Rather than an "iointr" routine that decomposes a vector into an
IRQ, we maintain a vector table directly, hooking up each "iointr"
routine at the correct vector. This also allows us to hook device
interrupts up to specific vectors (c.f. Jensen).
We can shave even more cycles off, here, and I will, but it requires
some changes to the alpha_shared_intr stuff.
common routine into the individual load routines, since each load
routine needs to muddle with the "internals" of this operation.
Add a `prefetch threshold' member to the bus_dma_tag_t, so that
eventually we can determine whether or not to allocate a spill
page on a per-mapping basis.
only have to sync the I-stream when the mapping is removed or chaged,
and since the I-stream is fetch-only, changing protection bits does
not constitute changing the mapping (the VA->PA translation is still
the same).
the kernel to panic since it is recognised as a TGA and the TGA driver
doesn't [yet] know what to do with it.
This patch fixes that by:
o making tgamatch() try to actually figure out what kind
of TGA card is there, rather than simply relying on the
vendor/product ids.
o creating a tga_cnmatch() so that the console code in
arch/alpha/pci/pci_machdep.c can cause the same to occur.
o breaking up some of tga_getdevconfig() into a few different
functions to re-use code that would have been duplicated.
o changed arch/alpha/pci/pci_machdep.c so that it calls out
to tga_cnmatch() if DEVICE_IS_TGA() matches before it decides
to attach the console as a TGA.
Addresses PR: port-alpha/12923
be locked before it can be marked as `active' on a processor.
- Require that pmaps other than the kernel pmap be locked when they
are passed to pmap_tlb_shootdown(). This, combined with the locking
protocol tweak, allow us to get a consistent view of `activeness' of
a pmap, which means we can optmize away a lot of TLB shootdown traffic
for user pmaps.
- Borrow an idea from the i386mp branch; use the normal SHOOTDOWN IPI
to deal with hitting the entire TLB, and garbage-collect the TBIA
and TBIAP IPIs.
- fpevent_use is incremented the first time a process uses FP
for the first time (note, FPUSED is inherited on fork, but
cleared on exec).
- fpevent_reuse is incremented whenever a process that has previously
used FP has to take a FEN trap in order to be able to use it again.
discover it, but make it block on a semaphore until the MI kernel
says that we can let the secondary processors loose. This allows
us to announce the extensions on the secondary CPUs, and to compute
the intersection of all the extensions across all CPUs, like so:
cpu0 at mainbus0: ID 0 (primary), 21164A-2
cpu0: Architecture extensions: 1<BWX>
cpu1 at mainbus0: ID 1, 21164A-2
cpu1: Architecture extensions: 1<BWX>
to burn 3 insns to swap the arguments. Need to change the interface to
these routines to match memcpy().
G/C bcopy() from here. We'll let it be provided by libkern (which is
what provides memcpy()) until bcopy() is exorcised completely.
and with the comment '4.2BSD TCP/IP bug compat. Not recommended'
Add commented out 'TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG'
(All hail amiga and atari which make some attempt to automate the
multiplicity of config files...)
option for System V semaphores. It appears that there are no overrides
in the code and each file has the following added.
options SYSVSEM # System V semaphores
+#options SEMMNI=10 # number of semaphore identifiers
+#options SEMMNS=60 # number of semaphores in system
+#options SEMUME=10 # max number of undo entries per process
+#options SEMMNU=30 # number of undo structures in system
options SYSVSHM # System V shared memory
If anyone thinks that this is incorrect for any of these files, please
correct it.
Note - the i386 port was not forgotten. It was done separately.
on all platforms but the i386. On the i386 we look at T_PROTFLT and send
a SIGSEGV instead of SIGBUS. This makes allegro lisp 5.0 and pvs (a proof
verification system) to work.
XXX[1]: We need to go through each architecture and verify that we send
the correct signal on each trap type.
XXX[2]: trap.c on all other architectures but i386 needs to be modified
to s/trapsignal/(*p->p_emul->e_trapsignal)/g
jdolecek