[P/D disagg] - support decode side radix cache#19746

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ishandhanani wants to merge 57 commits intomainfrom

ishan/add-radix-cache-decode

Commits on Mar 4, 2026

fix: set prefix_indices in _pre_alloc and always lock matched node
ishandhanani
committed

Commits on Mar 5, 2026

Commits on Mar 6, 2026

fix: handle 0-page KV transfer completion in disagg decode radix cache
ishandhanani
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fix: evict decode radix cache before KV pre-allocation
ishandhanani
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fix: don't treat radix cache 0-page transfers as CP dummy
ishandhanani
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fix: align decode radix cache prefix_len to page boundary
ishandhanani
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fix: account for locked prefix in pre-allocation budget
ishandhanani
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disagg prefill: keep chunk send cursor monotonic
ishandhanani
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fix: skip empty non-last chunk sends to prevent chunk_id inflation
ishandhanani
committed

Commits on Mar 11, 2026

Merge branch 'main' into ishan/add-radix-cache-decode
ishandhanani
authored

Commits on Mar 12, 2026

Merge branch 'main' into ishan/add-radix-cache-decode
ishandhanani
authored

Commits on Mar 13, 2026

Commits on Mar 16, 2026

Guard decode radix cache behind nixl backend
ishandhanani
committed

Commits on Mar 18, 2026

fix: reset cache_protected_len on retract to prevent KV pool leak
ishandhanani
committed

Commits on Mar 21, 2026

Commits on Mar 25, 2026

Commits on Apr 1, 2026

Merge branch 'main' into ishan/add-radix-cache-decode
ishandhanani
committed

Commits on Apr 5, 2026

Commits on Apr 6, 2026

Fix CI: move PD disaggregation validation before dummy-model short-circuit
ishandhanani
committed

Commits on Apr 7, 2026

Commits on Apr 9, 2026