s/optionms/options/ in copy-pasted comment.

Don't override isadma defflag for Xen, now that isadma is built for Xen PV too.
While there, match amd64 mainbus and call isa_dmainit() before attaching acpi.

Fixes a panic at boot on some hardware with a floppy disk controller.

Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

branches: 1.32.10;
remove XXXKALSR that became MI.

Remove the X86PMC code I had written, replaced by tprof. Many defines
become unused in specialreg.h, so remove them. We don't want to add
defines all the time, there are countless PMCs on many generations, and
it's better to just inline the event/unit values.

branches: 1.30.2; 1.30.4;
Make Xen compile again.

KASLR: add workarounds to compute the bootinfo VAs (use the direct map),
and don't use large pages yet. Both will be fixed later.

Remove vm86.

Pass 3.

Remove the remaining parts of compat_oldboot.

include opt_pmc.h

branches: 1.25.8;
Torn down KSTACK_CHECK_DR0, i386-only feature to detect stack overflow

This feature was intended to detect stack overflow with CPU Debug Registers
(x86). It was never ported to other ports, neither amd64 and should be
adapted for SMP...

Currently there might be better ways to detect stack overflows like page
mapping protection. Since the number of Debug Registers is restricted
(4 on x86), torn it down completely.

This interface introduced helper functions for Debug Registers, they will
be replaced with the new <x86/dbregs.h> interface.

KSTACK_CHECK_DR0 was disabled by default and won't affect ordinary users.

Sponsored by <The NetBSD Foundation>

branches: 1.24.14; 1.24.18;
Remove all references to KVM86.
It was only ever used by APMBIOS - and then only if an option was selected.
Probably didn't work well at all!

branches: 1.23.10;
remove Xbox support

branches: 1.22.12;
add dummy opt_via_c7temp.h, spotted by Andreas Gustafsson.

Add Intel SpeedStep and AMD PowerNow! support in Xen dom0. MSR operations
are now compiled in by default.

Note that MSR support in Xen depends on its version. rdmsr() should always
succeed, but wrmsr() to certain registers can end in a NOOP. In that case,
the error will be logged (see xm dmesg).

Setting CPU frequency (SpeedStep) requires Xen 3.3 with the option
cpufreq="dom0-kernel" passed down to hypervisor during boot.

Compiled and tested for SpeedStep under i386 for XEN3_DOM0 and XEN3PAE_DOM0
by jym@. amd64 was tested by Joel Carnat.

See also http://mail-index.netbsd.org/port-xen/2009/08/02/msg005213.html .

Commit requested by bouyer@.

remove Xen2 support.
ok bouyer@

vesabios is no more

branches: 1.18.10; 1.18.18; 1.18.20; 1.18.24; 1.18.28;
Merge the bouyer-xeni386 branch. This brings in PAE support to NetBSD xeni386
(domU only). PAE support is enabled by 'options PAE', see the new XEN3PAE_DOMU
and INSTALL_XEN3PAE_DOMU kernel config files.

See the comments in arch/i386/include/{pte.h,pmap.h} to see how it works.
In short, we still handle it as a 2-level MMU, with the second level page
directory being 4 pages in size. pmap switching is done by switching the
L2 pages in the L3 entries, instead of loading %cr3. This is almost required
by Xen, which handle the last L2 page (the one mapping 0xc0000000 - 0xffffffff)
in a very special way. But this approach should also work for native PAE
support if ever supported (in fact, the pmap should almost suport native
PAE, what's missing is bootstrap code in locore.S).

Remove options MATH_EMULATE.

Merge the bouyer-xeni386 branch to head, at tag bouyer-xeni386-merge1 (the
branch is still active and will see i386PAE support developement).
Sumary of changes:
- switch xeni386 to the x86/x86/pmap.c, and the xen/x86/x86_xpmap.c
pmap bootstrap.
- merge back most of xen/i386/ to i386/i386
- change the build to reduce diffs between i386 and amd64 in file locations
- remove include files that were identical to the i386/amd64 counterparts,
the build will find them via the xen-ma/machine link.

branches: 1.15.6;
Pull up the bouyer-xenamd64 branch to HEAD. This brings in amd64 support
to NetBSD/Xen, both Dom0 and DomU.

branches: 1.14.6; 1.14.22; 1.14.24; 1.14.28; 1.14.30;
On the Xbox, prevent scanning past the first device on bus 1.

Map the ISA hole on Xen, which allows us to access the SMBios, which allows
us to find the IPMI address. Add IPMI support on Xen (commented out for now)

Add Xen3 support for ACPI and/or MPBIOS + IOAPIC. To help with this, physical
CPUs are now configured on mainbus only in dom0, and only to know about
their APIC id. virtual CPUs are attached to hypervisor as:
vcpu* at hypervisor?
and this is what's used as curcpu(). The kernel config files needs to be
updated for this, see XEN3_DOM0 or XEN3_DOMU for examples.
XEN3_DOM0 now has acpi, MPBIOS and ioapic by default.
Note that a Xen dom0 kernel doens't have access to the lapic.

branches: 1.11.8; 1.11.10;
Add support for ACPI in xen-3 dom0 support. We can now boot a xen-3 dom0
kernel with a default xen comamnd line.

branches: 1.10.2; 1.10.4; 1.10.6; 1.10.8; 1.10.10;
Snapshot of work in progress on NetBSD port to Xen3:
- kernel (both dom0 and domU) boot, console is functionnal and it can starts
software from a ramdisk
- there is no driver front-end expect console for domU yet.
- dom0 can probe devices and ex(4) work when Xen3 is booted without acpi
and apic support. But the on-board IDE doens't get interrupts.
The PCI code still needs work (it's hardcoded to mode 1). Some of this
code should be shared with ../x86
The physical insterrupt code needs to get MPBIOS and ACPI support, and
do interrupt routing to properly interract with Xen.
To enable Xen-3.0 support, add
options XEN3
to your kernel config file (this will disable Xen2 support)
Changes affecting Xen-2.0 support (no functionnal changes intended):
- get more constants from genassym for assembly code
- remove some unneeded registers move from start()
- map the shared info page from start(), and remove the pte = 0xffffffff hack
- vector.S: in hypervisor_callback() make sure %esi points to
HYPERVISOR_shared_info before accessing the info page. Remplace some
hand-written assembly with the equivalent macro defined in frameasm.h
- more debug code, dissabled by default.

while here added my copyright on some files I worked on in 2005.

branches: 1.9.2;
merge ktrace-lwp.

branches: 1.8.2;
create opt_pcifixup.h to match with the recent i386 change.

Allow compiling a domain0 kernel with vga but without pckbc, and add
console support for USB keyboard. Problem pointed out by Karl Janmar on
port-xen.

branches: 1.6.2;
Properly define NISA and NPCI; cleanup use of NISA and NPCI.

Merge the bouyer-xen2 branch. This add supports for the Xen 2.0 virtual
machine kernel (both privileged and non-privileged domains), and remove support
for the old xen 1.2.

Add opt_scsipi_debug.h to list since compat_linux pulls in scsipi now for sg
driver

branches: 1.3.2; 1.3.8; 1.3.10;
Add keyboard support and wscons config options.

Add vga display support.

branches: 1.1.2;
Add port to the Xen virtual machine monitor.
(see http://www.cl.cam.ac.uk/Research/SRG/netos/xen/)