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ac90f70d1e
freebsd-skq/sys
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Alexander Motin ac90f70d1e Increase nvme(4) maximum transfer size from 1MB to 2MB. 
With 4KB page size the 2MB is the maximum we can address with one page PRP.
Going further would require chaining, that would add some more complexity.

On the other side, to reduce memory consumption, allocate the PRP memory
respecting maximum transfer size reported in the controller identify data.
Many of NVMe devices support much smaller values, starting from 128KB.
To do that we have to change the initialization sequence to pull the data
earlier, before setting up the I/O queue pairs.  The admin queue pair is
still allocated for full MIN(maxphys, 2MB) size, but it is not a big deal,
since there is only one such queue with only 16 trackers.

Reviewed by:	imp
MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
2020-11-29 00:20:31 +00:00
..
amd64 Convert vmm_ops calls to IFUNC 2020-11-28 01:16:59 +00:00
arm Remove now unused armv4 and not-INTRNG files. 2020-11-28 15:00:08 +00:00
arm64 arm64: Do not rely on SPCR table to detect acpi 2020-11-26 20:22:34 +00:00
bsm
cam Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
cddl [cddl] Fix lz4 function definitions to not tri pup compile. 2020-11-17 17:11:07 +00:00
compat Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
conf Remove now unused armv4 and not-INTRNG files. 2020-11-28 15:00:08 +00:00
contrib Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
crypto Check cipher key lengths during probesession. 2020-11-05 23:31:58 +00:00
ddb db_search_symbol: prevent pollution from bogus symbols 2020-10-26 16:42:53 +00:00
dev Increase nvme(4) maximum transfer size from 1MB to 2MB. 2020-11-29 00:20:31 +00:00
dts Brand our DTS with the Linux version it was imported from 2020-10-10 07:18:51 +00:00
fs Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
gdb gdb(4): Don't escape GDB special characters at application layer 2020-09-30 14:55:54 +00:00
geom Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
gnu Brand our DTS with the Linux version it was imported from 2020-10-10 07:18:51 +00:00
i386 o Move options IOMMU from Debugging section back to the Bus section 2020-11-27 21:37:48 +00:00
isa
kern Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
kgssapi State kgssapi dependency on xdr. 2020-09-17 22:29:38 +00:00
libkern arc4random(9): Integrate with RANDOM_FENESTRASX push-reseed 2020-10-10 21:48:06 +00:00
mips Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
modules Add watchdog(9) driver for the Fintek F81803 SuperIO chip 2020-11-28 22:34:33 +00:00
net Add nhgrp_get_idx() as a counterpart for nhop_get_idx(). 2020-11-28 15:46:40 +00:00
net80211 net80211: fix a typo 2020-11-04 12:07:33 +00:00
netgraph ng_nat: unbreak ABI 2020-11-10 02:26:44 +00:00
netinet Fix two occurences of a typo in a comment introduced in r367530. 2020-11-23 10:13:56 +00:00
netinet6 IPv6: set ifdisabled in the kernel rather than in rc 2020-11-25 20:58:01 +00:00
netipsec Trigger soft lifetime expiration on sequence number 2020-10-16 11:27:01 +00:00
netpfil pf: Make tag hashing more robust 2020-11-24 16:18:47 +00:00
netsmb net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
nfs nfs: clean up empty lines in .c and .h files 2020-09-01 21:25:39 +00:00
nfsclient nfs: clean up empty lines in .c and .h files 2020-09-01 21:25:39 +00:00
nfsserver nfs: Mark unused statistics variable as reserved 2020-11-18 04:35:49 +00:00
nlm nlm: clean up empty lines in .c and .h files 2020-09-01 22:14:52 +00:00
ofed Fix for referencing file via its vnode in ibore. 2020-11-02 10:44:29 +00:00
opencrypto Remove the cloned file descriptors for /dev/crypto. 2020-11-25 00:10:54 +00:00
powerpc Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
riscv Add .cfi_{start,end}proc for RISC-V assembly functions 2020-11-26 17:37:22 +00:00
rpc Fix a potential memory leak in the NFS over TLS handling code. 2020-09-05 00:50:52 +00:00
security pipe: allow for lockless pipe_stat 2020-11-19 06:30:25 +00:00
sys Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
teken Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
tests Add small tool to invoke kernel test framework tests. 2020-09-02 09:20:40 +00:00
tools Brand our DTS with the Linux version it was imported from 2020-10-10 07:18:51 +00:00
ufs Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
vm Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
x86 Add device_t member to struct iommu. 2020-11-16 15:29:52 +00:00
xdr xdr: clean up empty lines in .c and .h files 2020-09-01 22:13:28 +00:00
xen xen: clean up empty lines in .c and .h files 2020-09-01 21:21:55 +00:00
Makefile