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authorArthur Hanson Rasmusson <arthur@vgpu.io>2026-10-24 03:18:54 -0400
committerArthur Hanson Rasmusson <arthur@vgpu.io>2026-10-24 03:18:54 -0400
commite7101aae4639909996a826653e0bab089747ffa1 (patch)
treeea5afc5e27875d807d0620be55d5e2c90264dee7 /debug/risc-v-gsp-rm-vm/docs
parent99abc7e426ccb3011fa757bacbdfd5a3b91a2e0c (diff)
downloadopen-iov-e7101aae4639909996a826653e0bab089747ffa1.tar.gz
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vgsp-gr r597: emit the captured prelude's SEM_EXECUTE ACQUIRE groups ahead of the rebuilt window (default off)
The verbatim prelude replay breaks the launch (r599: qmd_rel=0 after an 8.9 s stall), so the acquire cannot be taken by replaying the prelude. This takes only the wait method groups - C46F addr 0x5c count>=5 with EXECUTE&7 != 1, and C5C0 SET_REPORT_SEMAPHORE A..D with a non-release op - and copies them verbatim before the proven init+window+PCAS+release block, leaving the window untouched. Gate: gsp_phys_rmcall_gr_acq (default 0). Live A/B on r601: the mail launch's prelude carries ZERO acquire groups (the C5C0 prelude is inline parameter data + release only), so emitted=0 and the VADD race is unchanged - the driver assumes its relocation copies precede the launch without an engine-visible wait.
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