neel d9f07f9841 Simplify instruction restart logic in bhyve. ... Keep track of the next instruction to be executed by the vcpu as 'nextrip'. As a result the VM_RUN ioctl no longer takes the %rip where a vcpu should start execution. Also, instruction restart happens implicitly via 'vm_inject_exception()' or explicitly via 'vm_restart_instruction()'. The APIs behave identically in both kernel and userspace contexts. The main beneficiary is the instruction emulation code that executes in both contexts. bhyve(8) VM exit handlers now treat 'vmexit->rip' and 'vmexit->inst_length' as readonly: - Restarting an instruction is now done by calling 'vm_restart_instruction()' as opposed to setting 'vmexit->inst_length' to 0 (e.g. emulate_inout()) - Resuming vcpu at an arbitrary %rip is now done by setting VM_REG_GUEST_RIP as opposed to changing 'vmexit->rip' (e.g. vmexit_task_switch()) Differential Revision: https://reviews.freebsd.org/D1526 Reviewed by: grehan MFC after: 2 weeks		2015-01-18 03:08:30 +00:00
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acpica	don't set CR4 PSE bit on amd64	2014-07-23 15:53:29 +00:00
amd64	Revert r263475: TDP_DEVMEMIO no longer needed, since amd64 /dev/kmem	2015-01-12 08:58:07 +00:00
conf	Plug cxgbe(4) back into !powerpc && !arm builds, instead of building it	2015-01-16 01:39:24 +00:00
ia32	Change the way the lcall $7,$0 is reflected to usermode. Instead of	2014-12-27 23:19:08 +00:00
include	Simplify instruction restart logic in bhyve.	2015-01-18 03:08:30 +00:00
linux32	Regen after r276508, r276509.	2015-01-01 18:43:31 +00:00
pci	Pull in r267961 and r267973 again. Fix for issues reported will follow.	2014-06-28 03:56:17 +00:00
vmm	Simplify instruction restart logic in bhyve.	2015-01-18 03:08:30 +00:00
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