The previous default of "balanced" appears to have caused pathological
behavior, including very poor performance and 100% CPU load in the
arc_reclaim_thread.
The symptoms appeared when the daily periodic run started.
With this change, the system--and the ARC in particular--behaved
normally during a manual daily periodic run.
From Mark Johnston: The port of the balanced strategy is incomplete,
since arc_prune_async() is a no-op on FreeBSD. (This also seems
to imply that r337653 is a no-op.) After 12 is branched we can
port the remaining bits and consider changing the default back.
Submitted by: markj (essentially)
Reviewed by: markj
Approved by: re (gjb)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D17156
Reflect the fact that ig4(4) is not an Intel-specific device but
a driver for Synopsys DesignWare I2C controller that now ships in
AMD systems too.
Approved by: re (kib), rpokala
the hard-coded string "not available" to ensure reproducible builds.
Discussed with: emaste
Approved by: re (rgrimes)
Sponsored by: The FreeBSD Foundation
notices the missing ntpd user and refers to UPDATING. This change makes
it more clear which aspect of UPDATING is important for the ntpd change.
PR: 231334
Approved by: re (gjb)
Output padding is specified via outlen, which is set using the return value
of fprintf. Because it's printing that padding plus a trailing byte, it
grows by one each iteration rather than reflecting actual length.
Additionally, iec was sized improperly for scaling up similarly to si.
Fixing this revealed that the humanize_number(3) call to populate persec
was using the wrong width.
Submitted by: Thomas Hurst <tom@hur.st>
Reviewed by: imp
Approved by: re (kib)
Differential Revision: https://reviews.freebsd.org/D16960
r338642 toggled the REPRODUCIBLE_BUILD knob but missed the
corresponding kern.opts.mk change.
We want to build the 12.0 release artifacts with reproducible builds
mode enabled. Switch it on in HEAD now to enable testing with upcoming
ALPHA builds. We can revisit the default setting for HEAD after the
branch is created.
This change eliminates the build metadata (user, hostname, timestamp,
etc.) from the kernel and loader. If the src tree is a git, svn or p4
checkout with changes then the metadata is retained.
The WITHOUT_REPRODUCIBLE_BUILD src.conf(5) knob can be used to revert
to the previous behaviour.
Approved by: re (gjb)
Sponsored by: The FreeBSD Foundation
We want to build the 12.0 release artifacts with reproducible builds
mode enabled. Switch it on in HEAD now to enable testing with upcoming
ALPHA builds. We can revisit the default setting for HEAD after the
branch is created.
This change eliminates the build metadata (user, hostname, timestamp,
etc.) from the kernel and loader. If the src tree is a git, svn or p4
checkout with changes then the metadata is retained.
The WITHOUT_REPRODUCIBLE_BUILD src.conf(5) knob can be used to revert
to the previous behaviour.
Approved by: re (gjb)
Sponsored by: The FreeBSD Foundation
Both drivers use this interface so add a dependancy on it.
Since awg uses aw_sid for generating the MAC address, make it
depend on both aw_sid and nmvem so when only removing nvmem from
kernel config it will not include this driver.
Reported by: sbruno
Approved by: re (gjb)
It completely unnecessarily iterates over all filesystems and happens
to be executed a lot e.g. by synth.
Reviewed by: kib
Approved by: re (gjb)
Differential Revision: https://reviews.freebsd.org/D17143
The Xen page-table walker used to resolve the virtual addresses in the
hypercalls will refuse to access user-space pages when SMAP is enabled
unless the AC flag in EFLAGS is set (just like normal hardware with
SMAP support would do).
Since privcmd allows forwarding hypercalls (and buffers) from
user-space into Xen make sure SMAP is temporary disabled for the
duration of the hypercall from user-space.
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
Register interrupts using the PIC pic_register_sources method instead
of doing it in apic_setup_io. This is now required, since the internal
interrupt structures are not yet setup when calling apic_setup_io.
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
Instead of panicking. Legacy PVH mode doesn't provide a lapic, and
since native_lapic_intrcnt is called unconditionally this would cause
the assert to trigger. Change the assert into a continue in order to
take into account the possibility of systems without a lapic.
Reviewed by: jhb
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
Differential revision: https://reviews.freebsd.org/D17015
The recommended way to obtain the vcpu id is using the cpuid
instruction with a specific leaf value. This leaf value must be
obtained at runtime, and it's done when populating the hypercall page.
Legacy PVH however will get the hypercall page populated by the
hypervisor itself before booting, so the cpuid leaf was not actually
set, thus preventing setting the vcpu id value from cpuid.
Fix this by making sure the cpuid leaf has been probed before
attempting to set the vcpu id.
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
That's the only mode in FreeBSD that requires the usage of PIRQs, so
there's no need to attach the PIRQ PIC when running in other modes.
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
When adding support for the new PVH mode the kenv handling was
switched to use a boot time allocated scratch space, however the
legacy PVH early boot code was not modified to allocate such space.
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
The vcpu_id for legacy PVH mode can be set from the output of cpuid,
so there's no need to have a special function to set it.
Also note that xenpv_set_ids should have been executed only for PV
guests, but was executed for all guests types and vcpu_id was later
fixed up for HVM guests.
Reported by: cperciva
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
So that it's done when the vcpu_id has been set. For the BSP the
vcpu_id is set at SUB_INTR, while for the APs it's done in
init_secondary_tail that's called at SUB_SMP order FIRST.
Reported and tested by: cperciva
Approved by: re (gjb)
Sponsored by: Citrix Systems R&D
Differential revision: https://reviews.freebsd.org/D17013
