freebsd-dev/sys/amd64
Michael Reifenberger 1bc51bad2b Untangle TPR shadowing and APIC virtualization.
This speeds up Windows guests tremendously.

The patch does:
Add a new tuneable 'hw.vmm.vmx.use_tpr_shadowing' to disable TLP shadowing.
Also add 'hw.vmm.vmx.cap.tpr_shadowing' to be able to query if TPR shadowing is used.

Detach the initialization of TPR shadowing from the initialization of APIC virtualization.
APIC virtualization still needs TPR shadowing, but not vice versa.
Any CPU that supports APIC virtualization should also support TPR shadowing.

When TPR shadowing is used, the APIC page of each vCPU is written to the VMCS_VIRTUAL_APIC field of the VMCS
so that the CPU can write directly to the page without intercept.

On vm exit, vlapic_update_ppr() is called to update the PPR.

Submitted by:	Yamagi Burmeister
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D22942
2020-03-10 16:53:49 +00:00
..
acpica Merge ACPICA 20190329. 2019-03-29 20:21:28 +00:00
amd64 amd64 pmap.c: minor codegen optimization in flag access 2020-02-28 18:32:40 +00:00
cloudabi32 Use uintptr_t instead of register_t * for the stack base. 2019-12-03 23:17:54 +00:00
cloudabi64 Use uintptr_t instead of register_t * for the stack base. 2019-12-03 23:17:54 +00:00
conf [aacraid] Port driver to big-endian 2020-03-05 20:04:41 +00:00
ia32 Use uintptr_t instead of register_t * for the stack base. 2019-12-03 23:17:54 +00:00
include amd64 atomic.h: minor codegen optimization in flag access 2020-02-28 18:32:36 +00:00
linux linuxulator: implement sendfile 2020-02-05 16:53:02 +00:00
linux32 Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
pci pci_cfgreg.c: Use io port config access for early boot time. 2019-04-09 18:07:17 +00:00
sgx Fix a few places that free a page from an object without busy held. This is 2019-12-02 22:42:05 +00:00
vmm Untangle TPR shadowing and APIC virtualization. 2020-03-10 16:53:49 +00:00
Makefile Bring the tags and links entries for amd64 up to date. 2015-10-27 22:59:24 +00:00