freebsd-current. These CPU speed control techniques are usually unhelpful
at best. For now, continue building the relevant code into GENERIC so that
it can trivially be re-enabled at runtime if anyone wants it.
MFC after: 1 month
This is derived from the mps(4) driver, but it supports only the 12Gb
IT and IR hardware including the SAS 3004, SAS 3008 and SAS 3108.
Some notes about this driver:
o The 12Gb hardware can do "FastPath" I/O, and that capability is included in
this driver.
o WarpDrive functionality has been removed, since it isn't supported in
the 12Gb driver interface.
o The Scatter/Gather list handling code is significantly different between
the 6Gb and 12Gb hardware. The 12Gb boards support IEEE Scatter/Gather
lists.
Thanks to LSI for developing and testing this driver for FreeBSD.
share/man/man4/mpr.4:
mpr(4) man page.
sys/dev/mpr/*:
mpr(4) driver files.
sys/modules/Makefile,
sys/modules/mpr/Makefile:
Add a module Makefile for the mpr(4) driver.
sys/conf/files:
Add the mpr(4) driver.
sys/amd64/conf/GENERIC,
sys/i386/conf/GENERIC,
sys/mips/conf/OCTEON1,
sys/sparc64/conf/GENERIC:
Add the mpr(4) driver to all config files that currently
have the mps(4) driver.
sys/ia64/conf/GENERIC:
Add the mps(4) and mpr(4) drivers to the ia64 GENERIC
config file.
sys/i386/conf/XEN:
Exclude the mpr module from building here.
Submitted by: Steve McConnell <Stephen.McConnell@lsi.com>
MFC after: 3 days
Tested by: Chris Reeves <chrisr@spectralogic.com>
Sponsored by: LSI, Spectra Logic
Relnotes: LSI 12Gb SAS driver mpr(4) added
lindev(4) was only used to provide /dev/full which is now a standard feature of
FreeBSD. /dev/full was never linux-specific and provides a generally useful
feature.
Document this in UPDATING and bump __FreeBSD_version. This will be documented
in the PH shortly.
Reported by: jkim
to sleep permanently by executing a HLT with interrupts disabled.
When this condition is detected the guest with be suspended with a reason of
VM_SUSPEND_HALT and the bhyve(8) process will exit.
Tested by executing "halt" inside a RHEL7-beta guest.
Discussed with: grehan@
Reviewed by: jhb@, tychon@
the 'HLT' instruction. This condition was detected by 'vm_handle_hlt()' and
converted into the SPINDOWN_CPU exitcode . The bhyve(8) process would exit
the vcpu thread in response to a SPINDOWN_CPU and when the last vcpu was
spun down it would reset the virtual machine via vm_suspend(VM_SUSPEND_RESET).
This functionality was broken in r263780 in a way that made it impossible
to kill the bhyve(8) process because it would loop forever in
vm_handle_suspend().
Unbreak this by removing the code to spindown vcpus. Thus a 'halt' from
a Linux guest will appear to be hung but this is consistent with the
behavior on bare metal. The guest can be rebooted by using the bhyvectl
options '--force-reset' or '--force-poweroff'.
Reviewed by: grehan@
by adding an argument to the VM_SUSPEND ioctl that specifies how the virtual
machine should be suspended, viz. VM_SUSPEND_RESET or VM_SUSPEND_POWEROFF.
The disposition of VM_SUSPEND is also made available to the exit handler
via the 'u.suspended' member of 'struct vm_exit'.
This capability is exposed via the '--force-reset' and '--force-poweroff'
arguments to /usr/sbin/bhyvectl.
Discussed with: grehan@
checks for special pcid values in invlpg_pcid_handler(). Forst check
for special values, and only then do PCID-specific page invalidation.
Minor fix to the style compliance, declare local variable at the
function start.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
kernel will now boot on both BIOS and EFI systems without modification.
Equivalent functionality in GENERIC requires making vt(9) the default console
driver, which is probably appropriate at this point.
the cpufreq code. Replace its use with smp_started. There's at least
one userland tool that still looks at the kern.smp.active sysctl, so
preserve it but point it to smp_started as well.
Discussed with: peter, jhb
MFC after: 3 days
Obtained from: Netflix
replace the vt_vga driver with vt_efifb.
This is intended to help with snapshot builds only.
There is no intention to MFC this commit.
Sponsored by: The FreeBSD Foundation
Some of the code in xen-locore.S was picked from Cherry G. Mathew
amd64 Xen PV branch, but I've failed to set the proper copyright, so
do it now.
Approved by: gibbs
Status and Control register at port 0x61.
Be more conservative about "catching up" callouts that were supposed
to fire in the past by skipping an interrupt if it was
scheduled too far in the past.
Restore the PIT ACPI DSDT entries and add an entry for NMISC too.
Approved by: neel (co-mentor)
'struct vmxctx'. It is preserved on the host stack across a guest entry
and exit and just restoring the host's '%rsp' is sufficient.
