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2fd0c8e7ca
freebsd-dev/sys
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Konstantin Belousov 2fd0c8e7ca Provide pmap_large_map() KPI on amd64. 
The KPI allows to map very large contigous physical memory regions
into KVA, which are not covered by DMAP.

I see both with QEMU and with some real hardware started shipping, the
regions for NVDIMMs might be very far apart from the normal RAM, and
we expect that at least initial users of NVDIMM could install very
large amount of such memory.  IMO it is not reasonable to extend DMAP
to cover that far-away regions both because it could overflow existing
4T window for DMAP in KVA, and because it costs in page table pages
allocations, for gap and for possibly unused NV RAM.

Also, KPI provides some special functionality for fast cache flushing
based on the knowledge of the NVRAM mapping use.

Reviewed by:	alc, markj
Sponsored by:	The FreeBSD Foundation
Approved by:	re (gjb)
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D17070
2018-10-16 17:28:10 +00:00
..
amd64 Provide pmap_large_map() KPI on amd64. 2018-10-16 17:28:10 +00:00
arm Enable Capsicum on armv6/armv7 2018-09-13 21:00:17 +00:00
arm64 Address the warning regarding duplicate option 'GEOM_PART_GPT' when 2018-10-07 15:54:13 +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 support for Error Recovery 2018-10-15 18:39:33 +00:00
dts arm64: Add DTS overlays for A64 2018-08-24 15:00:36 +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 Plug sendfile(2) on a listening socket with proper error code. 2018-10-16 15:57:16 +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 iavf(4): Finish rename/rebrand internally 2018-10-15 17:23:41 +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 Invalidate TLB on a local hart. 2018-10-16 16:03:17 +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 capsicum: provide cap_rights_fde_inline 2018-10-12 23:48:10 +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