Mitchell Horne [Fri, 28 Oct 2022 21:20:05 +0000 (18:20 -0300)]
ddb: print the actual syscall name
Some architectures will pretty-print a system call trap in the
backtrace. Rather than printing the symbol, use the syscallname()
function to pull the string from the sv_syscallnames array corresponding
to the process. This simplifies the function somewhat.
Mostly, this will result in dropping the "sys" prefix, e.g. "sys_exit"
will now be printed simply as "exit".
Make two minor tweaks to the function signature: use a u_int for the
syscall number since this is a more correct type (see the 'code' member
of struct syscall_args), and make the thread pointer the first argument.
The latter is more natural and conventional.
Suggested by: jrtc27
Reviewed by: jrtc27, markj, jhb
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37200
Mark Johnston [Fri, 28 Oct 2022 20:53:36 +0000 (16:53 -0400)]
release: Add support for creating ZFS-based VM images
The change extends vmimage.subr to handle a new parameter, VMFS, which
should be equal to either "ufs" or "zfs". When it is set to ZFS, we use
makefs to create a bootable pool populated using the same dataset layout
as bsdinstall and "poudriere image" use. The pool can be grown using
the growfs rc.d script, just as in UFS images.
This will make it easy to provide VM and cloud images with ZFS as the
root filesystem. So far I did not do extensive testing of cloud images;
I merely verified that creation of ZFS-based AWS AMIs works and allows
me to create amd64 and arm64 EC2 instances with ZFS as the root
filesystem.
Reviewed by: emaste, gjb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34426
Relative to upstream this commit includes a few other small fixes such
as additional INET and INET6 #ifdef's, #include cleanups, and updates
for recent API changes in main.
Reviewed by: pauamma, gbe, kevans, emaste
Obtained from: git@git.zx2c4.com:wireguard-freebsd @ 3cc22b2
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D36909
Mitchell Horne [Fri, 28 Oct 2022 16:28:08 +0000 (13:28 -0300)]
riscv: improve parsing of riscv,isa property strings
This code was originally written under the assumption that the ISA
string would only contain single-letter extensions. The RISC-V
specification has extended its description of the format quite a bit,
allowing for much longer ISA strings containing multi-letter extension
names.
Newer versions of QEMU (7.1.0) will append to the riscv,isa property
indicating the presence of multi-letter standard extensions such as
Zfencei. This triggers a KASSERT about the expected length of the
string, preventing boot.
Increase the size of the isa array significantly, and teach the code
to parse (skip over) multi-letter extensions, and optional extension
version numbers. We currently ignore them completely, but this will
change in the future as we start supporting supervisor-level extensions.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D36601
Olivier Houchard [Thu, 27 Oct 2022 21:25:59 +0000 (23:25 +0200)]
arm64: Implement cpu_ptrace().
Add a minimal implementation of cpu_ptrace() for arm64. It is only used to
get/set VFP registers for 32bits binaries, as it is apparently what we use
there, instead of the MI PT_GETFPREGS/PT_SETFPREGS.
Warner Losh [Thu, 27 Oct 2022 17:37:54 +0000 (11:37 -0600)]
kboot: Add hostfs
Add hostfs for the Linux environment. We can't use the userboot one
that's kinda similar because the Linux system calls we have in kboot are
not quite POSIX compliant (Linux takes care of providing the POSIX
interface in libc), so we have to cope with a number of quirks in that
area.
Warner Losh [Thu, 27 Oct 2022 17:36:51 +0000 (11:36 -0600)]
stand/kboot: Make FDT fixup per-arch
The fixups needed vary somewhat by architecture, so move the FDT fixup
to be per-arch. Rename the fdt_linux_fixup() routine to be
fdt_arch_fixup() and expect all architecutres to fix things up as
needed.
Warner Losh [Thu, 27 Oct 2022 17:32:18 +0000 (11:32 -0600)]
bhyve: Implement MSR_MISC_FEATURES_ENABLES
Linux reads MISC_FEATURES_ENABLES to manage the CPUID faulting feature
(undocumented in the Intel SDM, but documented in 323850-004 (Intel
Virtualization Technology FlexMigration Application Note). Since bhyve
doesn't emulate this feature, we always return 0. Neither does bhyve
support the MONITOR/MWAIT fault bit also in this MSR (which is
documented in the sdm), so always return 0.
