freebsd-skq/sys/amd64
Konstantin Belousov 9840c7373c Reserve page at the physical address zero on amd64.
We always zero the invalidated PTE/PDE for superpage, which means that
L1TF CPU vulnerability (CVE-2018-3620) can be only used for reading
from the page at zero.

Note that both i386 and amd64 exclude the page from phys_avail[]
array, so this change is redundant, but I think that phys_avail[] on
UEFI-boot does not need to do that.  Eventually the blacklisting
should be made conditional on CPUs which report that they are not
vulnerable to L1TF.

Reviewed by:	emaste. jhb
Sponsored by:	The FreeBSD Foundation
2018-08-14 17:14:33 +00:00
..
acpica Rename assym.s to assym.inc 2018-03-20 17:58:51 +00:00
amd64 Reserve page at the physical address zero on amd64. 2018-08-14 17:14:33 +00:00
cloudabi32 Use TO_PTR() to convert integers to pointers. 2017-11-26 14:45:56 +00:00
cloudabi64 Use TO_PTR() to convert integers to pointers. 2017-11-26 14:45:56 +00:00
conf COMPAT_LINUX32 has not depended on COMPAT_43 in some time. 2018-07-31 21:40:13 +00:00
ia32 Use SMAP on amd64. 2018-07-29 20:47:00 +00:00
include amd64: ensure that curproc->p_vmspace pmap always matches PCPU 2018-08-14 16:37:14 +00:00
linux Futex support functions in linux.ko and linux32.ko on amd64 should be 2018-08-07 18:29:10 +00:00
linux32 Futex support functions in linux.ko and linux32.ko on amd64 should be 2018-08-07 18:29:10 +00:00
pci sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
sgx Rename assym.s to assym.inc 2018-03-20 17:58:51 +00:00
vmm - Add the ability to run bhyve(8) within a jail(8). 2018-08-01 00:39:21 +00:00
Makefile Bring the tags and links entries for amd64 up to date. 2015-10-27 22:59:24 +00:00