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opnsense-src/sys/amd64/vmm/intel
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Konstantin Belousov 2343757338 Align IA32_ARCH_CAP MSR definitions and use with SDM rev. 068. 
SDM rev. 068 was released yesterday and it contains the description of
the MSR 0x10a IA32_ARCH_CAP. This change adds symbolic definitions for
all bits present in the document, and decode them in the CPU
identification lines printed on boot.

But also, the document defines SSB_NO as bit 4, while FreeBSD used but
2 to detect the need to work-around Speculative Store Bypass
issue.  Change code to use the bit from SDM.

Similarly, the document describes bit 3 as an indicator that L1TF
issue is not present, in particular, no L1D flush is needed on
VMENTRY.  We used RDCL_NO to avoid flushing, and again I changed the
code to follow new spec from SDM.

In fact my Apollo Lake machine with latest ucode shows this:
    IA32_ARCH_CAPS=0x19<RDCL_NO,SKIP_L1DFL_VME,SSB_NO>

Reviewed by:	bwidawsk
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Differential revision:	https://reviews.freebsd.org/D18006
2018-11-16 21:27:11 +00:00
..
ept.c sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
ept.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
vmcs.c Provide further mitigation against CVE-2017-5715 by flushing the 2018-02-12 14:45:27 +00:00
vmcs.h Provide basic descriptions for VMX exit reason (from "Intel 64 and IA-32 2018-10-27 21:24:28 +00:00
vmx.c Align IA32_ARCH_CAP MSR definitions and use with SDM rev. 068. 2018-11-16 21:27:11 +00:00
vmx.h Provide further mitigation against CVE-2017-5715 by flushing the 2018-02-12 14:45:27 +00:00
vmx_controls.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
vmx_cpufunc.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
vmx_genassym.c Provide part of the mitigation for L1TF-VMM. 2018-08-14 17:29:41 +00:00
vmx_msr.c sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
vmx_msr.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
vmx_support.S Update L1TF workaround to sustain L1D pollution from NMI. 2018-08-19 18:47:16 +00:00
vtd.c sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00