On Wed, Jun 25, 2025 at 04:48:04PM +0100, Alexandru Elisei wrote:
> Move away from hardcoded qemu arguments and use instead an associative
> array to get the needed arguments. This paves the way for adding kvmtool
> support to the scripts, which has a different syntax for the same VM
> configuration parameters.
>
> Suggested-by: Andrew Jones <andrew.jo...@linux.dev>
> Signed-off-by: Alexandru Elisei <alexandru.eli...@arm.com>
> ---
>
> Changes v3->v4:
>
> * Renamed vmm_opts to vmm_optname.
> * Dropped entries for 'kernel' and 'initrd' in vmm_optname because they
> weren't
> used in this patch.
> * Use vmm_optname_nr_cpus() and vmm_optname_args() instead of directly
> indexing
> into vmm_optname.
> * Dropped the check for empty $test_args in scripts/runtime.bash::run() by
> having $test_args already contain --append if not empty in
> scripts/common.bash::for_each_unittest().
>
> scripts/common.bash | 11 ++++++++---
> scripts/runtime.bash | 7 +------
> scripts/vmm.bash | 15 +++++++++++++++
> 3 files changed, 24 insertions(+), 9 deletions(-)
>
> diff --git a/scripts/common.bash b/scripts/common.bash
> index 9deb87d4050d..ae127bd4e208 100644
> --- a/scripts/common.bash
> +++ b/scripts/common.bash
> @@ -1,4 +1,5 @@
> source config.mak
> +source scripts/vmm.bash
>
> function for_each_unittest()
> {
> @@ -26,8 +27,12 @@ function for_each_unittest()
> $(arch_cmd) "$cmd" "$testname" "$groups" "$smp"
> "$kernel" "$test_args" "$opts" "$arch" "$machine" "$check" "$accel" "$timeout"
> fi
> testname=$rematch
> - smp=1
> + smp="$(vmm_optname_nr_cpus) 1"
> kernel=""
> + # Intentionally don't use -append if test_args is empty
> + # because qemu interprets the first word after
> + # -append as a kernel parameter instead of a command
> + # line option.
> test_args=""
> opts=""
> groups=""
> @@ -39,9 +44,9 @@ function for_each_unittest()
> elif [[ $line =~ ^file\ *=\ *(.*)$ ]]; then
> kernel=$TEST_DIR/${BASH_REMATCH[1]}
> elif [[ $line =~ ^smp\ *=\ *(.*)$ ]]; then
> - smp=${BASH_REMATCH[1]}
> + smp="$(vmm_optname_nr_cpus) ${BASH_REMATCH[1]}"
> elif [[ $line =~ ^test_args\ *=\ *(.*)$ ]]; then
> - test_args=${BASH_REMATCH[1]}
> + test_args="$(vmm_optname_args) ${BASH_REMATCH[1]}"
> elif [[ $line =~ ^(extra_params|qemu_params)\ *=\ *'"""'(.*)$
> ]]; then
> opts=${BASH_REMATCH[2]}$'\n'
> while read -r -u $fd; do
> diff --git a/scripts/runtime.bash b/scripts/runtime.bash
> index bc17b89f4ff5..86d8a2cd8528 100644
> --- a/scripts/runtime.bash
> +++ b/scripts/runtime.bash
> @@ -34,7 +34,7 @@ premature_failure()
> get_cmdline()
> {
> local kernel=$1
> - echo "TESTNAME=$testname TIMEOUT=$timeout MACHINE=$machine ACCEL=$accel
> $RUNTIME_arch_run $kernel -smp $smp $opts"
> + echo "TESTNAME=$testname TIMEOUT=$timeout MACHINE=$machine ACCEL=$accel
> $RUNTIME_arch_run $kernel $smp $test_args $opts"
> }
>
> skip_nodefault()
> @@ -88,11 +88,6 @@ function run()
> local accel="${10}"
> local timeout="${11:-$TIMEOUT}" # unittests.cfg overrides the default
>
> - # If $test_args is empty, qemu will interpret the first option after
> -append
> - # as a test argument instead of a qemu option, so make sure that doesn't
> - # happen.
> - [ -n "$test_args" ] && opts="-append $test_args $opts"
> -
> if [ "${CONFIG_EFI}" == "y" ]; then
> kernel=${kernel/%.flat/.efi}
> fi
> diff --git a/scripts/vmm.bash b/scripts/vmm.bash
> index 8365c1424a3f..7629b2b9146e 100644
> --- a/scripts/vmm.bash
> +++ b/scripts/vmm.bash
> @@ -1,3 +1,18 @@
> +declare -A vmm_optname=(
> + [qemu,args]='-append'
> + [qemu,nr_cpus]='-smp'
> +)
> +
> +function vmm_optname_args()
> +{
> + echo ${vmm_optname[$(vmm_get_target),args]}
> +}
> +
> +function vmm_optname_nr_cpus()
> +{
> + echo ${vmm_optname[$(vmm_get_target),nr_cpus]}
> +}
> +
> function vmm_get_target()
> {
> if [[ -z "$TARGET" ]]; then
> --
> 2.50.0
>
Reviewed-by: Andrew Jones <andrew.jo...@linux.dev>
