Struct DiagPerPageState 

struct DiagPerPageState {
    expected: Option<&'static [ExpectedPageHash]>,
    seen: u32,
    bad: u32,
    overflow: bool,
    bitmap: [u64; 512],
    saved_count: u32,
    saved: [DiagSavedBadPage; 3],
}

Per-page expected-hash tracking state. Populated during Phase A capture as each 4 KB shared page is compared against the loader’s per-page SHA-384 baked into the measured expected-page-hashes region.

Fields

expected: Option<&'static [ExpectedPageHash]>

Cached slice from ShimParams::expected_page_hashes(). None if the IGVM has no expected-page-hashes region (older loader) or the region magic/version mismatched – per-page compare is disabled.

seen: u32

Number of 4 KB pages Phase A has processed so far.

bad: u32

Number of pages whose Phase A hash did not match expected[i].

overflow: bool

True if the shim hashed more pages than the loader emitted hashes for; per-page compare stops for the tail of the walk when this flips true.

bitmap: [u64; 512]

Bitmap of mismatched pages indexed by shim page index (bit i set = page i differed from expected[i]). Capped at DIAG_MAX_HASH_PAGES positions – anything beyond is not tracked in the bitmap (still counted in bad).

saved_count: u32

Number of entries populated in saved.

saved: [DiagSavedBadPage; 3]

Full 4 KB contents of the first DIAG_MAX_SAVED_BAD_PAGES bad pages, so we can hex-dump them for byte-level inspection.

Implementations

impl DiagPerPageState

const fn new_const() -> Self