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f30c20b7be
The instability was not caused by kexec-fiwix logic itself but by oversized early-stage payload pressure in kernel-bootstrap mode. When too many distfiles are injected before the Fiwix handoff, the early memory/file-table assumptions become fragile and KVM can fail during transition. This change restores kexec-fiwix.c to the known baseline (matching commit 984b8322...) and fixes the actual failure mode by moving non-early distfiles out of the initial image. What changed: - Keep only bootstrap-required distfiles in early init image. - Generate a separate raw payload image (LBPAYLD1 format) for the remaining distfiles. - Attach payload image as an extra disk in QEMU/bare-metal kernel-bootstrap flow. - Add a dedicated C89/tcc-compatible importer (payload-import) that scans payload disks and copies files into /external/distfiles after jump: fiwix. - Insert improve: import_payload immediately after jump: fiwix so the full distfile set is restored before heavy build steps continue. - Add PAYLOAD_REQUIRED config gating so this behavior is active only in kernel-bootstrap paths that need it. Why this design: - Preserves minimal early environment assumptions (no dependency on full shell utilities for the copy operation itself). - Avoids adding filesystem-construction toolchain dependencies for the payload container by using a simple length-prefixed raw format. - Keeps bare-metal and QEMU behavior aligned: both can carry full build artifacts without overloading the early handoff stage. - Leaves kexec-fiwix behavior deterministic and auditable by reverting to a known-good baseline implementation.
22 lines
589 B
Bash
22 lines
589 B
Bash
#!/bin/sh
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#
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# SPDX-FileCopyrightText: 2026 live-bootstrap contributors
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# SPDX-License-Identifier: MIT
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set -ex
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if match x${PAYLOAD_REQUIRED} xTrue; then
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mkdir -p /dev
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test -b /dev/sda || mknod -m 600 /dev/sda b 8 0
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test -b /dev/sdb || mknod -m 600 /dev/sdb b 8 16
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test -b /dev/sdc || mknod -m 600 /dev/sdc b 8 32
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test -b /dev/sdd || mknod -m 600 /dev/sdd b 8 48
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mkdir -p /external/distfiles
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if test -f /external/distfiles/.payload_imported; then
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exit 0
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fi
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payload-import /external/distfiles
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touch /external/distfiles/.payload_imported
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fi
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