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f76fc5d414
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17 Commits

Author SHA1 Message Date
Neel Natu
f76fc5d414 If the guest vcpu wants to idle then use that opportunity to relinquish the 
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
 2012-10-25 04:29:21 +00:00
Neel Natu
f352ff0ca8 Maintain state regarding NMI delivery to guest vcpu in VT-x independent manner. 
Also add a stats counter to count the number of NMIs delivered per vcpu.

Obtained from:	NetApp
 2012-10-24 02:54:21 +00:00
Neel Natu
75dd336603 Provide per-vcpu locks instead of relying on a single big lock. 
This also gets rid of all the witness.watch warnings related to calling
malloc(M_WAITOK) while holding a mutex.

Reviewed by:	grehan
 2012-10-12 18:32:44 +00:00
Neel Natu
cdc5b9e7b1 Fix warnings generated by 'debug.witness.watch' during VM creation and 
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.
 2012-10-11 19:39:54 +00:00
Neel Natu
7ce04d0ad9 Allocate memory pages for the guest from the host's free page queue. 
It is no longer necessary to hard-partition the memory between the host
and guests at boot time.
 2012-10-08 23:41:26 +00:00
Neel Natu
f7d51510f1 Change vm_malloc() to map pages in the guest physical address space in 4KB 
chunks. This breaks the assumption that the entire memory segment is
contiguously allocated in the host physical address space.

This also paves the way to satisfy the 4KB page allocations by requesting
free pages from the VM subsystem as opposed to hard-partitioning host memory
at boot time.
 2012-10-04 02:27:14 +00:00
Neel Natu
4db4fb2c25 Get rid of assumptions in the hypervisor that the host physical memory 
associated with guest physical memory is contiguous.

Add check to vm_gpa2hpa() that the range indicated by [gpa,gpa+len) is all
contained within a single 4KB page.
 2012-10-03 01:18:51 +00:00
Neel Natu
bda273f21e Get rid of assumptions in the hypervisor that the host physical memory 
associated with guest physical memory is contiguous.

Rewrite vm_gpa2hpa() to get the GPA to HPA mapping by querying the nested
page tables.
 2012-10-03 00:46:30 +00:00
Neel Natu
341f19c949 Get rid of assumptions in the hypervisor that the host physical memory 
associated with guest physical memory is contiguous.

In this case vm_malloc() was using vm_gpa2hpa() to indirectly infer whether
or not the address range had already been allocated.

Replace this instead with an explicit API 'vm_gpa_available()' that returns
TRUE if a page is available for allocation in guest physical address space.
 2012-09-29 01:15:45 +00:00
Neel Natu
73820fb0a4 Add an option "-a" to present the local apic in the XAPIC mode instead of the 
default X2APIC mode to the guest.
 2012-09-26 00:06:17 +00:00
Neel Natu
a2da7af6bc 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.
 2012-09-25 22:31:35 +00:00
Neel Natu
e90273829b Add ioctls to control the X2APIC capability exposed by the virtual machine to 
the guest.

At the moment this simply sets the state in the 'vcpu' instance but there is
no code that acts upon these settings.
 2012-09-25 19:08:51 +00:00
Neel Natu
98ed632c63 Stash the 'vm_exit' information in each 'struct vcpu'. 
There is no functional change at this time but this paves the way for vm exit
handler functions to easily modify the exit reason going forward.
 2012-09-24 19:32:24 +00:00
Peter Grehan
38f1b189cd IFC @ r234692 
sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

 - Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib
 2012-04-26 07:52:28 +00:00
Peter Grehan
a5615c9044 IFC @ r222830 2011-06-28 06:26:03 +00:00
John Baldwin
34a6b2d627 First cut at porting the kernel portions of 221828 and 221905 from the 
BHyVe reference branch to HEAD.
 2011-05-14 20:35:01 +00:00
Peter Grehan
366f60834f 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
 2011-05-13 04:54:01 +00:00