rust: Increase QEMU size to 1024 MB

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.

(From OE-Core rev: 1c87bca91c61a272266a0f2763e0477b66f06c13)

Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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")