dma_map_sgtable internally uses the dma_map_sg_attrs helper. The problem is
that dma_map_sg_attrs returns the number of entries mapped, whereas
dma_map_sgtable returns nonzero on failure. This leads to dma_map_sgtable
returning non-zero-but-positive values which tricks other areas of the stack
into thinking nents is a valid pointer.
This checks if nents is valid and returns zero if so, updating the nents field
in sgt. This fixes PRIME render offload with nvidia-drm.
Fixes: 9202c95f47 ("linuxkpi: Add dma_{un,}map_sgtable")
OVMF ships some static ACPI tables. This worked in the past but won't
work in the future when we support devices like tpms. They require a TPM
ACPI table. So, we have to dynamically create ACPI tables depending on
the bhyve configuration.
Bhyve has much more information about the system than OVMF. Therefore,
it's easier for bhyve to build up some ACPI tables. For that reason, it
would be much better to use the ACPI tables provided by bhyve instead of
building some tables by OVMF.
At the moment, OVMF always creates a SPCR table. Maybe someone depends
on it. So, we have to build it by bhyve too before we can patch OVMF to
install the tables provided by bhyve.
Reviewed by: markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D37591
This reverts commit 68c3f03021. There are
some weird crashes when KVMs switch caused by this, so revert this
commit until they are sorted out.
Reported by: cy@
Sponsored by: Netflix
The zlib project has issue https://github.com/madler/zlib/issues/633 to
document its continued use of old K&R-style function definitions.
Suggested by: delphij@
Sponsored by: Netflix
These are declared as extern in a number of files (some with the wrong
return type). Centralize this in modinfo.h and remove a few extra stray
declarations as well that are no longer used. No functional change.
Note: I've not tried to cope with the bi_load() functions which are the
same logical thing. These will be handled separately.
Sponsored by: Netflix
When processing abds, we execute 1 `kfpu_begin()`/`kfpu_end()` pair on
every page in the abd. This is wasteful and slows down checksum
performance versus what the benchmark claimed. We correct this by moving
those calls to the init and fini functions.
Also, we always check the buffer length against 0 before calling the
non-scalar checksum functions. This means that we do not need to execute
the loop condition for the first loop iteration. That allows us to
micro-optimize the checksum calculations by switching to do-while loops.
Note that we do not apply that micro-optimization to the scalar
implementation because there is no check in
`fletcher_4_incremental_native()`/`fletcher_4_incremental_byteswap()`
against 0 sized buffers being passed.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes#14247
I read the following article and noticed a couple of ZFS bugs mentioned:
https://pvs-studio.com/en/blog/posts/cpp/0377/
I decided to search for them in the modern OpenZFS codebase and then
found one that matched the description of the first one:
V593 Consider reviewing the expression of the 'A = B != C' kind. The
expression is calculated as following: 'A = (B != C)'. zfs_vfsops.c 498
The consequence of this is that the error value is replaced with `1`
when there is an error. When there is no error, 0 is correctly passed.
This is a very minor issue that is unlikely to cause any real problems.
The incorrect error code would either be returned to the mount command
on a failure or any of `zfs receive`, `zfs recv`, `zfs rollback` or `zfs
upgrade`.
The second one has already been fixed.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes#14261
When a boot environment has been booted via the bootonce feature,
userboot clears the bootonce value from an nvlist but fails to write the
updated nvlist back to disk.
The failure occurs because bhyveload opens the guest boot disk image
O_RDONLY, fix this by opening it O_RDWR.
Reviewed by: imp, markj, jhb
Differential Revision: https://reviews.freebsd.org/D37274
The NONE parameter has been deprecated for more than 20 years
but was never removed, its useful to simplify the sendmail
management.
This reverts commit 7cadc52638.
Extend peer deleted notifications (which are the only type right now) to
include the reason the peer was deleted. This can be either because
userspace requested it, or because the peer timed out.
Reviewed by: zlei
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D37583
mtflag is used to add pthread mutex locking around operations to make
them thread-safe. Setting the state to _SERVED is not conditional on
locking.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37541
GCC 12's -Wsign-compare complains if the two alternative results of
the ?: operator are differently signed. Cast the small, sub-page
off_t values to size_t to quiet the warning.
Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D37539
firewire.h includes zero length arrays in unions that trigger this
warning.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37538
This avoids leaking a pointer to the on-stack test_nmctx which
triggers a -Wdangling-pointer warning from GCC.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37536
This function intentionally saves a pointer to an on-stack variable in
a global as a dubious way of reading the stack pointer.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37535
Make 'line' static to move it to .bss instead as that pattern is used
elsewhere in pw(8) (e.g. the static buffer in pw_pwcrypt).
Reported by: GCC -Wdangling-pointer
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37534
GCC 12 warns about a dangling pointer to 'objid' in
zfs_bootenv_initial(). However, this appears to be a false positive
as the pointer to 'objid' is only passed to zfs_lookup_dataset() but
not saved anywhere that outlives the lifetime of the
zfs_bootenv_initial() function.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37533
GCC 12 defaults to C++17 which removes (not just deprecates)
std::auto_ptr<>. Trying to use CXXSTD of c++03 doesn't work with
libc++ headers, but c++11 does.
Reviewed by: brooks, imp, emaste
Differential Revision: https://reviews.freebsd.org/D37531
In the rare case that we succeed in probing, but fail to attach, flip
the default to be to disable the
device. hw.bus.disable_failed_devices=false is no required to restore
the old behavior. The old behavior dates form a time when dynamic
control of devices wasn't yet present (devctl didn't exist). Now that
one can retry probe/attach the device with devctl, the default doesn't
make sense: The more desirable behaivor is to have stable device numbers
when one has several instances of the same device in a system (common
for NICs or HBAs).
Reviewed by: jhb (verbal)
Sponsored by: Netflix
Normally, when a device fails to attach, we tear down the newbus state
for that device so that future driver loads can try again (maybe with a
different driver, or maybe with a re-loaded and fixed kld).
Sometimes, however, it is desirable to have the device fail
permanantly. We do this by calling device_disable() on a failed
attached, as well as keeping the device in DS_ATTACHING forever. This
prevents retries on that device. This is enabled via
hw.bus.disable_failed_devices=1 in either a hint via the loader, or at
runtime with a sysctl setting. Setting from 1 -> 0 at runtime will not
affect previously disabled devices, however: they remain disabled.
They can be re-enabled manually with devctl enable, however.
Sponsored by: Netflix
Reviewed by: gallatin, hselasky, jhb
Differential Revision: https://reviews.freebsd.org/D37517
The comment indicated -Wno-deprecated-declarations was used to avoid
warnings about deprecated auto_ptr and various deprecated function
objects from <functional>. libdevdctl (now) does not use auto_ptr,
so don't mention it in the comment.
Sponsored by: The FreeBSD Foundation
Some typedefs are system dependent, so move them into stat_arch.h where
they are used. On amd64, nlinks is a int64_t, while on aarch64 it's an
int (or int32_t).
Sponsored by: Netflix
Have a better include order so this can more easily be shared between
EFI and kboot. Fewer ifdefs and the same (enough) include order as
before.
Sponsored by: Netflix
We call bi_copymodules twice: once with 0 and once with the size of the
arena. We do this to find the size, it turns out. Document this.
Sponsored by: Netflix
