G8l: current-to-kernel ASID read-access guard genişletmesi

pub fn preflight_s257_whole_scheduler_read_coverage(
    caller_cpu: usize,
    request: Option<G8lS245WholeSchedulerExclusionAdmissionRequestView>,
) -> Result<
    G8lS257WholeSchedulerReadCoveragePreflightOutcome,
    G8lS257WholeSchedulerReadCoveragePreflightError,
> {
    match preflight_s256_whole_scheduler_read_coverage(caller_cpu, request)
        .map_err(G8lS257WholeSchedulerReadCoveragePreflightError::S256)?
    {
        G8lS256WholeSchedulerReadCoveragePreflightOutcome::Idle => {
            return Ok(G8lS257WholeSchedulerReadCoveragePreflightOutcome::Idle);
        }
        G8lS256WholeSchedulerReadCoveragePreflightOutcome::AwaitingCoverage {
            guarded_sites,
            unrouted_sites,
            ..
        } if guarded_sites == S256_WHOLE_SCHEDULER_GUARDED_SITES
            && unrouted_sites
                == S246_DIRECT_SCHEDULER_ACCESS_SITES - S256_WHOLE_SCHEDULER_GUARDED_SITES => {}
        G8lS256WholeSchedulerReadCoveragePreflightOutcome::AwaitingCoverage {
            guarded_sites,
            unrouted_sites,
            ..
        } => {
            return Err(
                G8lS257WholeSchedulerReadCoveragePreflightError::PriorCoverageDrift {
                    guarded_sites,
                    unrouted_sites,
                },
            );
        }
    }

    let outcome = preflight_s246_whole_scheduler_exclusion_provider(
        caller_cpu,
        request,
        G8lS246WholeSchedulerCoverageAudit::new(
            S246_SOURCE_AUDIT_UNITS,
            S246_DIRECT_SCHEDULER_ACCESS_SITES,
            S257_WHOLE_SCHEDULER_GUARDED_SITES,
        ),
    )
    .map_err(G8lS257WholeSchedulerReadCoveragePreflightError::S246)?;
    match outcome {
        G8lS246WholeSchedulerProviderPreflightOutcome::Idle => {
            Ok(G8lS257WholeSchedulerReadCoveragePreflightOutcome::Idle)
        }
        G8lS246WholeSchedulerProviderPreflightOutcome::AwaitingCoverage {
            request_id,
            guarded_sites,
            unrouted_sites,
        } => Ok(
            G8lS257WholeSchedulerReadCoveragePreflightOutcome::AwaitingCoverage {
                request_id,
                guarded_sites,
                unrouted_sites,
            },
        ),
        G8lS246WholeSchedulerProviderPreflightOutcome::CoverageCompleteAwaitingProvider {
            ..
        } => Err(G8lS257WholeSchedulerReadCoveragePreflightError::UnexpectedCoverageComplete),
    }
}

#[test]
fn s257_pending_request_reports_twenty_two_guarded_without_taking_it() {
    let state = pending_request();
    assert_eq!(
        preflight_s257_whole_scheduler_read_coverage(
            S245_TARGET_CPU1,
            Some(pending_request_view(&state)),
        ),
        Ok(
            G8lS257WholeSchedulerReadCoveragePreflightOutcome::AwaitingCoverage {
                request_id: 1,
                guarded_sites: 22,
                unrouted_sites: 89,
            }
        )
    );
    assert_eq!(state.pending_request_id(), Some(1));
}

  {
    id: "g8l-s257-current-to-kernel-asid-read-access-guard-expansion-partial",
    date: "2026-08-25",
    sequence: 257,
    status: "passed",
    umbrella_status: "partial",
    title: "G8l: current-to-kernel ASID read-access guard genişletmesi",
    summary:
