All genassym.sh usage need offset.inc

Fix cyclic dependency after r326552.

The OBJS_DEPEND_GUESS mechanism was making vmx_genassym.o depend
on all headers along with vmx_assym.h, though vmx_assym.h depends
on having vmx_genassym.o prese

Fix cyclic dependency after r326552.

The OBJS_DEPEND_GUESS mechanism was making vmx_genassym.o depend
on all headers along with vmx_assym.h, though vmx_assym.h depends
on having vmx_genassym.o present to generate. Moving the headers
to DPSRCS is enough to resolve the issue as they will no longer
be implicit dependencies for all objects. Because of this we
need explicit OBJS_DEPEND_GUESS entries to ensure the headers
are generated when needed for the *_support.o files that need
them.

X-MFC-With: r326552
MFC after: 2 weeks
Sponsored by: Dell EMC

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Add AMD IOMMU/AMD-Vi support in bhyve for passthrough/direct assignment to VMs. To enable AMD-Vi, set hw.vmm.amdvi.enable=1.

Reviewed by:bcr
Approved by:grehan
Tested by:rgrimes
Differential Revisio

Add AMD IOMMU/AMD-Vi support in bhyve for passthrough/direct assignment to VMs. To enable AMD-Vi, set hw.vmm.amdvi.enable=1.

Reviewed by:bcr
Approved by:grehan
Tested by:rgrimes
Differential Revision:https://reviews.freebsd.org/D10049

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sys/modules: normalize .CURDIR-relative paths to SRCTOP

This simplifies make output/logic

Tested with: `cd sys/modules; make ALL_MODULES=` on amd64
MFC after: 1 month
Sponsored by: Dell EMC Isilon

Exclude -flto when building *genassym.o

The build process generates *assym.h using nm from *genassym.o (which is
in turn created from *genassym.c).

When compiling with link-time optimization (LTO)

Exclude -flto when building *genassym.o

The build process generates *assym.h using nm from *genassym.o (which is
in turn created from *genassym.c).

When compiling with link-time optimization (LTO) using -flto, .o files
are LLVM bitcode, not ELF objects. This is not usable by genassym.sh,
so remove -flto from those ${CC} invocations.

Submitted by: George Rimar
Reviewed by: dim
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D9659

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Use lapic_ipi_alloc() to dynamically allocate IPI slots needed by bhyve when
vmm.ko is loaded.

Also relocate the 'justreturn' IPI handler to be alongside all other handlers.

Requested by: kib

Replace bhyve's minimal RTC emulation with a fully featured one in vmm.ko.

The new RTC emulation supports all interrupt modes: periodic, update ended
and alarm. It is also capable of maintaining the

Replace bhyve's minimal RTC emulation with a fully featured one in vmm.ko.

The new RTC emulation supports all interrupt modes: periodic, update ended
and alarm. It is also capable of maintaining the date/time and NVRAM contents
across virtual machine reset. Also, the date/time fields can now be modified
by the guest.

Since bhyve now emulates both the PIT and the RTC there is no need for
"Legacy Replacement Routing" in the HPET so get rid of it.

The RTC device state can be inspected via bhyvectl as follows:
bhyvectl --vm=vm --get-rtc-time
bhyvectl --vm=vm --set-rtc-time=<unix_time_secs>
bhyvectl --vm=vm --rtc-nvram-offset=<offset> --get-rtc-nvram
bhyvectl --vm=vm --rtc-nvram-offset=<offset> --set-rtc-nvram=<value>

Reviewed by: tychon
Discussed with: grehan
Differential Revision: https://reviews.freebsd.org/D1385
MFC after: 2 weeks

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Retire the '@' symlink. It isn't really needed and causes more
problems than it solves. SYSDIR is already defined almost always and
can be used instead. Working around the one case where it isn't is

Retire the '@' symlink. It isn't really needed and causes more
problems than it solves. SYSDIR is already defined almost always and
can be used instead. Working around the one case where it isn't is
much easier than working around the fact that @ may not exist in 18
other places.

Differential Revision: https://reviews.freebsd.org/D1100

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Add foo_genassym.c files to DPSRCS so dependencies for them are generated.
This ensures these objects are rebuilt to generate an updated header of
assembly constants if needed.

Move the ACPI PM timer emulation into vmm.ko.

This reduces variability during timer calibration by keeping the emulation
"close" to the guest. Additionally having all timer emulations in the kernel

Move the ACPI PM timer emulation into vmm.ko.

This reduces variability during timer calibration by keeping the emulation
"close" to the guest. Additionally having all timer emulations in the kernel
will ease the transition to a per-VM clock source (as opposed to using the
host's uptime keep track of time).

Discussed with: grehan

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Fix build to not bogusly always rebuild vmm.ko.

Rename vmx_assym.s to vmx_assym.h to reflect that file's actual use
and update vmx_support.S's include to match. Add vmx_assym.h to the
SRCS to that i

Fix build to not bogusly always rebuild vmm.ko.

Rename vmx_assym.s to vmx_assym.h to reflect that file's actual use
and update vmx_support.S's include to match. Add vmx_assym.h to the
SRCS to that it gets properly added to the dependency list. Add
vmx_support.S to SRCS as well, so it gets built and needs fewer
special-case goo. Remove now-redundant special-case goo. Finally,
vmx_genassym.o doesn't need to depend on a hand expanded ${_ILINKS}
explicitly, that's all taken care of by beforedepend.

