Revoke a checked arena page with mprotect behind the registry and check
that the stored answer comes back, so the test fails without the cache.
Pass the gpu argument that GuestAllocations::Mutation::Add and Protect
now take.
describePages stored the whole VMA that PROCMAP_QUERY or /proc/self/maps returned. Linux merges adjacent
anonymous mappings with equal flags, so an arena VMA can span GiBs, and the first table miss inside it after
an invalidation rewrote every page of it. Only the pages of the request, rounded out to whole pages, are
stored now, as #1791 describes.
When the guest arena is available, RunUnmappedGapTests checks that a check stores no pages outside its
range, and that protecting and unmapping through the registry clears the stored pages. The registry checks
follow the test on the perf/linux-page-cache branch linked from #1791.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Goat Simulator 3 draws a triangle list whose indices are all 0xffffffff
with primitive restart off. Each fetch past a descriptor's records reads
zeros (out-of-bounds select 0 or 1), but the zero-padded vertex copies
were sized to the highest index: 160 GiB, which vkAllocateMemory refused.
When the highest index is at least 64Ki vertices past the largest
per-vertex record count, the draw now uses a copy of its indices with
every index past that count moved to it. Each attribute reads zeros
there as at the original index; only the vertex index the shader sees
changes, so indices closer to the records are left as they are.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Draws 32_ABGR exports into a tiled and a linear format 17 target and compares every texel with
the layout X in bits 0-4, Y in 5-9, Z in 10-14, W in bit 15, including the X/Z-swapped pairs, rounding
edges and texels outside the scissor. Reverting the X/Z exchange fails it.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
A device replaced at AttachWindow keeps its host imports in
HostImports::parked until it is destroyed, and each parked import keeps
its guest ranges pinned. A guest munmap, mprotect or free of such a range
spun in the pin waiter until APS5_PIN_WAIT_MS and then failed, because the
waiter only looked at the live imports. The replaced device was already
waited idle by PrepareForReplacement, so the waiter now drops the parked
imports over the range.
agc_parked_import_unmap imports a range on one device, again on a second
one, and unmaps it with a 3 s pin wait.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Retain weak identities and the full failed span so a replacement of either owner or a shorter remaining run retries the import. Keep unchanged failures cached across unrelated mapping changes without pinning their allocations. Existing upstream import lifetime, span windows and Windows fallback remain in place. AI-assisted implementation.
FailureCapture now requires the code address and stage in the diagnosed failure, with and without the request dump. Fails before the wrap, passes after. AI-assisted: yes.
Dean
Dean Galvin
Ahir
Adrià
Adrià Franch
Tyler Westerberg
fma-rc
JAB-dev
Utku Halis
Diversao
TibixDev
danzaio
authurtabo-byte