -e 's/^[[:space:]]*//' \

                  -e 's/[[:space:]]*$//' \

            | tr -s '\n' ',' \

        )\"

Link: https://github.com/pulehui/riscv-bpf-vmtest.git [0]

Link: https://github.com/libbpf/ci/blob/main/rootfs/mkrootfs_debian.sh [1]

Additional information about selftest failures are

documented here.

CONFIG_AUDIT=y

CONFIG_BLK_CGROUP=y

CONFIG_BLK_DEV_INITRD=y

CONFIG_BLK_DEV_RAM=y

CONFIG_BONDING=y

CONFIG_BPF_JIT_ALWAYS_ON=y

CONFIG_BPF_PRELOAD=y

CONFIG_BPF_PRELOAD_UMD=y

CONFIG_CGROUPS=y

CONFIG_CGROUP_CPUACCT=y

CONFIG_CGROUP_DEVICE=y

CONFIG_CGROUP_FREEZER=y

CONFIG_CGROUP_HUGETLB=y

CONFIG_CGROUP_NET_CLASSID=y

CONFIG_CGROUP_PERF=y

CONFIG_CGROUP_PIDS=y

CONFIG_CGROUP_SCHED=y

CONFIG_CPUSETS=y

CONFIG_DEBUG_ATOMIC_SLEEP=y

CONFIG_DEBUG_FS=y

CONFIG_DETECT_HUNG_TASK=y

CONFIG_DEVTMPFS=y

CONFIG_DEVTMPFS_MOUNT=y

CONFIG_EXPERT=y

CONFIG_EXT4_FS=y

CONFIG_EXT4_FS_POSIX_ACL=y

CONFIG_EXT4_FS_SECURITY=y

CONFIG_FRAME_POINTER=y

CONFIG_HARDLOCKUP_DETECTOR=y

CONFIG_HIGH_RES_TIMERS=y

CONFIG_HUGETLBFS=y

CONFIG_INET=y

CONFIG_IPV6_SEG6_LWTUNNEL=y

CONFIG_IP_ADVANCED_ROUTER=y

CONFIG_IP_MULTICAST=y

CONFIG_IP_MULTIPLE_TABLES=y

CONFIG_JUMP_LABEL=y

CONFIG_KALLSYMS_ALL=y

CONFIG_KPROBES=y

CONFIG_MEMCG=y

CONFIG_NAMESPACES=y

CONFIG_NET=y

CONFIG_NETDEVICES=y

CONFIG_NETFILTER_XT_MATCH_BPF=y

CONFIG_NET_ACT_BPF=y

CONFIG_NET_L3_MASTER_DEV=y

CONFIG_NET_VRF=y

CONFIG_NONPORTABLE=y

CONFIG_NO_HZ_IDLE=y

CONFIG_NR_CPUS=256

CONFIG_PACKET=y

CONFIG_PANIC_ON_OOPS=y

CONFIG_PARTITION_ADVANCED=y

CONFIG_PCI=y

CONFIG_PCI_HOST_GENERIC=y

CONFIG_POSIX_MQUEUE=y

CONFIG_PRINTK_TIME=y

CONFIG_PROC_KCORE=y

CONFIG_PROFILING=y

CONFIG_RCU_CPU_STALL_TIMEOUT=60

CONFIG_RISCV_EFFICIENT_UNALIGNED_ACCESS=y

CONFIG_RISCV_ISA_C=y

CONFIG_RISCV_PMU=y

CONFIG_RISCV_PMU_SBI=y

CONFIG_RT_GROUP_SCHED=y

CONFIG_SECURITY_NETWORK=y

CONFIG_SERIAL_8250=y

CONFIG_SERIAL_8250_CONSOLE=y

CONFIG_SERIAL_OF_PLATFORM=y

CONFIG_SMP=y

CONFIG_SOC_VIRT=y

CONFIG_SYSVIPC=y

CONFIG_TCP_CONG_ADVANCED=y

CONFIG_TLS=y

CONFIG_TMPFS=y

CONFIG_TMPFS_POSIX_ACL=y

CONFIG_TUN=y

CONFIG_UNIX=y

CONFIG_UPROBES=y

CONFIG_USER_NS=y

CONFIG_VETH=y

CONFIG_VLAN_8021Q=y

CONFIG_VSOCKETS_LOOPBACK=y

CONFIG_XFRM_USER=y

	dctcp_skel = bpf_dctcp__open();

	if (!ASSERT_OK_PTR(dctcp_skel, "dctcp_skel"))

		return;

	strcpy(dctcp_skel->rodata->fallback, "cubic");

	strcpy(dctcp_skel->rodata->fallback_cc, "cubic");

	if (!ASSERT_OK(bpf_dctcp__load(dctcp_skel), "bpf_dctcp__load"))

		goto done;