Phase J: extend the kernel AcpiScheme's kcall to dispatch
on the new EnterS2Idle and ExitS2Idle AcPiVerb variants
from the local syscall fork. The kernel's scheme/acpi.rs
kcall handler now has a match arm for each new verb.
* EnterS2Idle (= 3): sets S2IDLE_REQUESTED + signals
kstop handle EVENT_READ with reason=2 (s2idle wake).
acpid calls this via kcall_wo(payload=&[], metadata=[3])
from `kstop_enter_s2idle()` in base.
* ExitS2Idle (= 4): s2idle wake path. Calls
s2idle_signal_wake() which clears S2IDLE_REQUESTED and
signals kstop event. This is provided for completeness;
the typical wake path is via mwait_loop's post-handler
which also calls s2idle_signal_wake.
Hardware-agnostic: the new typed-AcPiVerb API works on
any platform with Modern Standby firmware (Dell, HP,
Lenovo, LG Gram, etc.). The kstop string-arg path
('s2idle' / 's3X') remains available as a fallback for
older acpid builds.
The local syscall fork (local/sources/syscall/) provides
the new AcPiVerb variants via the [patch.crates-io]
overrides in base/Cargo.toml and kernel/Cargo.toml. The
local libredox fork (local/sources/libredox/) breaks the
type-identity barrier that previously caused E0277 errors
in scheme-utils and daemon.
vasilito
01ef6f5c5d