[sarashin65]

What this fixes

The v0.1.39 tag does not compile on the Intel (SYCL) side. The port went in as 5047172 ("sycl: port 0.1.39"); two engine-side changes were merged into the release branch after it (cb97e6c, 1189218) and nothing in sycl/ was updated for them.

Three compile errors, 3 files, 11 insertions / 5 deletions:

Engine change	What it broke in sycl/
#626 ec35cf0 - the thread affinity became a value (pin_current_thread() returns strata::kernels::cpu::ThreadAffinity, restore_thread_affinity() takes one)	sycl/include/strata/core/session.hpp still stored a long long and did not include the header that names the type; sycl/src/core/session.cpp still assigned the returned struct to it and passed the long long back. session.cpp:786 / :801
#559 ba707d8 - the two layer-range arguments were added to NativeDense::load	the out-of-line definition in sycl/src/core/native_dense.cpp:87 was still the 4-argument one, so it matched no declaration in include/strata/core/native_dense.hpp:24

A plain cmake --build stops at the first one:

sycl/src/core/session.cpp:786:23: error: assigning to 'long long' from incompatible type 'ThreadAffinity'
sycl/src/core/session.cpp:801:55: error: reference to type 'const ThreadAffinity' could not bind to an lvalue of type 'long long'
sycl/src/core/native_dense.cpp:87:19: error: out-of-line definition of 'load' does not match any declaration in 'strata::core::NativeDense'

The third error is independent of the first two: it appears with -- -k 0, or once the first two are fixed.

Both files are corrected by mirroring the CUDA sources: the same member type, the same outside() predicate, and the same place it is applied in the tensor loop (if (!eligible(tensor, include_ple_key) || outside(tensor.name)) continue;).

Three notes for review:

• pinned now follows CUDA as well: it is pinned_core.valid (src/core/session.cpp:550), so a pin that failed is not "restored". Nothing changes when the pin succeeds.
• No caller passes layer_lo/layer_hi yet (src/program/generate.cpp:2268,2596; sycl/src/program/generate.cpp:2366,2750), so outside() is never true today. This restores the build; it does not change what the engine computes.
• docs/INTEL.md keeps the copies up to date by re-migration. This is the same change a re-migration would merge in, so a later re-migration should merge over it cleanly (no sycl/tools/fixups.py entry needed).

For anyone reading the port's own history: the "0 errors, 157 targets" in docs/INTEL_ARC.md was written on the branch before those two merges (da3e9a1), so it is not a contradiction.

How it was checked

• Arch Linux, Intel oneAPI DPC++ 2026.0.0 + oneMKL 2026.0 (the port's docs used 2026.1.1).
• cmake -S sycl -B build-sycl -G Ninja -DCMAKE_C_COMPILER=icx -DCMAKE_CXX_COMPILER=icpx, SPIR-V (JIT).
• cmake --build build-sycl --target strata -- -k 0 -> 0 errors, links.

The two mismatches are a type and a declaration mismatch, so the compiler version does not matter.

Not covered

• The other targets (kernel parity tests, benches) and the AOT path were not built; only --target strata.
• Not run on an Arc in this PR.
• Not part of this PR: declarations in 10 shared headers that the port does not define yet (core/layer.hpp moe_route_window, the const QsaState* draft overloads in core/conversation_snapshot.hpp, kernels/bf16_gemv.hpp, kernels/elementwise.hpp, kernels/fused_gr.hpp, kernels/iq_kernels.hpp, kernels/ple.hpp, kernels/shared_expert.hpp, prefill/kernels.hpp, prefill/prefill.hpp). Nothing in sycl/ calls them, so it links. I can list them in an issue.

[LocalXPU]

Confirming this on a second card: at 6f32ec0 the three errors reproduce (session.cpp:786, session.cpp:801, native_dense.cpp:87) with oneAPI DPC++ 2026.1.1, and a three-file change like this one builds sycl/ clean with AOT bmg-g21 (all targets, 0 errors) on an Arc Pro B60. Nothing in the result changes at runtime, as the description says: with the change, the Coder IQ1_M and Flash-Next IQ2_XS run on two B60s with --layer-split. It would help if this or #809 went in, since a fresh checkout of main does not build the Intel engine.

[Niko1221]

Fixed in 0.1.40: merged, so sycl/ compiles against the 0.1.39 engine sources again (ThreadAffinity, the NativeDense::load layer range). Compile-checked with oneAPI 2026.1 in WSL; not run on an Arc by us.