Math Ieu [Thu, 27 Oct 2022 17:01:57 +0000 (12:01 -0500)]
split: reset errno prior to getline()
Something else may have set errno, breaking the post-getline() logic
that tries to detect the getline() error. This was initially noted in
a jail on a system that has HPET, in a jail that does not expose
/dev/hpet0 -- we see an earlier error in libc's vdso bits.
Fixes: 5c053aa3c5e90 ("split: switch to getline() [...]")
Ed Maste [Thu, 20 Oct 2022 13:04:37 +0000 (09:04 -0400)]
Increase MAX_APIC_ID safeguard to 0x800
MAX_APIC_ID must be at least twice MAXCPU. Increase it to 0x800 so that
it is possible to set MAXCPU to 512 or 1024 in a custom kernel config
file.
Note that increasing this limit does not itself cause any allocations
to be larger; it just allows madt_parse_cpu() to process higher APIC
IDs.
APIC IDs may be sparse and so we can waste memory. This is independent
of this change, but becomes more of an issue as the maximum APIC ID
grows. This should be addressed with future work.
Reviewed by: royger
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37067
Andrew Turner [Thu, 27 Oct 2022 16:21:02 +0000 (17:21 +0100)]
Only build if_mvneta.c when FDT is defined
This is only ever used by a FDT specific attachment and calls into
FDT specific functions. Only build it when FDT is in the kernel config.
Sponsored by: The FreeBSD Foundation
Andrew Turner [Tue, 18 Oct 2022 16:37:43 +0000 (17:37 +0100)]
Remove an unneeded cpu_dcache_wb_range from arm64
The cpu_dcache_wb_range function is an expensive function that is
unneeded in ddb. It is used when the cache needs to be written to RAM,
e.g. when working with a non-cache coherent device.
Remove it as cpu_icache_sync_range already has the needed d-cache
handling to ensure any changed memory is visible to the i-cache.
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37037
Ed Maste [Thu, 27 Oct 2022 14:49:51 +0000 (10:49 -0400)]
netlink: use (void) for function definitions with no arguments
For some of these Clang produced a warning that "a function declaration
without a prototype is deprecated in all versions of C". In other cases
the function defintion used () which did not match the header
declaration, which used (void).
arm64: Hyper-V: enablement for ARM64 in Hyper-V (Part 3, final)
This is the last part for ARM64 Hyper-V enablement. This includes
commone files and make file changes to enable the ARM64 FreeBSD
guest on Hyper-V. With this patch, it should be able to build
the ARM64 image and install it on Hyper-V.
Kyle Evans [Thu, 27 Oct 2022 03:46:45 +0000 (22:46 -0500)]
psci: set psci_present as early as possible
psci_attach is way too late to provide the intended semantics for
psci_present. psci calls can be made immediately after psci_init(),
called way earlier at SI_SUB_CPU + SI_ORDER_FIRST, and we need it to
be valid as early as we can possibly call a psci function.
This fixes booting RPi3+4 with the in-review spintable patch;
rpi3-psci-monitor patches the FDT to add a PSCI node, but it doesn't
patch each cpus' enable-method. Because of this, we would stall the
boot while enabling CPU 1 as we saw a valid looking enable-method and
"no" functional PSCI and attempted to use the spintable rather than
simply not starting secondary APs.
Refactor the symlink and mountpoint traversal logic to avoid
repeatedly checking the vnode type; a symlink cannot be a mountpoint
and vice versa. Avoid repeatedly checking cn_flags for NOCROSSMOUNT
and simplify the check which determines whether the vnode is a
mountpoint.
Remove witness directives from crossmp locking VOPs
These are of limited use since the crossmp vnode locking ops have not
actually used a lock since commit a2d35545429117e68fbcbc68e14ad55e84265d69. We in fact require that
these operations are always issued with LK_SHARED. Additionally,
these directives can produce a false positive in certain VV_CROSSLOCK
cases which require upgrading of the covered vnode lock from shared
to exclusive.
While here, replace the runtime check of LK_SHARED with a KASSERT and
expand the check to include LK_NOWAIT, which all callers pass.
Add VV_CROSSLOCK vnode flag to avoid cross-mount lookup LOR
When a lookup operation crosses into a new mountpoint, the mountpoint
must first be busied before the root vnode can be locked. When a
filesystem is unmounted, the vnode covered by the mountpoint must
first be locked, and then the busy count for the mountpoint drained.
