- Require the APIC enumerators to explicitly enable mixed mode by calling
ioapic_enable_mixed_mode(). Calling this function tells the apic driver
that the PC-AT 8259A PICs are present and routable through the first I/O
APIC via an ExtINT pin. The mptable enumerator always calls this
function for now. The MADT enumerator only enables mixed mode if the
PC-AT compatability flag is set in the MADT header.
- Allow mixed mode to be enabled or disabled via a 'hw.apic.mixed_mode'
tunable. By default this tunable is set to 1 (true). The kernel option
NO_MIXED_MODE changes the default to 0 to preserve existing behavior, but
adding 'hw.apic.mixed_mode=0' to loader.conf achieves the same effect.
- Only use mixed mode to route IRQ 0 if it is both enabled by the APIC
enumerator and activated by the loader tunable. Note that both
conditions must be true, so if the APIC enumerator does not enable mixed
mode, then you can't set the tunable to try to override the enumerator.
to map. If the checksum fails, the table is unmapped and a NULL pointer
returned.
- For ACPI version >= 2.0, check the extended checksum of the RSDP.
AcpiOsGetRootPointer() already checks the version 1.0 checksum.
- Remap the full MADT table at the end of madt_probe() so that we verify
its checksum before saying it is really there.
Requested by: njl
the swizzle method for routing PCI interrupts across the bridge. This
fixes problems with motherboards (typically laptops) whose BIOS doesn't
provide a PRT for the AGP bridge even though there is a device entry for
the bridge in the ACPI namespace.
Tested by: Kenneth Culver culverk at sweetdreamsracing dot biz
it back to userspace, so it does not break bind(2) on raw sockets in jails.
Currently some processes, like traceroute(8) construct a routing request
to determine its source address based on the destination. This sockaddr
data is fed directly to bind(2). When bind calls ifa_ifwithaddr(9) to
make sure the address exists on the interface, the comparison will
fail causing bind(2) to return EADDRNOTAVAIL if the data wasnt zero'ed
before initialization.
Approved by: bmilekic (mentor)
"options OFW_NEWPCI").
This is a bit overdue, the new sparc64 OFW PCI code which is
meant to replace the old one is in place for 10 months and
enabled by default in GENERIC for 8 months. FreeBSD 5.2 and
5.2.1 also shipped with the new code enabled by default.
- Some minor clean-up, e.g. remove functions that encapsulated
the #ifdefs for OFW_NEWPCI, remove unused resp. no longer
required includes, etc.
Approved by: tmm, no objections on freebsd-sparc64
It's not quite correct from a posix Point Of view, but it is a lot better
than what was there before. This will be revisited later
when we decide what form our priority extensions will take. Posix doesn't
specify how a system scope thread can change its priority so you need to
add non-standard extensions to be able to do it..
For now make this slightly non standard to allow it to be done.
Submitted by: Dan Eischen originally, changed by myself.
there's not dependencies on pccard symboles, such a dependency is not
necessary. This means that drivers that have multiple attachments can
not drag bogus devices into the kernel at load time.
We can't (yet) do this with pci and isa. Drivers written for them
actually do seem to have symbols that depend on these busses'
implementation code.
ndis not touched until other things can be tested.
the kernel. We can guarantee this by resetting the FP status register.
This masks all FP traps. The reason we did get FP traps was that we
didn't reset the FP status register in all cases.
Make sure to reset the FP status register in syscall(). This is one of
the places where it was forgotten.
While on the subject, reset the FP status register only when we trapped
from user space.
Previously, mlockall(2) usage would leak MAP_FUTUREWIRE of the process's
vmspace::vm_map and subsequent processes would wire all of their memory.
Coupled with a wired-page leak in vm_fault_unwire(), this would run the
system out of free pages and cause programs to randomly SIGBUS when
faulting in new pages.
(Note that this is not the fix for the latter part; pages are still
leaked when a wired area is unmapped in some cases.)
Reviewed by: alc
PR kern/62930
