Scott Wolchok

CI is green, just rebasing due to spurious conflicts from stacked land

Stack from [ghstack](https://github.com/ezyang/ghstack) (oldest at bottom): * #10491 * __->__ #10490 * #10489

Stack from [ghstack](https://github.com/ezyang/ghstack) (oldest at bottom): * __->__ #10362

"Build documentation / check-urls" failure looks spurious; will rerun when the option becomes available. ditto "[trunk / test-models-linux-aarch64 (qwen2_5, portable, linux.arm64.2xlarge) / linux-job (push)](https://github.com/pytorch/executorch/actions/runs/14602266767/job/40963018761?pr=10362)"

> hold on bumping? > Can we hold on bumping? The PR [pytorch/pytorch#151436](https://github.com/pytorch/pytorch/pull/151436) merged last week causing 50+ tests failing... @cccclai OK please let me know when we can do...

ping @cccclai @tugsbayasgalan

looks like we have more breakage if I try to roll forward to the present day. let's go back to at least catching up to April 22

test-llava-runner-linux seems to be consistently failing with SIGILL :(

> test-llava-runner-linux seems to be consistently failing with SIGILL :( Hm, I successfully ran `python -m unittest examples.models.llava.test.test_llava` with this PR on a Linux box, and Google says that the...

if I'm reading correctly, the illegal instruction is a vgf2p8affineqb somewhere in portable_lib. this is an AVX512GFNI instruction which requires at least Ice Lake and the processor in question appears...