[PATCH bpf-next 4/5] selftests/bpf: Update qemu config for riscv64 in vmtest.sh

[Pu Lehui]

From: Pu Lehui <pulehui at huawei.com>

When running vmtest.sh on riscv64, the kernel panic at boot due to an
illegal instruction. This is because '-cpu rv64' only enables a baseline
set of riscv extensions, whereas the kernel or toolchain requires newer
extensions. Switch to '-cpu max' so qemu enables all supported
extensions.

Additionally, qemu's pmu emulation for riscv64 currently has issues,
causing perf_event_open-related tests to fail. Temporarily disable the
sscofpmf extension to bypass these failures for now, and will try to
investigate and address it later.

While at it, update the libbpf/ci branch in INDEX_URL from 'master' to
'main'.

Signed-off-by: Pu Lehui <pulehui at huawei.com>
---
 tools/testing/selftests/bpf/vmtest.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/vmtest.sh b/tools/testing/selftests/bpf/vmtest.sh
index e7e0b419a0b8..7f294794de67 100755
--- a/tools/testing/selftests/bpf/vmtest.sh
+++ b/tools/testing/selftests/bpf/vmtest.sh
@@ -39,7 +39,7 @@ riscv64)
 	QEMU_BINARY=qemu-system-riscv64
 	QEMU_CONSOLE="ttyS0,115200"
 	HOST_FLAGS=(-M virt -cpu host -enable-kvm -smp 8)
-	CROSS_FLAGS=(-M virt -cpu rv64,sscofpmf=true -smp 8)
+	CROSS_FLAGS=(-M virt -cpu max,sscofpmf=false -smp 8)
 	BZIMAGE="arch/riscv/boot/Image"
 	ARCH="riscv"
 	;;
@@ -65,7 +65,7 @@ OUTPUT_DIR="$HOME/.bpf_selftests"
 KCONFIG_REL_PATHS=("tools/testing/selftests/bpf/config"
 	"tools/testing/selftests/bpf/config.vm"
 	"tools/testing/selftests/bpf/config.${PLATFORM}")
-INDEX_URL="https://raw.githubusercontent.com/libbpf/ci/master/INDEX"
+INDEX_URL="https://raw.githubusercontent.com/libbpf/ci/main/INDEX"
 NUM_COMPILE_JOBS="$(nproc)"
 LOG_FILE_BASE="$(date +"bpf_selftests.%Y-%m-%d_%H-%M-%S")"
 LOG_FILE="${LOG_FILE_BASE}.log"
-- 
2.34.1