v2 sent. Used KERNEL_DEPLOY_DEPEND which is already used by
do_build[depends] in image.bbclass for the same reason.

Tested on qemux86-64, linux-yocto 6.18.33 do_write_qemuboot_conf
reruns correctly after kernel rebuild.

https://lists.openembedded.org/g/openembedded-core/topic/patch_v2_qemuboot_bbclass/119596210

On Mon, Jun 1, 2026 at 7:27 PM Siva Kumar Balasubramanian <
[email protected]> wrote:

> Thank you for the review.
>
> You are right, the fix needs proper [depends] declarations rather than
> just reordering. I will look at what the conf file actually references
> and add the appropriate task dependencies so do_write_qemuboot_conf is
> correctly invalidated whenever those artifacts change.
>
> Will send a v2 shortly.
>
> On Mon, Jun 1, 2026 at 6:28 PM Richard Purdie <
> [email protected]> wrote:
>
>> On Mon, 2026-06-01 at 16:53 +0530, Siva Balasubramanian via
>> lists.openembedded.org wrote:
>> > do_write_qemuboot_conf was chained after do_rootfs, so it only ran
>> > when the rootfs was rebuilt. If only the kernel was rebuilt (or any
>> > change that regenerates the image without invalidating the rootfs
>> > sstate), the .qemuboot.conf was left stale while new image artifacts
>> > were deployed with a new timestamp suffix. This caused runqemu to
>> > reference mismatched or missing artifacts.
>> >
>> > Move the task to run after do_image instead, so the conf file is
>> > always consistent with whatever was last deployed.
>> >
>> > Fixes: https://bugzilla.yoctoproject.org/show_bug.cgi?id=14520
>> > Signed-off-by: Siva Balasubramanian <[email protected]>
>> > ---
>> >  meta/classes-recipe/qemuboot.bbclass | 2 +-
>> >  1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/meta/classes-recipe/qemuboot.bbclass
>> b/meta/classes-recipe/qemuboot.bbclass
>> > index 56106b1958..47ce16935f 100644
>> > --- a/meta/classes-recipe/qemuboot.bbclass
>> > +++ b/meta/classes-recipe/qemuboot.bbclass
>> > @@ -127,7 +127,7 @@ QB_DRIVE_TYPE ?= "/dev/sd"
>> >  inherit image-artifact-names
>> >
>> >  # Create qemuboot.conf
>> > -addtask do_write_qemuboot_conf after do_rootfs before do_image
>> > +addtask do_write_qemuboot_conf after do_image before do_build
>> >
>> >  def qemuboot_vars(d):
>> >      build_vars = ['MACHINE', 'TUNE_ARCH', 'DEPLOY_DIR_IMAGE',
>>
>> Shouldn't we be fixing the task's dependencies so that it runs at the
>> right time anything it references changes?
>>
>> I'm not really seeing how this will improve things if to use your
>> example, the kernel is rebuilt since you haven't added a dependency on
>> that...
>>
>> Cheers,
>>
>> Richard
>>
>
>
> --
>
> Sivakumar B
>


-- 

Sivakumar B
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