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15 Commits

Author SHA1 Message Date
neel
e3e8a520e2 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
97c20149fa 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
ca6e3cf930 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
18dd2c0d51 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
77ab4804ac 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
3e50e0220b 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
bc87f08e98 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
5dbc1ca26a 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
bc269b51af 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
ebdd69568d 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
34b672cc8a 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
grehan
94d2b7f649 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
grehan
2c6741be0f IFC @ r222830 2011-06-28 06:26:03 +00:00
jhb
f115a4513c 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
grehan
d45b7f14ae 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