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37b0ea8c02
freebsd-skq/sys
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br 37b0ea8c02 Support RISC-V implementations that do not manage the A and D bits 
(e.g. RocketChip, lowRISC and derivatives).

RISC-V page table entries support A (accessed) and D (dirty) bits. The
spec makes hardware support for these bits optional. Implementations that
do not manage these bits in hardware raise page faults for accesses to a
valid page without A set and writes to a writable page without D set.
Check for these types of faults when handling a page fault and fixup the
PTE without calling vm_fault if they occur.

Reviewed by:	jhb, markj
Approved by:	re (gjb)
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D17424
2018-10-18 15:08:14 +00:00
..
amd64 Provide pmap_large_map() KPI on amd64. 2018-10-16 17:28:10 +00:00
arm Support RISC-V implementations that do not manage the A and D bits 2018-10-18 15:08:14 +00:00
arm64 MFH r339206-r339212, r339215-r339239 2018-10-08 18:06:40 +00:00
bsm
cam Move 32-bit compat support for CDIOREADTOCENTRYS to the right place. 2018-10-02 23:23:56 +00:00
cddl Skip VDEV_IO_DONE stage only for ZIO_TYPE_FREE. 2018-10-15 21:59:24 +00:00
compat Correct COMPAT* macro names in syscalls.master 2018-10-15 21:35:57 +00:00
conf Update head from ALPHA9 to ALPHA10 as part of the 12.0-RELEASE 2018-10-16 14:16:39 +00:00
contrib Import CK as of commit 5221ae2f3722a78c7fc41e47069ad94983d3bccb. 2018-10-16 02:30:13 +00:00
crypto Reapply, with minor tweaks, r338025, from the original commit: 2018-09-26 17:12:14 +00:00
ddb add an option for ddb ps command to print process arguments 2018-08-09 11:21:31 +00:00
dev Add initial driver for ACPI NFIT-enumerated NVDIMMs. 2018-10-16 20:12:35 +00:00
dts Support RISC-V implementations that do not manage the A and D bits 2018-10-18 15:08:14 +00:00
fs MFH r338661 through r339253. 2018-10-09 14:27:55 +00:00
gdb
geom MFH r338661 through r339200. 2018-10-05 17:53:47 +00:00
gnu dts: Import DTS for arm64 2018-08-23 13:21:01 +00:00
i386 Regenerated assorted syscall related files after: 2018-10-09 20:42:17 +00:00
isa Reapply, with minor tweaks, r338025, from the original commit: 2018-09-26 17:12:14 +00:00
kern Fix typos from r339409. 2018-10-18 15:02:57 +00:00
kgssapi OpenCrypto: Convert sessions to opaque handles instead of integers 2018-07-18 00:56:25 +00:00
libkern Sync strlcpy with userland version, again 2018-06-21 17:35:13 +00:00
mips Re-enable kernel modules for the MALTA64EL kernel configuration. 2018-09-06 19:21:31 +00:00
modules Fix modules/nvdimm build issues after r339391 by adding a dependency 2018-10-18 00:51:42 +00:00
net Fix deadlock when destroying VLANs. 2018-10-15 10:29:29 +00:00
net80211 Fix misspellings of transmitter/transmitted 2018-08-10 20:37:32 +00:00
netgraph Remove the Yarrow PRNG algorithm option in accordance with due notice 2018-08-26 12:51:46 +00:00
netinet In r338102, the TCP reassembly code was substantially restructured. Prior 2018-10-16 14:41:09 +00:00
netinet6 MFH r338661 through r339253. 2018-10-09 14:27:55 +00:00
netipsec Fix witness warning in xform_init(). 2018-09-26 14:47:51 +00:00
netpfil Add extra parentheses to fix "versrcreach" opcode, (oif != NULL) should 2018-10-15 10:25:34 +00:00
netsmb Make timespecadd(3) and friends public 2018-07-30 15:46:40 +00:00
nfs Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
nfsclient
nfsserver
nlm
ofed Introduce and use sgid_index in CM requests in ibcore. 2018-09-09 07:20:15 +00:00
opencrypto Add per-session locking to cryptosoft (swcr). 2018-09-26 20:23:12 +00:00
powerpc Initialize SPRG0 before its first possible use 2018-10-15 16:43:07 +00:00
riscv Support RISC-V implementations that do not manage the A and D bits 2018-10-18 15:08:14 +00:00
rpc Set SO_SNDTIMEO in the client side krpc when CLSET_TIMEOUT is done. 2018-07-20 12:03:16 +00:00
security Rework the logic around quick checks for auditing that take place at 2018-10-02 15:58:17 +00:00
sparc64 Prepare the kernel linker to handle PC-relative ifunc relocations. 2018-08-22 20:44:30 +00:00
sys Add a new jail permission, allow.read_msgbuf. When true, jailed processes 2018-10-17 16:11:43 +00:00
teken teken: Fix sequences header which was crossing the 80-col boundary 2018-05-29 08:41:44 +00:00
tests epoch_test: fix compile 2018-07-15 00:31:17 +00:00
tools make_dtb: Always add root directory in the include path 2018-08-23 13:23:21 +00:00
ufs Correct panic messages. 2018-09-22 17:05:49 +00:00
vm eliminate locking surrounding ui_vmsize and swap reserve by using atomics 2018-10-05 05:50:56 +00:00
x86 Provide string functions for use before ifuncs get resolved. 2018-10-11 23:28:04 +00:00
xdr
xen xen: legacy PVH fixes for the new interrupt count 2018-09-13 07:14:11 +00:00
Makefile