Ordinarily, these two operations work fine if executed concurrently,
but with a stacked filesystem the root vnode may in fact use the
same lock as the covered vnode. By design, this will always be
the case for unionfs (with either the upper or lower root vnode
depending on mount options), and can also be the case for nullfs
if the target and mount point are the same (which admittedly is
very unlikely in practice).
In this case, we have LOR. The lookup path holds the mountpoint
busy while waiting on what is effectively the covered vnode lock,
while a concurrent unmount holds the covered vnode lock and waits
for the mountpoint's busy count to drain.
Attempt to resolve this LOR by allowing the stacked filesystem
to specify a new flag, VV_CROSSLOCK, on a covered vnode as necessary.
Upon observing this flag, the vfs_lookup() will leave the covered
vnode lock held while crossing into the mountpoint. Employ this flag
for unionfs with the caveat that it can't be used for '-o below' mounts
until other unionfs locking issues are resolved.
John Baldwin [Wed, 26 Oct 2022 21:22:56 +0000 (14:22 -0700)]
vmm: Fix AP startup with old userspace binaries.
Older binaries that do not request IPI exits to userspace do not
start user threads for other vCPUs until a STARTUP IPI triggers a
VM_EXITCODE_SPINUP_AP exit to userland. This means that those vcpus
are not yet active (in terms of vm_active_cpus) when the INIT and
STARTUP IPIs are delivered to the vCPUs.
The changes in commit 0bda8d3e9f7a changed the INIT and STARTUP IPIs
to reuse the existing vlapic_calcdest() function. This function
silently ignores IPIs sent to inactive vCPUs. As a result, when using
an old bhyve binary, the INIT and STARTUP IPIs sent to wakeup APs were
ignored.
To fix, restructure the compat code for the INIT and STARTUP IPIs to
ignore the results of vlapic_calcdest() and manually parse the APIC ID
and resulting vcpuid. As part of this, make the compat code always
conditonal on the ipi_exit capability being disabled.
pkgbase: Put zfs utilities and lib in their own package
It is useful to have zfs utilities and lib in a separate package as
it allow users to create image that can support ZFS (i.e. not with
WITHOUT_ZFS in src.conf set) without bloating the default image with
all zfs tools (for example for jails).
For most users it's not needed to boot and they are also
available in the FreeBSD-rescue package in case an update
break and FreeBSD-geom package isn't updated correctly.
If the system has been up more longer than a minute, we add 30 seconds to
the uptime so that subsequent calculations will round to the nearest minute
rather than truncate. However, since the introduction of libxo, we output
the raw value after performing the adjustment. Rewrite so that we output
the raw value first, then perform the adjustment and recalculate before
outputting the humanized value.
While there, reduce stack usage and avoid needless allocations.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D37128
Hyper-V: Code refactor to avoid redundancy of MSR values on x86 and arm64
Refactor the code to put split the MSR values for x86 and arm64
Hyper-V. Code not yet built. This is one of several patches for
the arm64 Hyper-V enablement.
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D37103
Jose Luis Duran [Thu, 13 Oct 2022 16:11:31 +0000 (13:11 -0300)]
strfmon(3): Fix # explanation
There's only one value that specifies the number of digits after the
decimal point (oh, sorry, the "radix character") the other specifies the
number before...
While here, add a little more info on the effects of using the #n value.
Jose Luis Duran [Fri, 21 Oct 2022 19:34:09 +0000 (16:34 -0300)]
strfmon: Fix formatting of a second fixed-width value
There is a bug when formatting two consecutive values using fixed-widths
and the values need padding. This was because the value of pad_size
was zeroed only every other time.
Format Before After
[%8n] [%8n] [ $123.45] [ $123.45] [ $123.45] [ $123.45]
Jose Luis Duran [Tue, 18 Oct 2022 02:24:03 +0000 (23:24 -0300)]
strfmon: Fix an edge case when sep_by_space is 2
Fix an edge case by printing the required space when, the currency
symbol succeeds the value, a space separates the sign from the value and
the sign position precedes the quantity and the currency symbol.
> When {p,n,int_p,int_n}_sep_by_space is 2:
> If the currency symbol and sign string are adjacent, a space separates
> them; otherwise, a space separates the sign string from the value.
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