With these items fixed, we no longer build vmm.ko every single time
through the modules on a KERNFAST build.

Sponsored by: Netflix

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Restructure the MSR handling so it is entirely handled by processor-specific
code. There are only a handful of MSRs common between the two so there isn't
too much duplicate functionality.

The VT-x c

Restructure the MSR handling so it is entirely handled by processor-specific
code. There are only a handful of MSRs common between the two so there isn't
too much duplicate functionality.

The VT-x code has the following types of MSRs:

- MSRs that are unconditionally saved/restored on every guest/host context
switch (e.g., MSR_GSBASE).

- MSRs that are restored to guest values on entry to vmx_run() and saved
before returning. This is an optimization for MSRs that are not used in
host kernel context (e.g., MSR_KGSBASE).

- MSRs that are emulated and every access by the guest causes a trap into
the hypervisor (e.g., MSR_IA32_MISC_ENABLE).

Reviewed by: grehan

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Move the atpit device model from userspace into vmm.ko for better
precision and lower latency.

Approved by: grehan (co-mentor)

Replace the userspace atpic stub with a more functional vmm.ko model.

New ioctls VM_ISA_ASSERT_IRQ, VM_ISA_DEASSERT_IRQ and VM_ISA_PULSE_IRQ
can be used to manipulate the pic, and optionally the ioa

Replace the userspace atpic stub with a more functional vmm.ko model.

New ioctls VM_ISA_ASSERT_IRQ, VM_ISA_DEASSERT_IRQ and VM_ISA_PULSE_IRQ
can be used to manipulate the pic, and optionally the ioapic, pin state.

Reviewed by: jhb, neel
Approved by: neel (co-mentor)

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Add HPET device emulation to bhyve.

bhyve supports a single timer block with 8 timers. The timers are all 32-bit
and capable of being operated in periodic mode. All timers support interrupt
delivery

Add HPET device emulation to bhyve.

bhyve supports a single timer block with 8 timers. The timers are all 32-bit
and capable of being operated in periodic mode. All timers support interrupt
delivery using MSI. Timers 0 and 1 also support legacy interrupt routing.

At the moment the timers are not connected to any ioapic pins but that will
be addressed in a subsequent commit.

This change is based on a patch from Tycho Nightingale ([email protected]).

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Move the ioapic device model from userspace into vmm.ko. This is needed for
upcoming in-kernel device emulations like the HPET.

The ioctls VM_IOAPIC_ASSERT_IRQ and VM_IOAPIC_DEASSERT_IRQ are used to

Move the ioapic device model from userspace into vmm.ko. This is needed for
upcoming in-kernel device emulations like the HPET.

The ioctls VM_IOAPIC_ASSERT_IRQ and VM_IOAPIC_DEASSERT_IRQ are used to
manipulate the ioapic pin state.

Discussed with: grehan@
Submitted by: Tycho Nightingale ([email protected])

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Remove the 'vdev' abstraction that was meant to sit on top of device models
in the kernel. This abstraction was redundant because the only device emulated
inside vmm.ko is the local apic and it is al

Remove the 'vdev' abstraction that was meant to sit on top of device models
in the kernel. This abstraction was redundant because the only device emulated
inside vmm.ko is the local apic and it is always at a fixed guest physical
address.

Discussed with: grehan

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Add in last remaining files to get AMD-SVM operational.

Submitted by: Anish Gupta ([email protected])

Fix 'make depend'.

Corral all the host state associated with the virtual machine into its own file.

This state is independent of the type of hardware assist used so there is
really no need for it to be in Intel-specif

Corral all the host state associated with the virtual machine into its own file.

This state is independent of the type of hardware assist used so there is
really no need for it to be in Intel-specific code.

Obtained from: NetApp

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Add support for trapping MMIO writes to local apic registers and emulating them.

The default behavior is still to present the local apic to the guest in the
x2apic mode.

BHyVe's vmm.ko can now be built with the in-tree binutils.

Many thanks to jhb@ for making this happen.

Missed this in the previous commit to add 'show vmcs': add opt_ddb.h as
a source file.

Remove misleading macro definition (-DOLD_BINUTILS) from CFLAGS.

At this point we require binutils from ports that understands how to
assemble the VT-x instructions.

Discussed with: grehan@

Import of bhyve hypervisor and utilities, part 1.
vmm.ko - kernel module for VT-x, VT-d and hypervisor control
bhyve - user-space sequencer and i/o emulation
vmmctl - dump of hypervisor regist

Import of bhyve hypervisor and utilities, part 1.
vmm.ko - kernel module for VT-x, VT-d and hypervisor control
bhyve - user-space sequencer and i/o emulation
vmmctl - dump of hypervisor register state
libvmm - front-end to vmm.ko chardev interface

bhyve was designed and implemented by Neel Natu.

Thanks to the following folk from NetApp who helped to make this available:
Joe CaraDonna
Peter Snyder
Jeff Heller
Sandeep Mann
Steve Miller
Brian Pawlowski

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