is supposed to point directly to struct mbuf or struct sockaddr in kernel
space as appropriate, rather than being a pointer to memory in userland.
This is to be used by compat/* when emulation needs to wrap
send{to|msg}(2)/recv{from|msg}(2) and modify the passed struct
sockaddr.
Previous revision mistakely removed fix for DIAGNOSTIC "getblk: block size
invariant failed" panic, incorporated in rev. 1.5. The problem there
has been that depending on 'off', the code did bread() of 512 and after that
1024 bytes for same 'blkno'. Fix this differently than in rev. 1.5 -
if 'off' would bump the read over to next device block, trim the read to
end on block boundary and read rest in next loop iteration. This seems
to fix the problem, and avoids the performance hit rev. 1.5 incurred.
Fix bug in code handling holes for reads via read(2) - a variable
was incremented instead of decremented.
Some CMOS Z85C30 SCC's (as used in the SGI Indy and Mips Magnum 3000's)
reset the baud rate generator when a new prescaler is loaded - despite
what is documented in the datasheet.
Avoids "character glitch" problems when line discipline characteristics
are changed at the start of the login process, or during a ftp session
on the /dev/console device.
Tested on -sgimips, -mipsco and -alpha platforms
Some hosts and gateways ignore record route, but not "many." Of course,
more are firewalled. But that's not what was meant here.
Expand flood-pinging admonition to include multicast addresses.
Note flags that conflict with ping under Solaris and FreeBSD.
Reorder BUGS in rough order of significance.
Update some of the functions that use pmap_pte to pmap_map_ptes.
Note that there's a dummy macro for pmap_unmap_ptes, this is because at some point locking will be needed, so we need to be able to unlock them.
Performance gain seems to be minimal, however long term it should help improve things.
This is similair to the i386 pmap_map_ptes, however it's based on a version from Richard Earnshaw.
lukem