      "S257 11/11 PASS ile S256 production reader gate'ini retire_current_asid_after_kernel_switch ve switch_to_kernel_address_space yollarındaki iki read-only current-ASID snapshot'ına taşıdı. Her iki yol yalnız u16 kopyası çıkarır; reader membership kopyadan hemen sonra ve TTBR0 write, TLBI, scheduler mutasyonu veya context switch başlamadan explicit düşer. Coverage 20/111'den 22/111'e ilerledi; 89 site unrouted kalır. Production exclusive wrapper hâlâ yoktur; S245 request non-consuming incelenir, alınmaz ve pending kalır.",
    evidence: [
      "S257 focused host grubu final kernel kaynağı üzerinde iki bağımsız koşuda 11/11 PASS verdi: canonical test-result 95 B / SHA-256 2c07f0a50574922424c491ec40d2a364ada2ad650cb922a2036d326c49b26e45.",
      "Exact source coverage: S256 guarded=20/111 başlangıcı yeniden doğrulandı; retiring-task ASID witness ve kernel-TTBR0 switch current-ASID snapshot'ları common reader membership altına alındı. Yeni toplam guarded=22/111, unrouted=89; additional read-only=2, mutating-while-reader-live=0.",
      "İki yol u16 current-ASID kopyası çıkarır. Reader immutable SCHEDULER okumasından önce alınır ve explicit drop; TTBR0 write, TLBI, scheduler mutable alias ve context-switch-capable işlerin tamamından önce gerçekleşir. Scheduler referansı guard dışına kaçmaz. Bu snapshot'lar IPC transaction yolu değildir; yeni IPC kilidi iddiası yapılmaz.",
      "S238'den S257'ye exact sıra-düzenli dependency matrisi 21 grup / 295/295 PASS verdi. Ham summary iki bağımsız koşuda byte-equal 1995 B / SHA-256 eddfd0c2bf32d1adcff7df4ee13688b1f6f613c235ac6f65a359041e390781ab; süre-normalize summary 2100 B / SHA-256 27ac0698615bd1d2904acd6ff74e3f3e60e78e631c27e35fab7dc509f3ac20fa oldu. S240 receipt ve SGI gruplarının ikisi de dahildir.",
      "RPi5 AArch64 normal/SMP profilleri ikişer koşuda byte-equal PASS verdi. Normal: 357775 B / 694 warning başlığı / SHA-256 913587da2e725672076b443e6a34f176171944165182e87f09235598ed896253. SMP: 357717 B / 694 warning başlığı / SHA-256 e7a26a9eee80617c6e8cd1297cb8619f299a4db4c7d3ceca14734cfabc85fa6a. Zero-warning iddiası yoktur.",
      "Exact production sırası: CPU1 timer IRQ → GIC EOI → S246 request preflight → S247 → S248 → S249 → S250 → S251 → S252 → S253 → S254 → S255 → S256 → S257 22/111 coverage preflight → S242 service → scheduler dispatch. Exact S245 request yalnız non-consuming metadata view ile incelenir, alınmaz ve pending kalır.",
      "Filtresiz workspace aynı frozen S96 identity kapısında exit 101 verdi: 51305 B / SHA-256 fbce963b5fcaf5138006f3adb0d2fb0f7b98da7b486b28152f829935fc81400e. Exact yedi tarihsel assertion dışlandığında final manifest-aware iki audit 219 grup / 2042 PASS / 0 fail / 7 filtered oldu. Süre-normalize test-result özetleri byte-equal 21782 B / SHA-256 6f7ae2dd0850454370b04af0ce4eeeab40ffb08b4d681e9973032ccec6d894da verdi; full-workspace GREEN iddia edilmez.",
      "S257 physical/device operations=0; RUNBOOK_EXECUTED_IN_S257=NO. Tarihsel S124 physical BOOT8H PASS ve tam operatör sırası görünür biçimde korunur.",
