On 2/2/2026 8:45 PM, Yoann Congal via lists.openembedded.org wrote:
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Le dim. 1 févr. 2026 à 08:52, Mathieu Dubois-Briand via
lists.openembedded.org <http://lists.openembedded.org>
<[email protected]> a écrit :
On Fri Jan 30, 2026 at 2:41 PM CET, Hemanth.KumarMD via
lists.openembedded.org <http://lists.openembedded.org> wrote:
> From: Hemanth Kumar M D <[email protected]>
>
> https://blog.rust-lang.org/2026/01/22/Rust-1.93.0/
> Rust changes: https://github.com/rust-lang/rust/releases/tag/1.93.0
> Cargo changes:
https://doc.rust-lang.org/nightly/cargo/CHANGELOG.html#cargo-193-2026-01-22
>
> * rust-oe-selftest.patch updated for 1.93:
> Renamed UI test directive from add-core-stubs to add-minicore
as in
>
https://github.com/rust-lang/rust/commit/3796f7de57f5d4cf4325d1f13aeb07fdaa57983b
>
> * OE-selftests:
> - Exclude src/tools/remote-test-client from test suite.
> This unit test modifies the TEST_DEVICE_ADDR environment
variable,
> which breaks the OE test harness that uses the same variable for
> QEMU remote testing. Filed a bug with upstream:
> https://github.com/rust-lang/rust/issues/151823
>
> - Enable +v8a feature for cortexa57.
> Rust 1.93.0 added a regression test (PR #149549) to verify
that the
> ARMv8-A system register ttbr0_el2 is recognized in inline
assembly.
> This addresses issue #97724 where LLVM wasn't recognizing
ttbr0_el2
> as a valid register. Upstream Rust enables +v8a by default
for all
> AArch64 targets (PR #105026), but Yocto's custom target
specification
> doesn't inherit this. Adding +v8a ensures LLVM recognizes
ARMv8-A
> system registers, fixing the test failure.
>
> Related upstream links:
> - PR #149549: https://github.com/rust-lang/rust/pull/149549
> - Issue #97724: https://github.com/rust-lang/rust/issues/97724
> - PR #105026: https://github.com/rust-lang/rust/pull/105026
>
> Test results:
>
> rust v1.93.0
> +-------------+--------+---------+
> | Machine | Passed | Skipped |
> +-------------+--------+---------+
> | qemux86-64 | 21,689 | 646 |
> | qemux86 | 21,439 | 896 |
> | qemuarm64 | 21,495 | 840 |
> | qemuarm | 21,421 | 914 |
> | qemuriscv64 | 21,466 | 869 |
> +-------------+--------+---------+
>
> Test results difference (1.93.0 - 1.92.0):
>
> +-------------+--------+---------+
> | Machine | Passed | Skipped |
> +-------------+--------+---------+
> | qemux86-64 | +205 | +33 |
> | qemux86 | +205 | +33 |
> | qemuarm64 | +206 | +32 |
> | qemuarm | +205 | +33 |
> | qemuriscv64 | +205 | +33 |
> +-------------+--------+---------+
>
> Signed-off-by: Hemanth Kumar M D <[email protected]>
> ---
Hi Hemanth,
Thanks for the upgrade.
I suspect this is responsible of the
runtime_test.RustKernel.test_kernel_rust_sample selftest failure:
2026-01-31 16:20:41,991 - oe-selftest - INFO -
runtime_test.RustKernel.test_kernel_rust_sample
(subunit.RemotedTestCase)
2026-01-31 16:20:41,994 - oe-selftest - INFO - ... FAIL
...
ERROR: linux-yocto-6.16.11+git-r0 do_compile: Execution of
'/srv/pokybuild/yocto-worker/oe-selftest-debian/build/build-st-766138/tmp/work/qemux86_64-poky-linux/linux-yocto/6.16.11+git/temp/run.do_compile.189616'
failed with exit code 1
...
| error: unknown unstable option: `no-jump-tables`
https://autobuilder.yoctoproject.org/valkyrie/#/builders/35/builds/3127
https://autobuilder.yoctoproject.org/valkyrie/#/builders/48/builds/3022
Can you have a look at what is going wrong here?
Hello,
To clarify because this is not totally obvious:
This test is defined in the "[PATCH v5 00/15] Enable rust support for
linux kernel" from Harish.Sadineni (also at Windriver)
https://lore.kernel.org/openembedded-core/[email protected]/
So, the test is not present on master (or even master-next).
Hi all,
"[PATCH v5 00/15] Enable rust support for linux kernel" this series is
taken to mathieu/msater-next, on top of this series when testing with
rust-1.93.0 patch
has caused this build failure.
This failure is already identified in upstream and has a fix in
linux-kernel 6.18/master, so i will send a backport fix to linux-yocto
v6.16.
https://github.com/torvalds/linux/commit/789521b4717fd6bd85164ba5c131f621a79c9736
Can the rust 1.93.0 patch be tested/merged , By the time above mentioned
backported patch taken to linux-yocto v6.16?.
Thanks,
Mathieu
--
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
--
Yoann Congal
Smile ECS
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