Pointed out by: grehan@
- remove redundant code
- remove erroneous setting of the error return
in vmmdev_ioctl()
- use style(9) initialization
- in vmx_inject_pir(), document the race condition
that the final conditional statement was detecting,
Tested with both gcc and clang builds.
Reviewed by: neel
correct for the pirbase test (since I'd have thought we'd need to do
something even when the offset is 0 and that test looks like a
misguided attempt to not use an uninitialized variable), but it is at
least the same as today.
My PCI RID changes somehow got intermixed with my PCI ARI patch when I
committed it. I may have accidentally applied a patch to a non-clean
working tree. Revert everything while I figure out what went wrong.
Pointy hat to: rstone
is already correctly reset to the FPU user save area, only PCB_KERNFPU
flag might leak from old thread state into the new state.
For creation of the user-mode thread, the change is nop since
corresponding syscall code does not use FPU. On the other hand,
creation of a kernel thread forks from a thread selected arbitrary
from proc0, which might use FPU.
Reported and tested by: Chris Torek <torek@torek.net>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
- When clearing a bit for a cpuid in pmap->pm_save, ensure that the
cpuid is not set in pm_active. The pm_save indicates which CPUs may
have cached translations for given PCID, which implies that a CPU
executing with the given pmap active have the translations
cached. [1]
- In smp_masked_invltlb(), pass pmap to smp_targeted_tlb_shootdown(). [1]
- In invlrng_handler(), check for the special values of pcid (0 and
-1) and do corresponding global or total invalidations before
checking for performing PCID-specific range invalidation with
INVPCID_ADDR. [2]
- In invltlb_pcid_handler(), do not read %cr3 unless needed. [2]
- Do minor style tweaks. [2]
Submitted by: Henrik Gulbrandsen <henrik@gulbra.net> [1]
Other parts sponsored by: The FreeBSD Foundation [2]
Tested by: Henrik Gulbrandsen, pho
MFC after: 1 week
With this change (and loader.efi from the projects/uefi branch) we can now
boot under qemu using the OVMF UEFI firmware image with the limitation
that a serial console is required.
(This is largely r246337 from the projects/uefi branch.)
Sponsored by: The FreeBSD Foundation
from any context i.e., it is not required to be called from a vcpu thread. The
ioctl simply sets a state variable 'vm->suspend' to '1' and returns.
The vcpus inspect 'vm->suspend' in the run loop and if it is set to '1' the
vcpu breaks out of the loop with a reason of 'VM_EXITCODE_SUSPENDED'. The
suspend handler waits until all 'vm->active_cpus' have transitioned to
'vm->suspended_cpus' before returning to userspace.
Discussed with: grehan
add it in kern.mk, but only if we're using clang. While this
option is supported by both clang and gcc, in the future there
may be changes to clang which change the defaults that require
a tweak to build our kernel such that other tools in our tree
will work. Set a good example by forcing -gdwarf-2 only for
clang builds, and only if the user hasn't specified another
dwarf level already. Update UPDATING to reflect the changed
state of affairs. This also keeps us from having to update
all the ARM kernels to add this, and also keeps us from
in the future having to update all the MIPS kernels and is
one less place the user will have to know to do something
special for clang and one less thing developers will need
to do when moving an architecture to clang.
Reviewed by: ian@
MFC after: 1 week
To reduce the diff struct pcu.cnt field was not renamed, so
PCPU_OP(cnt.field) is still used. pc_cnt and pcpu are also used in
kvm(3) and vmstat(8). The goal was to not affect externally used KPI.
Bump __FreeBSD_version_ in case some out-of-tree module/code relies on the
the global cnt variable.
Exp-run revealed no ports using it directly.
No objection from: arch@
Sponsored by: EMC / Isilon Storage Division
faults.
First, for accesses to direct map region should check for the limit by
which direct map is instantiated.
Second, for accesses to the kernel map, success returned from the
kernacc(9) does not guarantee that consequent attempt to read or write
to the checked address succeed, since other thread might invalidate
the address meantime. Add a new thread private flag TDP_DEVMEMIO,
which instructs vm_fault() to return error when fault happens on the
MAP_ENTRY_NOFAULT entry, instead of panicing. The trap handler would
then see a page fault from access, and recover in normal way, making
/dev/mem access safer.
Remove GIANT_REQUIRED from the amd64 memrw(), since it is not needed
and having Giant locked does not solve issues for amd64.
Note that at least the second issue exists on other architectures, and
requires similar patching for md code.
Reported and tested by: clusteradm (gjb, sbruno)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
called with interrupts enabled. Calling fasttrap_pid_probe() with interrupts
disabled can lead to deadlock if fasttrap writes to the process' address
space.
Reviewed by: rpaulo
MFC after: 3 weeks
blocked on it.
This is done by issuing a wakeup after clearing the 'vcpuid' from 'active_cpus'.
Also, use CPU_CLR_ATOMIC() to guarantee visibility of the updated 'active_cpus'
across all host cpus.
helps when bits and pieces of GENERIC from i386 or amd64 are cut and
pasted into other architecture's config files (which in the case of
ARM had gotten rather akimbo).
