probing/attaching the FPU. This is a problem for cpu_rng with the VIA
processors because, by design, cpu_rng attaches, and the entropy subsystem
starts up, very early.
If SSE is not enabled, calls to any "PadLock" instructions (ACE, RNG)
on the VIA processors will trap, per the manual:
linux.via.com.tw/support/beginDownload.action?eleid=181&fid=261
All VIA CPUs with PadLock, or which match the model/stepping test as
possibly having PadLock, have SSE. Just unconditionally enable it before
trying to turn the crypto block on.
Fixes crash at RNG attach time reported by Andrus V.; fix proposed by
jak@.
ftp with rumphijack is unstable probably because ftp uses siglongjmp from
a signal hander. So stop using ftp and use nc instead. This fixes test
failures of t_mtudisc on some environments such as my development machine
(amd64) and anita on sparc64.
It is required manipulate IFF_OACTIVE for old ethernet controllers and ALTQ
to use if_start. To avoid race, txq_lock of 0th txq is needed to write
IFF_OACTIVE.
TODO: read side refactor
- The Message Data register of MSI cap is not 32bit but 16bit.
- When the PCIE_LCAP_MAX_SPEED bitfiled is 0, it means it supports 2.5GT/s only.
- Print link de-emphasis value by "-X dB".
- Print Completion Timeout Ranges Supported filed with alphabets.
- Print TPH Completer Supported fileld's meaning.
- Print PCIE_DCAP2_MAX_EETLP correctly. 0 means 4 End-End TLP Prefixes.
- If the Supported Link Speed Vector is 0, the Link Capability 2 register is not
implemented. Don't decode LCAP2 when the vector is 0.
- The ACS's Egress Control Vector is 32bit, so print with 0x%08x.
- Print SR-IOV's device ID.
- Use __SHIFTOUT() to avoid using magic number.
- Prefix "0x" for hexadecimal value.
Calling if_deactivate_sadl and then if_sadl_setrefs exposes NULL-ed if_dl
and if_sadl to users for a moment. It's harmful because users expect that
they're always non-NULL. Fix it.
Note that a race condition still remains; if_dl and if_sald aren't updated
atomically so a user can see different data from if_dl and if_sadl.
Fortunately none uses both if_dl and if_sadl at the same time, so the race
condition doesn't hurt nobody for now. (In the first place exposing one
data with two ways is problematic?)
