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opnsense-src/sys/x86/include
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Ed Maste b3327f62f0 Enable KPTI by default on amd64 for non-AMD CPUs 
Kernel Page Table Isolation (KPTI) was introduced in r328083 as a
mitigation for the 'Meltdown' vulnerability.  AMD CPUs are not affected,
per https://www.amd.com/en/corporate/speculative-execution:

    We believe AMD processors are not susceptible due to our use of
    privilege level protections within paging architecture and no
    mitigation is required.

Thus default KPTI to off for AMD CPUs, and to on for others.  This may
be refined later as we obtain more specific information on the sets of
CPUs that are and are not affected.

Submitted by:	Mitchell Horne
Reviewed by:	cem
Relnotes:	Yes
Security:	CVE-2017-5754
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D13971
2018-01-19 15:42:34 +00:00
..
xen xen: Code cleanup and small bug fixes 2015-10-21 10:44:07 +00:00
_align.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
_inttypes.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
_limits.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
_stdint.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
_types.h Remove lint support from system headers and MD x86 headers. 2017-11-23 11:40:16 +00:00
acpica_machdep.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
apicreg.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
apicvar.h PTI for amd64. 2018-01-17 11:44:21 +00:00
apm_bios.h Move identical copies of apm_bios.h to sys/x86/include, replace them with 2010-11-11 19:36:21 +00:00
bus.h amd64: Add a 48-bit MAXADDR constant 2018-01-13 17:55:22 +00:00
bus_dma.h Clean up MD pollution of bus_dma.h: 2017-07-01 05:35:29 +00:00
busdma_impl.h Add support for NUMA domains to bus dma tags. This causes all memory 2018-01-12 23:34:16 +00:00
cputypes.h Remove 'cpu' and 'cpu_class' on amd64. 2016-09-15 17:05:54 +00:00
dump.h Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
elf.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
endian.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
fdt.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
float.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
fpu.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
frame.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
init.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
legacyvar.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
mca.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
metadata.h Move amd64 metadata.h to x86 and share with i386 2016-01-07 19:47:26 +00:00
mptable.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
ofw_machdep.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
pci_cfgreg.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
psl.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ptrace.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pvclock.h Add interface to derive a TSC frequency from the pvclock 2015-02-04 08:33:04 +00:00
reg.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
segments.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
setjmp.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
sigframe.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
signal.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
specialreg.h Enumerate and print Intel CPU features for Speculative Execution Side 2018-01-14 12:36:23 +00:00
stack.h Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
stdarg.h Introduce an architecture-agnostic <sys/_stdarg.h> to reduce 2017-12-25 20:54:00 +00:00
sysarch.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
trap.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ucontext.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
vdso.h sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
vmware.h Detect whether x2APIC on VMWare is usable without interrupt 2015-02-14 09:00:12 +00:00
x86_smp.h SPDX: use the Beerware identifier. 2017-11-30 20:33:45 +00:00
x86_var.h Enable KPTI by default on amd64 for non-AMD CPUs 2018-01-19 15:42:34 +00:00