freebsd-nq/sys/x86/include
Konstantin Belousov 17edf152e5 Control for Special Register Buffer Data Sampling mitigation.
New microcode update for Intel enables mitigation for SRBDS, which
slows down RDSEED and related instructions.  The update also provides
a control to limit the mitigation to SGX enclaves, which should
restore the speed of random generator by the cost of potential
cross-core bufer sampling.

See https://software.intel.com/security-software-guidance/insights/deep-dive-special-register-buffer-data-sampling

GIve the user control over it.

Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D25221
2020-06-12 22:14:45 +00:00
..
xen
_align.h
_inttypes.h
_limits.h
_stdint.h
_types.h i386: Merge PAE and non-PAE pmaps into same kernel. 2019-01-30 02:07:13 +00:00
acpica_machdep.h
apicreg.h
apicvar.h Reimplement stack capture of running threads on i386 and amd64. 2020-01-31 15:43:33 +00:00
apm_bios.h
bus_dma.h bus_dma_dmar_load_ident(9): load identity mapping into the map. 2019-11-27 19:57:17 +00:00
bus.h Port the NetBSD KCSAN runtime to FreeBSD. 2019-11-21 11:22:08 +00:00
busdma_impl.h Allow loading the same DMA address multiple times without any prior 2019-05-16 17:41:16 +00:00
cputypes.h Add support for Hygon Dhyana Family 18h processor. 2020-01-21 13:22:35 +00:00
dump.h
elf.h
endian.h
fdt.h
float.h
fpu.h
frame.h
ifunc.h Remove resolver_qual from DEFINE_IFUNC/DEFINE_UIFUNC macros. 2019-05-16 22:20:54 +00:00
init.h
intr_machdep.h Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
legacyvar.h
mca.h
metadata.h
mptable.h
ofw_machdep.h
pci_cfgreg.h pci_cfgreg.c: Use io port config access for early boot time. 2019-04-09 18:07:17 +00:00
procctl.h amd64 KPTI: add control from procctl(2). 2019-03-16 11:44:33 +00:00
psl.h
ptrace.h
pvclock.h
reg.h
segments.h
setjmp.h
sigframe.h
signal.h
specialreg.h x86: add bits definitions for SRBDS mitigation control. 2020-06-12 22:12:57 +00:00
stack.h Reimplement stack capture of running threads on i386 and amd64. 2020-01-31 15:43:33 +00:00
stdarg.h
sysarch.h Add usermode helpers for for Intel userspace protection keys feature. 2019-02-20 09:56:23 +00:00
trap.h
ucode.h
ucontext.h
vdso.h
vmware.h
x86_smp.h amd64 pmap: reorder IPI send and local TLB flush in TLB invalidations. 2020-06-10 22:07:57 +00:00
x86_var.h Control for Special Register Buffer Data Sampling mitigation. 2020-06-12 22:14:45 +00:00