a little:
- Define _UC_MD_BIT* constants for the available machine-dependent bits,
and use those constants to define the machine-dependent bits as well
as the machine-independent bits that have machine-dependent values.
- Explicitly generate an error if _UC_TLSBASE, _UC_SETSTACK, or
_UC_CLRSTACK are not defined by <machine/mcontext.h>.
documented cpuid instruction and eax register.
This approach is adapted from linux via-cputemp.c, no official documentation is
currently available. However, msr value seems to work on all tested CPUs while
documented cpuid instruction typically reports 0, even for my C7-D CPU.
msr value seems to have temperature in Celsius in lower 24-bits without fraction
(thus "msr & 0xffffff;" is used).
Tested on my personal systems based on CPUs below (i386 and amd64):
C7-D 1.6GHz (i386 only), Nano X2 L4350E, Nano X2 U4300, U2300 Nano, KX-U6580.
Also got one response via email which was based on Nano X2 L4050 (VE-900).
Nano reports independent values for each core.
KX-U6580 seems to show the same value for all cores but more testing is needed.
Since it works on amd64 capable CPUs, adding driver to GENERIC kernel config.
Also moving viac7temp man page to x86 instead of i386 (with updates).
In theory the change should add support for all VIA Nano CPUs and Zhaoxin CPUs
at least up to KX-6000(G) series.
In the future I may need to introduce amd64 kernel module as well.
Plan to pullup to at least netbsd-10.
Patch mainly reviewed by riastradh.
Fixes the build without MPBIOS or ACPI. Modified patch from Paolo Pisati in
current-users@.
While here:
Remove obsolete <arch/x86/pci/msipic.h> include with its guard.
Add comments for multiple endifs for better readability.
Let's just see how this works out in practice. Might need to reduce
the overhead of each GHES on machines with thousands of them, but
we'll see.
PR kern/58046
For now it is wired up only in x86 ALL kernels, and built as a module
for x86 and Arm. Once it gets a little more testing on machines with
APEI, I would like to flip it on by default.
PR kern/58046
file flags, only system ones. Restrict those to the superuser. Before
the behavior was controlled by EXT2FS_SYSTEM_FLAGS. Make that behavior the
default.
- create bootinfo information only once.
- add fake biosgeom entries so that the kernel can distinguish between
hard drives (with geom) and CD-ROM (without).
It should be lost during merge from upstream.
We may introduce a similar hack again, if it is *really* required;
inflate_fast() may be dropped by using slow path unconditionally.
DOS command line arguments are provided as struct psp at 0x0000;
see doscommain.c.
Recent versions of gcc and clang are clever enough to optimize code
block involving NULL dereference into ud2 insn.
Sprinkle -fno-delete-null-pointer-checks to doscommain.c to
prevent this behavior.
Note that dosboot.com for netbsd-9 and later was broken due to
this ``over optimization''. gcc 5.5.0 and clang 4.0.0 in netbsd-8
generate correct codes without this workaround.
XXX
Are there still use cases for dosboot.com? Does anyone want to
boot NetBSD from real-mode DOS in 2023?
Add support in dtrace for SMAP, so that actions like copyinstr() work.
It would be better if dtrace could use the SMAP_* hotpatch macros directly,
but the hotpatching code does not currently operate on kernel modules,
so we'll use some tiny functions in the base kernel for now.
- Only tested on PSE SGMII 1G Ethernet MAC with MaxLinear GPY115.
- I don't know why dmat64 doesn't work. eqos_attach() have a special
code if EQOS_HW_FEATURE_ADDR64_32BIT(sc) is true, but it seems it doesn't
work.
- TODO:
Multiqueue support.
Detach support.
syscall/trap entry, eliminating a test+branch on every syscall/trap.
This wasn't possible in the 3.99.x timeframe when l->l_cred came about
because there wasn't a reliable/timely way to force an ONPROC LWP running on
a remote CPU into the kernel (which is just about the only new thing in
this scheme).
We enforce the documented and paritally implemented behavior when
looking for the kernel in RAID 1 sets without a partition name given.
We search for:
- A GPT partition with bootme attribute set
- A FFS or LFS patititon
- The first partition
these functions read %gs and return an pointer at an offset from this
value (the current cpu, or lwp pointers), and GCC is complaining that
they're accessing a array cpu_info[0] (ie, zero length, no storage.)
several attempts to workaround it have failed, and because of the
asm volatile nature of this, it seems very unlikely a compiler would
take this and do something wrong with it.
It should be Messaging, not Media Device Path. Taken from OpenBSD, for
which this code was originally written:
https://cvsweb.openbsd.org/src/sys/arch/amd64/stand/efiboot/efipxe.c#rev1.6
> Network-based device paths use Messaging and not Media types. Thus
> in reality the depth was always -1 which made the compare function
> a No-Op. Properly check the device path depth value and look for
> the Messaging type instead to find the correct NIC. This check
> never worked before and was uncovered by the last change.
>
> Regression noticed by bluhm@
Unfortunately, some (most?) UEFI implementations do not support
com ports by ``Serial I/O Protocol''.
``PNP0501-0'' and friends are not recognized also.
In this case, if user explicitly requires to switch to serial
console by ``consdev'' command, try to use raw I/O port access.
Ugly, but what FreeBSD does, at least.
Proposed as PR port-amd64/57523
thorpej