change virt_size(), virt_dumphdrs() and virt_dumpdata() into its callback
functions.
In virt_foreach() we iterate over all the virtual memory regions that we
want in the minidump. For now, just start with the PBVM (= kernel text
and data plus preloaded modules). The core file this produces can already
be used to work out the libkvm changes that need to be made to support it.
In parallel, we can flesh out the in-kernel bits to dump more of what we
need in a minidump without changing the core file structure.
This chip doesn't require the temperature sensor offset, either v1 or
v2. Doing so causes the initial calibration test to fail.
Tested:
* Intel Centrino 6150
Change the way that reservations keep track of which pages are in use.
Instead of using the page's PG_CACHED and PG_FREE flags, maintain a bit
vector within the reservation. This approach has a couple benefits.
First, it makes breaking reservations much cheaper because there are
fewer cache misses to identify the unused pages. Second, it is a pre-
requisite for supporting two or more reservation sizes.
to SIGTERM when ACPI is enabled. Sending SIGTERM to the hypervisor when an
ACPI-aware OS is running will now trigger a soft-off allowing for a graceful
shutdown of the guest.
- Move constants for ACPI-related registers to acpi.h.
- Implement an SMI_CMD register with commands to enable and disable ACPI.
Currently the only change when ACPI is enabled is to enable the virtual
power button via SIGTERM.
- Implement a fixed-feature power button when ACPI is enabled by asserting
PWRBTN_STS in PM1_EVT when SIGTERM is received.
- Add support for EVFILT_SIGNAL events to mevent.
- Implement support for the ACPI system command interrupt (SCI) and assert
it when needed based on the values in PM1_EVT. Mark the SCI as active-low
and level triggered in the MADT and MP Table.
- Mark PCI interrupts in the MP Table as active-low in addition to level
triggered.
Reviewed by: neel
The handler is now called after the register value is updated in the virtual
APIC page. This will make it easier to handle APIC-write VM-exits with APIC
register virtualization turned on.
This also implies that we need to keep a snapshot of the last value written
to a LVT register. We can no longer rely on the LVT registers in the APIC
page to be "clean" because the guest can write anything to it before the
hypervisor has had a chance to sanitize it.
to NTP access restriction documentation.
The new default restrictions would allow only time queries from a
remote system and will KoD all other requests, but still allow
localhost to do make all requests.
These restrictions are also recommended for all Internet-facing
public NTP servers.
This changeset is intended for an instant MFC to stable/10 and
releng/10.0.
registers.
The handler is now called after the register value is updated in the virtual
APIC page. This will make it easier to handle APIC-write VM-exits with APIC
register virtualization turned on.
We can no longer rely on the value of 'icr_timer' on the APIC page
in the callout handler. With APIC register virtualization the value of
'icr_timer' will be updated by the processor in guest-context before an
APIC-write VM-exit.
Clear the 'delivery status' bit in the ICRLO register in the write handler.
With APIC register virtualization the write happens in guest-context and
we cannot prevent a (buggy) guest from setting this bit.
except the chunks aren't physical memory regions but virtual memory
regions. In both cases, the core file is an ELF file and flags in
the header allow libkvm to distinguish one from the other.
Having ncneg diverge with the actual length of the ncneg tailq causes
NULL dereference.
Add assertion that an entry taken from ncneg queue is indeed negative.
Reported by and discussed with: avg
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
bio_completed, only manage bio_resid, e.g. sa(4).
Reported and tested by: Manfred Antar <null@pozo.com>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
region is claimed by a new entry.
Pass MAP_STACK_GROWS_DOWN and MAP_STACK_GROWS_UP flags to
vm_map_insert() from vm_map_stack(), to really turn off coalescing
code and call to vm_map_simplify_entry() [1].
Reported by: avg, peter, many
Tested by: avg, peter
Noted by: avg [1]
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
preadbuffer() maintained a flag whether there was any non-whitespace
character. This flag is only useful when history is enabled (in that case,
lines containing only whitespace are not added to history). Instead, check
using strspn() when history is enabled.
There is an approximate 2% speedup when running
sh -c '. /etc/rc.subr; . /etc/defaults/rc.conf; source_rc_confs'
with hot cache.
The handler is now called after the register value is updated in the virtual
APIC page. This will make it easier to handle APIC-write VM-exits with APIC
register virtualization turned on.
Additionally, mask all the LVT entries when the vlapic is software-disabled.
This seems to cause issues with jemalloc + {dhclient, sshd}.
Thus, revert this for now until the root cause can be found and
fixed.
This should quieten some runtime problems with the Raspberry Pi.
PR: kern/185046
MFC after: 3 days
This fixes the problem, when gmirror starts again just after stop.
The problem occurs when gmirror's component has geom label with equal size.
E.g. gpt and gptid have the same size as partition, diskid has the same
size as entire disk. When gmirror's geom has been destroyed, glabel
creates its providers and this initiate retaste.
Now "gmirror destroy" command is available. It destroys geom and also
erases gmirror's metadata.
MFC after: 2 weeks
The handlers are now called after the register value is updated in the virtual
APIC page. This will make it easier to handle APIC-write VM-exits with APIC
register virtualization turned on.
Additionally, we need to ensure that the value of these registers is always
correctly reflected in the virtual APIC page, because there is no VM exit
when the guest reads these registers with APIC register virtualization.
INET6 socket when needed to allow pfctl to work on noinet and noinet6
kernels (and try to provide a fallback using AF_LINK as best effort).
Adjust the Makefile to also respect relevant src.conf(5) options
for compile time decisions on INET and INET6 support.
Reviewed by: glebius (no objections)
MFC after: 1 week
that we don't have a good way (yet) to iterate over the mapped pages by
virtual address and simply try each page within the range. Given that we
call pmap_remove() over the entire 2^63 bytes of address space, it takes
a while for pmap_remove to have tried all 2^50 pages.
By using pmap_remove_pages() we use the PV list to find all mappings.
Change derived from a patch by: alc
argument, cast the incoming 0 argument to void *, to silence a warning
from clang 3.4 ("expression which evaluates to zero treated as a null
pointer constant of type 'void *' [-Wnon-literal-null-conversion]").
MFC after: 3 days
