unwind_frame() may be instrumented by FBT, leading to recursion into
dtrace_probe(). Manually inline unwind_frame() as we do with stack
unwinding code for other architectures.
Submitted by: Domagoj Stolfa
Reviewed by: manu
MFC after: 1 week
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D15359
According to the Intel SDM (Volme 3, 9.11.7) the BIOS signature MSR
should be zeroed before executing cpuid (although in practice it does
not seem to matter).
PR: 192487
Submitted by: Dan Lukes
Reported by: Henrique de Moraes Holschuh
MFC after: 3 days
Don't enable regulator on attach but dealt with them on power_up/power_off
Only set the voltage for the signaling regulator since I don't have boards
that can change the supply voltage.
Enable 1.8v signaling voltage.
Only do a reset of the controller at attach and init it at power_up.
We use to enable some interrupts in reset, only enable the interrupts
we are interested in when doing a request.
While here remove the regulators handling in power_on as it is very wrong
and will be dealt with in another commit.
Tested on: A31, A64
I've been holding back on this because 1.7.0 requires OpenSSL 1.1.0 or
newer for full DANE support. But we can't wait forever, and nothing in
base uses DANE anyway, so here we go.
is executed on the right stack already. No copy from the entry stack
to the kstack must be performed for vm86 bios call code to function.
To access the pcb flags on kernel entry, unconditionally switch to
kernel address space if vm86 mode is detected.
This fixes very early vm86 bios calls, typically done when boot is
performed by boot2 without loader, and kernel falls back to BIOS calls
to get SMAP.
Reported by: bde
Sponsored by: The FreeBSD Foundation
PCB_VM86CALL pcb flag not set should be treated same as return to
userspace.
Most important, the address space must be switched. This fixes
usermode vm86 operations after the 4/4 split.
Sponsored by: The FreeBSD Foundation
exception code is copied to the trampoline.
The correct value is then copied to trampoline automatically, so
tramp_idleptd_reloced can be eliminated.
This will allow to use the same exception entry code to handle traps
from vm86 bios calls on early boot stage, as after the trampoline is
configured.
Sponsored by: The FreeBSD Foundation
Record common_tssd, the descriptor to be written in GDT to point to
the common TSS, before LTR is executed. The LTR instruction sets the
loaded descriptor type to 386 TSS busy, which traps on reloads.
Sponsored by: The FreeBSD Foundation
The profile for send(2)/recv(2) observation has been refactored to
eliminate alloca() in favor of translations available in HEAD.
Sponsored by: Smule, Inc.
Knowing the value of execname during these probes is of some value even
if it is commonly the interrupt kernel thread (intr[12]) -- quite often
it is not, but that depends on the probe.
Sponsored by: Smule, Inc.
A module that wishes to post-process the output needs to know which
arguments were passed in order to re-execute a child in a pipe-chain.
Further, the expansion of ARGV needs to be such that items are escaped
properly.
Sponsored by: Smule, Inc.
If you were to pass an invalid option after `-B num' or `-K num' you
would see that the usage statement would show the value you passed
instead of the actual default.
Moving the default values to separate variables that are unaffected
by the options-parsing allows the usage statement to correctly show
the hard-coded default values if no flags are used.
Sponsored by: Smule, Inc.
A return statement should have been an exit in list_profiles().
If the user passed `-Q' to list profiles and asked for one-line
per profile (`-1'), list_profiles() would not exit as should.
Sponsored by: Smule, Inc.
