call overhead is incurred as we start sprinkling pmap_update() calls
throughout the source tree (no pmaps currently defer operations, but
we are adding the infrastructure to allow them to do so).
* turn ad-hoc `pmap resources allocated during sleep' into a panic condition
(this should all be prevented by higher level VM locking).
* arrange for ENOMEM to be returned if PMAP_CANFAIL is on, and malloc()
and/or pool_get() fail.
processing takes place. This prevents stat clock skew by a factor
approximately proportional to stathz (not a serious problem if stathz==100;
but considerable already if stathz==1000).
a ready-to-use level 1 page table (on sun4m) and MMU context.
A simple `fork()' test shows an improvement in spent system time of
around 4 percent (which is just a bit disappointing, IMO, but it's
an improvement nonetheless).
and use appropriately
- create more helper macros:
. cdev__xyz_init(c,n), such as cdev__ocri_init() for
/* open, close, read, ioctl */, etc.
. cdev__xRy_init(c,n), where nullop is used instead of enodev to dummy out
method `R' and the comments now read /* xxx (read) yyy */ instead
. cdev__xyz_t_init(c,n,t) - as per cdev__xyz_init, but sets d_type = t
as well
- use seltrue instead of dev_noimpl(poll,*), as (IIRC) cdevsw.d_poll should
always DTRT WRT returning a valid result. (a few devices previously
incorrectly returned ENODEV)
- use dev_noimpl(stop,enodev) instead of dev_noimpl(stop,nullop) if tty
== 0, because it doesn't matter if dev_type_stop isn't implemented in that
case, and it allows the use of the cdev__xyz_init macros. certain ports
(sparc,sparc64,x68k) used the nullop method for dev_type_stop in a few
drivers, whereas everything else uses enodev
- ensure that the comments are accurate WRT the behaviour of a given entry
return value of uvm_fault() to the onfault routine via %o0. users of
pcb_onfault now return this value to their callers rather than always
returning EFAULT. this allows i/o errors in VOP_GETPAGES() to be returned
back to read(), etc.
* Print notice if not all CPUs were attached
* Switch to SMP version of cache flush routines in just one place: in
cpu_attach() after all known CPUs have been configured.
- there's no need to have different PV_NC flags for sun4[c] & sun4m
- deal with kvm_uncache() being called on a managed page in a
separate helper function that deals with the caching state
within the pv list for that page, avoiding interference with
the `bad alias' removals in pv_unlink().
Note that currently never called for managed pages, but for now I'm
keeping the support in.
currently necessary to acquire the `running in kernel mode' lock;
pointed out by Bill Sommerfeld/Simon Gerraty.
* remove reference to `cpu_set_kpc()' from comments, as we don't have it.
* message buffer initialisation:
- change the buffer size to 8192 on all platforms
- don't assume the buffer is always located at physical address 0
- drop the SUN4 hack that left first half of the page unused;
I believe this is no longer necessary, since the msgbuf
data structure is duely sanity-checked before use in initmsgbuf().
structure. While this comes with the cost of having to search the
`vm_physmem' array every time need to find a PV entry corresponing to
some physical address, we gain the flexibility needed to support
arbitrary non-contiguous ranges of physical memory addresses.
Also, eliminate the need to sort the memory address ranges as presented
by the machine's PROM, and the requirement that physical memory starts
at address 0 (when possible).
file rather than requiring a raw device. Useful when dealing with vnd's
images and building snapshots. Also allows snapshots to be built in
securelevel > 0.
This adds support for EtherExpress/16 cards with 16k of RAM, and in the
process adds general support for PIO mode on these cards. This entails
changing the way the i82586 driver handles bus barriers, since it doesn't
allow for strange cases like this.
This has been tested on the i386 port with the 'ix' driver in both
16KB (which was the source of the problem) and 32KB modes, as well
as with the 'ef' driver. I've tested it (briefly) with 'ei' on arm26
as well. In theory, drivers other than 'ix' should follow precisely the
same code paths as before.
and link it directly to db_command_table[] so that it's not necessary
to do this at runtime. Make db_machine_command_table[] const on all ports.
g/c now unneded stuff, like db_machine_commands_install(), db_machine_init()
Patch written by enami.
enough, e.g. it has been initialized already by inittodr() or set
explicitly before by resettodr(). This prevents the TOD clock from going
way backwards when typing `halt' at the `mount root filesystem' prompt.
XXX if you have libc after citrus locale import, please recompile libc,
and your applications that use mbstate_t (rather rare). really sorry
for the mess.
only signal handler array sharable between threads
move other random signal stuff from struct proc to struct sigctx
This addresses kern/10981 by Matthew Orgass.
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures
rather than assigning to the whole field, set or clear individual flags,
which implies that the B_BUSY and B_INVAL flags will remain set.
this allows us to make the assertion in brelse() that B_BUSY is set,
which is the purpose of all this.
machines are one is very likely to run into SES units (what with all
the D1000's && A1000s out there now). I'll do it in sparc64 as soon
as I get that running for myself.
pseudo-device pty 2 # pseudo-terminals (Sysinst needs two)
(Some installers may not be using sysinst, in which case this just reduces
the number of ptys from 16 that are not used to 2 that are not used)
For i386 conf files, no change other than comments.
based on it working already for macppc.
Also add commented out:
#options VNODE_OP_NOINLINE # Don't inline vnode op calls
#options NFS_V2_ONLY # Exclude NFS3 and NQNFS code
as suggestions for additional savings
maps standard boot flags to corresponding RB_* values
use BOOT_FLAG() in port's MD code as appropriate
as discussed on tech-kern, add new boot flags -v, -q for booting
verbosely or quietly, and corresponding AB_VERBOSE/AB_QUIET
boot flags; also add FreeBSD-compatible bootverbose macro and
NetBSD-specific bootquiet macro
for hpcmips, use new bootverbose instead of it's own hpcmips_verbose
Tested on i386, and to limited extend (compile of affected files) also for
mvme68k, hp300, luna68k, sun3.
routine. Works similarly fto pmap_prefer(), but allows callers
to specify a minimum power-of-two alignment of the region.
How we ever got along without this for so long is beyond me.
all of physical memory, i.e. it conceptually is pv_table[0..avail_end].
The previous version could lead to an off-by-one error in the page allocation
for pv_table[] in some memory configurations.
thorpej