      "Canlı marker: S257_11_OF_11_CURRENT_TO_KERNEL_ASID_READ_ACCESS_GUARD_EXPANSION_TWO_ADDITIONAL_COPY_RETURNING_READ_ONLY_LOCAL_IRQ_GUARDED_U16_CURRENT_ASID_SNAPSHOTS_READER_EXPLICITLY_DROPPED_AFTER_COPY_BEFORE_TTBR0_WRITE_TLBI_SCHEDULER_MUTATION_OR_CONTEXT_SWITCH_TOTAL_22_OF_111_GUARDED_89_UNROUTED_NO_SCHEDULER_REFERENCE_ESCAPES_NO_CONTEXT_SWITCH_CAPABLE_OR_MUTATING_SITE_GUARDED_WHILE_READER_LIVE_PRODUCTION_EXCLUSIVE_WRAPPER_ABSENT_S245_REQUEST_INSPECTED_NONCONSUMING_NOT_TAKEN_REMAINS_PENDING_AWAITING_COVERAGE_NO_PROVIDER_AUTHORITY_NO_EXCLUSION_PROOF_NO_S244_ADMISSION_NO_S243_S236_INVOCATION_NO_SGI_NO_SAFE_RUNTIME_EXECUTION_CLAIM_AARCH64_NORMAL_SMP_COMPILED_WORKSPACE_2042_PASS_7_HISTORICAL_G8H_ASSERTIONS_RED_PHYSICAL_QEMU_CPU2_CPU3_HOTPLUG_SOAK_GENERIC_SMP_OPEN_FULL_PHYSICAL_RUNBOOK_VISIBLE_S417_TO_S467_S442_NO_RUNBOOK_EXECUTED_IN_S257_VERIFIED.",
    ],
    commands: [
      "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s256_asid_transition_read_access_guard_expansion -- --test-threads=1",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5,smp",
      "cargo test --workspace --quiet -- --test-threads=1 --skip wiring_does_not_mutate_timer_gic_boot_or_expand_runtime_scope --skip s97_runtime_and_layout_identities_are_unchanged --skip clean_bridge_literal_include_closure_is_manifest_complete --skip clean_image_make_recipe_inputs_are_exact_and_manifested --skip s99_and_s98_are_narrowly_historically_versioned --skip s97_s98_inputs_and_make_history_are_narrowly_versioned --skip historical_s90_and_s100_inputs_remain_exact",
    ],
    terminalSessions: [
      {
        id: "s257-g8l-current-to-kernel-asid-read-access-guard-expansion",
        title: "G8l S257 current-to-kernel ASID read-access guard genişletmesi",
        commandLines: [
          "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s256_asid_transition_read_access_guard_expansion -- --test-threads=1",
        ],
        outputLines: [
          "test result: ok; S257 focused 1 group / 11 passed; 0 failed",
          "source coverage: 7 units / 111 direct SCHEDULER sites / previous=20 / additional=2 / guarded=22 / unrouted=89",
          "new routes: retiring-task witness + kernel-TTBR0 switch current-ASID snapshots / local IRQ / u16 copy-returning read-only",
          "reader explicit drop precedes TTBR0 write / TLBI / scheduler mutation / context switch",
          "production exclusive wrapper absent; S245 request inspected non-consuming, not taken, remains pending",
        ],
        exitCode: 0,
        outputMode: "selected",
      },
    ],
    terminalSessionsNote:
      "S257 terminal özeti iki copy-returning current-to-kernel ASID snapshot'ını ve guard'ın tüm MMU/TLBI/mutasyon/context-switch işinden önce düşmesini doğrular; 89 unrouted site nedeniyle whole-scheduler exclusion provider authority/proof/admission değildir.",
    limitations: [
      "S257 yalnız 2 ek copy-returning read-only snapshot ile toplam 22/111 coverage'tır; 89 scheduler erişimi unrouted kalır.",
      "Reader membership kopyadan sonra explicit düşer; TTBR0 write, TLBI, scheduler mutasyonu veya context switch reader canlıyken başlamaz ve scheduler referansı guard dışına çıkmaz.",
      "Production exclusive acquisition wrapper'ı coverage tamamlanmadan yayımlanmadı; provider authority, exclusion proof, lease veya S244 admission yoktur.",
      "Exact S245 request yalnız read-only view ile incelenir, alınmaz ve pending kalır; S243/S236 production girişi veya SGI yoktur.",
      "QEMU RPi5 whole-scheduler provider yolunu doğrulamaz; fiziksel RPi, CPU2/CPU3, hotplug, soak ve Generic SMP açıktır.",
      "S257 fiziksel/device operasyonu yapmadı; RUNBOOK_EXECUTED_IN_S257=NO.",
    ],
  },