Honor GRATE_MEMORY_FLAG in mmap_syscall and brk_syscall#1185

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rennergade wants to merge 25 commits into

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grate-memory-flag-runtime

Commits on May 11, 2026

mmap_syscall: temporary eprintln diagnostic
rennergade
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sc_convert_addr_to_sys: cross-cage base lookup, not "use as-is"
rennergade
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mmap_syscall: re-add diagnostic eprintln to identify why MAP_FIXED branch isn't taken
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Switch mmap/brk runtime check from FLAG-bit to value-range
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mmap-flag grate test: only apply FLAG to fd-backed mmaps
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diagnostics: hex eprintln in mmap_syscall + grate, to compare with/without grate args
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mmap-flag grate: fix target cageid (use arg5cage, not handler's grate id)
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Strip diagnostic eprintlns and grate/cage debug printfs
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TEMP diagnostic: trace mmap_syscall path-by-path
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Revert "TEMP diagnostic: trace mmap_syscall path-by-path"
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Address review: repurpose sc_convert_uaddr_to_host instead of adding new helpers
rennergade
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vmmap: handle cage uaddr in calculate_page_range (issue #1186 part 2)
rennergade
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copy_data_between_cages: translate src/dest before validate + memcpy
rennergade
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