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The RTL8168 is now driven by Linux's r8169, unmodified, in a process. `make ldls-r8169` stages it from the running kernel together with libphy, mdio-bus, mdio_devres and the Realtek PHY driver, the kernel's BTF and the RTL PHY firmware, and etc/schinit/ldls-r8169.job starts it at boot with its log in /var/log/ldls-r8169.log. The native driver is out of the registry; its code, now with Linux's 8168H setup, stays as the fallback. LDLS grows what that needed: - ldlsd loads a comma-separated module set in dependency order, each linking against the ones before it, with BTF read before any init_module runs; - a driver core (bus match, driver probe), devres, kernel printf, real udelay/msleep/ktime and 1000 Hz jiffies, phylib's bitmaps and link_mode_params, firmware from /lib/firmware, and the symbols whose stub zero was a lie (list validity, try_module_get, dev_err_probe, eth_platform_get_mac_address); - pdev->bus is a real pci_bus, and cmovcc from per-CPU memory is rewritten like the other %gs forms. In QEMU all five modules load, link and initialise, and r8169 registers and finds no device. Probe and traffic are untested until real hardware. The kernel turns ASPM off on Realtek NIC links at boot, as r8169 does through pci_disable_link_state, which a process cannot. Idle CPUs enter ACPI _CST's C2 (CC6 on Zen) by port read or MWAIT when the APIC timer keeps running, instead of only ever halting at C1. docs/plan/gpu.md: amdgpu and nouveau through LDLS, with measurements. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
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800 B
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17 lines
800 B
Text
# The Realtek RTL8111/8168 ethernet, driven by Linux's own r8169.
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#
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# The modules (mdio-bus, libphy, mdio_devres, the Realtek PHY driver and r8169
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# itself), the kernel's BTF and the RTL PHY firmware are put in the image by
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# `make ldls-r8169`. ldlsd loads them in that order, binds the PHY driver
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# through its driver core, and probes the NIC; the interface is ldls0.
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#
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# On a machine with no RTL8168 ldlsd exits SCHINIT_EXIT_NORESTART and that is
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# the end of it. KeepAlive is off while this is new: a driver that crashes on
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# real hardware would otherwise be restarted into the same crash every few
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# seconds. Its output, every line of it, is in /var/log/ldls-r8169.log.
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Label = os.schos.ldls-r8169
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Program = /bin/sh
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Args = sh /lib/modules/ldls-r8169.sh
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RunAtLoad = yes
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KeepAlive = no
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