Re: [OE-core] [PATCH V5 1/3] rust: Increase QEMU size to 1024 MB

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Wed, 2025-10-15 at 02:59 -0700, Varatharajan, Deepesh via lists.openembedded.org wrote:
> From: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
> 
> Rightnow rust depends on llvm instead of rust-llvm
> 
> Setup in rust-llvm
> CFLAGS:remove = "-g"
> CXXFLAGS:remove = "-g"
> 
> Setup in llvm
> DEBUG_LEVELFLAG = "-g1"
> 
> As a result, the stage1 compiler crate binaries include debug symbols,
> increasing their size. These binaries are used to run tests inside QEMU.
> To accommodate this, increase the QEMU RAM allocation to 1024 MB.
> 
> Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
> ---
>  meta/lib/oeqa/selftest/cases/rust.py | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/meta/lib/oeqa/selftest/cases/rust.py b/meta/lib/oeqa/selftest/cases/rust.py
> index 95859a9eef..06acf53e9a 100644
> --- a/meta/lib/oeqa/selftest/cases/rust.py
> +++ b/meta/lib/oeqa/selftest/cases/rust.py
> @@ -102,8 +102,9 @@ class RustSelfTestSystemEmulated(OESelftestTestCase, OEPTestResultTestCase):
>          testargs =  exclude_fail_tests + " --no-doc --no-fail-fast --bless"
>  
>          # wrap the execution with a qemu instance.
> -        # Tests are run with 512 tasks in parallel to execute all tests very quickly
> -        with runqemu("core-image-minimal", runqemuparams = "nographic", qemuparams = "-m 512") as qemu:
> +        # Set QEMU RAM to 1024MB to support running unit tests for the compiler crate, including larger
> +        # test cases and parallel execution in the test environment.
> +        with runqemu("core-image-minimal", runqemuparams = "nographic", qemuparams = "-m 1024") as qemu:
>              # Copy remote-test-server to image through scp
>              host_sys = get_bb_var("RUST_BUILD_SYS", "rust")
>              ssh = SSHControl(ip=qemu.ip, logfile=qemu.sshlog, user="root")

This failed in testing:

https://autobuilder.yoctoproject.org/valkyrie/#/builders/42/builds/2522

I suspect some qemu platforms don't allow changing the memory size so easily?

Cheers,

Richard