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- change 'pics' from STAILQ to TAILQ
- ensure that Local APIC is always first in 'pics'
Reviewed by: jhb
Tested by: Sergey V. Dyatko <sergey.dyatko@gmail.com>,
KAHO Toshikazu <kaho@elam.kais.kyoto-u.ac.jp>
MFC after: 12 days
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last 10 years require this support.
Discussed with: db
Discussed with: kib
Reviewed by: imp
Reviewed by: jhb
Reviewed by: -hackers
Approved by: cperciva (mentor)
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can only be located at the beginning or the end of the BAR.
If the MSI-table is located in the middle of a BAR then we will split the
BAR into two and create two mappings - one before the table and one after
the table - leaving a hole in place of the table so accesses to it can be
trapped and emulated.
Obtained from: NetApp
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The maximum length of an environment variable puts a limitation on the
number of passthru devices that can be specified via a single variable.
The workaround is to allow user to specify passthru devices via multiple
environment variables instead of a single one.
Obtained from: NetApp
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This instruction moves a byte from a register to a memory location.
Tested by: tycho nightingale at pluribusnetworks com
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by moving bits that are MI out into headers in compat/linux.
Reviewed by: Chagin Dmitry dmitry | gmail
MFC after: 2 weeks
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are automatically saved and restored in the VMCS.
Reviewed by: neel
Obtained from: NetApp
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FreeBSD TCP-level socket options (only the first two are). Instead,
using a mapping function and fail unsupported options as we do for other
socket option levels.
MFC after: 2 weeks
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that 'smp_started != 0'.
This is required because the VT-x initialization calls smp_rendezvous()
to set the CR4_VMXE bit on all the cpus.
With this change we can preload vmm.ko from the loader.
Reported by: alfred@, sbruno@
Obtained from: NetApp
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The pre-commit hook will not allow any commits without the svn:keywords
property in head.
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'bhyve' was developed by grehan@ and myself at NetApp (thanks!).
Special thanks to Peter Snyder, Joe Caradonna and Michael Dexter for their
support and encouragement.
Obtained from: NetApp
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During the early days of bhyve it did not support instruction emulation
which necessitated the use of x2apic to access the local apic. This is no
longer the case and the dependency on x2apic has gone away.
The x2apic patches can be considered independently of bhyve and will be
merged into head via projects/x2apic.
Discussed with: grehan
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identical to the one in HEAD.
Obtained from: NetApp
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'GENERIC' works fine.
Obtained from: NetApp
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in <machine/cpufunc.h> so remove them from there.
Obtained from: NetApp
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the guest to execute real or unpaged protected mode code - bhyve relies on
this feature to execute the AP bootstrap code.
Get rid of the hack that allowed bhyve to support SMP guests on processors
that do not have the "unrestricted guest" capability. This hack was entirely
FreeBSD-specific and would not work with any other guest OS.
Instead, limit the number of vcpus to 1 when executing on processors without
"unrestricted guest" capability.
Suggested by: grehan
Obtained from: NetApp
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x2apic mode on the guest.
The guest can decide whether or not it wants to use legacy mmio or x2apic
access to the APIC by writing to the MSR_APICBASE register.
Obtained from: NetApp
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Provide a tunable 'machdep.x2apic_desired' to let the administrator override
the default behavior.
Provide a read-only sysctl 'machdep.x2apic' to let the administrator know
whether the kernel is using x2apic or legacy mmio to access local apic.
Tested with Parallels Desktop 8 and bhyve hypervisors.
Also tested running on bare metal Intel Xeon E5-2658.
Obtained from: NetApp
Discussed with: jhb, attilio, avg, grehan
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of group1 0x81 instructions that use the reg bits as an
extended opcode.
Still todo: properly update rflags.
Pointed out by: jilles@
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Pointed out by: emaste
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by clang in the local APIC code.
0x81 is a read-modify-write instruction - the EPT check
that only allowed read or write and not both has been
relaxed to allow read and write.
Reviewed by: neel
Obtained from: NetApp
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emulation is in place.
Obtained from: NetApp
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failure. The conversion from the return value to HANDLED or UNHANDLED can be
done locally in vmx_exit_process().
Obtained from: NetApp
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On a nested page table fault the hypervisor will:
- fetch the instruction using the guest %rip and %cr3
- decode the instruction in 'struct vie'
- emulate the instruction in host kernel context for local apic accesses
- any other type of mmio access is punted up to user-space (e.g. ioapic)
The decoded instruction is passed as collateral to the user-space process
that is handling the PAGING exit.
The emulation code is fleshed out to include more addressing modes (e.g. SIB)
and more types of operands (e.g. imm8). The source code is unified into a
single file (vmm_instruction_emul.c) that is compiled into vmm.ko as well
as /usr/sbin/bhyve.
Reviewed by: grehan
Obtained from: NetApp
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In the case where the underlying host had disabled MSI-X via the
"hw.pci.enable_msix" tunable, the ppt_setup_msix() function would fail
and return an error without properly cleaning up. This in turn would
cause a page fault on the next boot of the guest.
Fix this by calling ppt_teardown_msix() in all the error return paths.
Obtained from: NetApp
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integers.
Obtained from: NetApp
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Return 0's for now.
Reviewed by: neel
Obtained from: NetApp
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between inline asm statements that would in turn modify the flags
value set by the first asm, and used by the second.
Solve by making the common error block a string that can be pulled
into the first inline asm, and using symbolic labels for asm variables.
bhyve can now build/run fine when compiled with clang.
Reviewed by: neel
Obtained from: NetApp
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to vmcs_getreg(). Without this conversion vmcs_getreg() will return EINVAL.
In particular this prevented injection of the breakpoint exception into the
guest via the "-B" option to /usr/sbin/bhyve which is hugely useful when
debugging guest hangs.
This was broken in r241921.
Pointy hat: me
Obtained from: NetApp
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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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vm page allocators do. This fixes a panic when a virtio block
device is mounted as root, with the host system dying in
vm_page_dirty with invalid bits.
Reviewed by: neel
Obtained from: NetApp
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guest does a vm exit.
This allows us to trap any fpu access in the host context while the fpu still
has "dirty" state belonging to the guest.
Reported by: "s vas" on freebsd-virtualization@
Obtained from: NetApp
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host cpu to the scheduler until the guest is ready to run again.
This implies that the host cpu utilization will now closely mirror the actual
load imposed by the guest vcpu.
Also, the vcpu mutex now needs to be of type MTX_SPIN since we need to acquire
it inside a critical section.
Obtained from: NetApp
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to properly intercept it.
Obtained from: NetApp
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Also add a stats counter to count the number of NMIs delivered per vcpu.
Obtained from: NetApp
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If an IPI was delivered to this cpu before interrupts were disabled
then return right away via vmx_setjmp() with a return value of VMX_RETURN_AST.
Obtained from: NetApp
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This information will be used in conjunction with guest "HLT exiting" to
yield the thread hosting the virtual cpu.
Obtained from: NetApp
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the paging exit in preparation for a rework of
bhyve MMIO handling.
Reviewed by: neel
Obtained from: NetApp
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This also gets rid of all the witness.watch warnings related to calling
malloc(M_WAITOK) while holding a mutex.
Reviewed by: grehan
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destruction for calling malloc() with M_WAITOK while holding a mutex.
Do not allow vmm.ko to be unloaded until all virtual machines are destroyed.
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Prior to this change the MSI was being delivered unconditionally to vcpu 0
regardless of how the guest programmed the MSI delivery.
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It is no longer necessary to hard-partition the memory between the host
and guests at boot time.
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