As noted in the removed comment, it is possible and not prohibitively
costly to look up the swap blocks for the given page index. Implement
a swap_pager_find_least() function to do that, and use it to iterate
simultaneously over both backing object page queue and swap
allocations when looking for shadowed pages.
Testing shows that number of new succesful scans, enabled by this
addition, is small but non-zero. When worked out, the change both
further reduces the depth of the shadow object chain, and frees unused
but allocated swap and memory.
Suggested and reviewed by: alc
Tested by: pho (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
enabled. This results in a -Werror warning in mlx4ib:
sys/dev/mlx4/mlx4_ib/mlx4_ib_sysfs.c:90:22: error: format specifies type 'unsigned long long *' but the argument has type 'u64 *' (aka 'unsigned long *') [-Werror,-Wformat]
sscanf(buf, "%llx", &sysadmin_ag_val);
~~~~ ^~~~~~~~~~~~~~~~
Change sysadmin_ag_val to unsigned long long to avoid the warning.
Reviewed by: hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D8831
As cs is stored in a uint32_t, use the last bit to store the
active high flag as it's unlikely that we will have that much CS.
Reviewed by: loos
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D8614
Instead of repeating "%s, Revision %s" "(%s %s)" in each loader, just
create the full version string in vers.c
Reviewed by: bapt
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D8823
virtio_pci was missing from the GENERIC arm64 configuration, while
other virtio devices are present. Adding it will allow us to boot
the GENERIC kernel on QEMU with virtio storage and networking.
In case where GICD_CTLR.DS is 1, the IGROUPR registers are RW in
non-secure state and has to be initialized to 1 for the
corresponding interrupts to be delivered as Group 1 interrupts.
Update gic_v3_dist_init() and gic_v3_redist_init() to initialize
GICD_IGROUPRn and GICR_IGROUPRn respectively to address this. The
registers can be set unconditionally since the writes are ignored
in non-secure state when GICD_CTLR.DS is 0.
This fixes the hang on boot seen when running qemu-system-aarch64
with machine virt,gic-version=3
Remove unused fields from uart_pl011_softc. Add an interrupt mask
field to the softc and use it to set the interrupt mask register.
There should be no functional change introduced here except in the
grab and ungrab functions. In these functions, we now disable and
enable all interrupts rather than just the receive interrupt.
If you run "ifconfig lagg0 destroy" and "ifconfig lagg0" at the same time a
page fault may result. The first process will destroy ifp->if_lagg in
lagg_clone_destroy (called by if_clone_destroy). Then the second process
will observe that ifp->if_lagg is NULL at the top of lagg_port_ioctl and
goto fallback: where it will promptly dereference ifp->if_lagg anyway.
The solution is to repeat the NULL check for ifp->if_lagg
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D8512
Make st_data part of spigen_transfer optional by letting pass zero length
and NULL pointer. SPI controller drivers handle this case fine.
MFC after: 1 week
Apparently stdatomic.h implementation for gcc 4.2 on sparc64 does not
work properly. This effectively reverts r251803.
Reported and tested by: lidl
Discussed with: ed
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
memory-mapped devices that are normally PCIe drives. Devices can then use
the existing pci_get_class, etc. accessors to query this data.
The ivar values are different enough from the existing ACPI and ISA values
to not conflict.
Reviewed by: jhb
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D8721
Replace them with a default handler that returns devmap_lastaddr.
Reviewed by: mmel
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D8806
- Disable features that are not supported or not used on FreeBSD.
- Increase the RSS table slice per interface.
- Increase the share of the TCAM reserved for filtering.
MFH: 2 weeks
Sponsored by: Chelsio Communications
When importing for r309309, as part of conflict resolution, too much extra was
removed, resulting in bad disassembly for branches. Correct this.
Also re-apply the 0->NULL change from r298052.
X-MFC-With: r309309
This is a work in progress and some of this stuff may change;
but hopefully I'm laying down enough stuff and space in fields
to allow it to grow without another major recompile.
We'll see!
* Add a net80211 PHY type for VHT 2G and VHT 5G.
