- Anonymous memory can be reserved without being backed: large mappings,
MAP_NORESERVE and PROT_NONE are recorded and each page appears, zeroed,
on first touch -- from trap() for the program, from uva2ka() for the
kernel on its behalf. WebKit reserves 4 GB at start and touches a sliver;
backing it all failed with ENOMEM and Epiphany aborted.
- r8169: the 8168G generation and later (the laptop's 8168H, XID 541) are
taken from the firmware's out-of-band mode, get their PLL powered, the
receive gate opened, and their PHY reached through the OCP window. The
PHY's power-down bit is cleared; the old code kept it while restarting
autonegotiation. Untested on the hardware so far.
- The network thread follows each device's link into lwIP. The link was
read once at attach, 0.02 s into boot; real autonegotiation takes
seconds, so on hardware the interface stayed down for good.
- Twelve terminals, switched with Ctrl+Alt+F1..F12 by default: the keys X
uses, so the console and the desktop agree. AltGr+F-key is gone from
the defaults (chvt -c altgr+F brings it back).
- SO_PASSCRED on Unix sockets, with SCM_CREDENTIALS delivered by recvmsg.
WebKit sets it on its IPC sockets and aborted when refused.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
54b25708c3