Note - yes, VHT is supposed to be for 5GHZ, however some vendors
(*cough* most of them) support some subset of VHT rate support
in 2GHz. No - not 80MHz wide channels, but at least some MCS8-9
support, maybe some beamforming, and maybe some longer A-MPDU
aggregates. I don't want to even think about MU-MIMO on 2GHz.
* Add an ifmedia placeholder type for VHT rates.
* Add channel flags for VHT, VHT20/40U/40D/80/80+80/160
* Add channel macros for the above
* Add ieee80211_channel fields for the VHT information and flags,
along with some padding (so this struct definitely grows.)
* Add a phy type flag for VHT - 'v'
* Bump the number of channels to a much higher amount - until we get
something like the linux mac80211 chanctx abstraction (where the
stack provides a current channel configuration via callbacks,
versus the driver ever checking ic->ic_curchan or similar) we'll
have to populate VHT+HT combinations.
Eg, there'll likely be a full set of duplicate VHT20/40 channels to match
HT channels. There will also be a full set of duplicate VHT80 channels -
note that for VHT80, its assumed you're doing VHT40 as a base, so we
don't need a duplicate of VHT80 + 20MHz only primary channels, only
a duplicate of all the VHT40 combinations.
I don't want to think about VHT80+80 or VHT160 for now - and I won't,
as the current device I'm doing 11ac bringup on (QCA9880) only does
VHT80.
I'll likely revisit the channel configuration and scanning related
stuff after I get VHT20/40 up.
* Add vht flags and the basic MCS rate setup to ieee80211com, ieee80211vap
and ieee80211_node in preparation for 11ac configuration.
There is zero code that uses this right now.
* Whilst here, add some more placeholders in case I need to extend
out things by some uint32_t flag sized fields. Hopefully I won't!
What I haven't yet done:
* any of the code that uses this
* any of the beamforming related fields
* any of the MU-MIMO fields required for STA/AP operation
* any of the IE fields in beacon frame / probe request/response handling
and the calculations required for shifting beacon contents around
when the TIM grows/shrinks
This will require a full rebuild of net80211 related programs -
ifconfig, hostapd, wpa_supplicant.
The kernel builds reproducibly, except for the time, date, user, and
hostname baked into the kernel (reported at startup and via the
kern.version sysctl for uname). Add a build knob to disable the
inclusion of this metadata.
Reviewed by: jhb
MFC after: 1 month
Relnotes: Yes
Sponsored by: Reproducible Builds World Summit 2, Berlin
Differential Revision: https://reviews.freebsd.org/D8809
Build metadata (username, hostname, etc.) prevents the FreeBSD kernel
from building reproducibly. Add an option to disable inclusion of that
metadata but retain the release information and SVN/git VCS details.
See https://reproducible-builds.org/ for additional background.
Reviewed by: bapt
Obtained from: NetBSD
MFC after: 1 month
Sponsored by: Reproducible Builds World Summit 2, Berlin
Differential Revision: https://reviews.freebsd.org/D4347
This paves way to implement VDSO for the enlightened time counter.
Reviewed by: kib
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8768
The object is not yet fully constructed and must not be available to
other threads. This makes default_pager_alloc() almost identical to
swap_pager_alloc_init().
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
feature_barrier and feature_flush variables. Otherwise, adjacent
variables on the stack, such as sector_size, may be overwritten, with
disastrous results.
Note that I did not see a good reason to revert the addition of zero
checks introduced in r310013. Better safe than sorry.
PR: 215209
Tested by: royger
MFC after: 3 days
The MCA taskqueue is not initialized until some time after CMCIs are
enabled on the BSP.
Reviewed by: cem, jhb
MFC after: 1 week
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8783
in this file actually described the operation of the swap pager, not the
default pager. Given that this is the wrong place to discuss the
implementation of the swap pager, it shouldn't come as a surprise that as
the swap pager evolved these comments became increasingly stale. In
addition, apply some style fixes, like modernizing a few remaining old-
style function definitions.
Reviewed by: kib, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D8781
