Use an interface compatible with the Linux one so that the user-space
libraries already using the Linux interface can be used without much
modifications.
This allows user-space to make use of the dm_op family of hypercalls,
which are used by device models.
Sponsored by: Citrix Systems R&D
When we already have the vm page in hand, use vm_page_domain() instead
of vm_phys_domain(). The former has a trivial constant-time
implementation whereas the latter iterates over the mem_affinity array.
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D28005
Remove wi(4). pccard is going away, and wi only supports PC Card
devices, though it has a minor amount of glue to also support
PCI cards. However, removing the one without removing the other
is hard, so the whole driver is being removed.
Relnotes: Yes
This change implements hid_if.m methods for HID-over-USB protocol [1].
Also, this change adds USBHID_ENABLED kernel option which changes
device_probe() priority and adds/removes PnP records to prefer usbhid
over ums, ukbd, wmt and other USB HID device drivers and vice-versa.
The module is based on uhid(4) driver. It is disabled by default for
now due to conflicts with existing USB HID drivers.
[1] https://www.usb.org/sites/default/files/hid1_11.pdf
Reviewed by: hselasky
Differential revision: https://reviews.freebsd.org/D27893
This does an import of quirk stubs, debugging macros from USB code and
numerous usage constants used by dependent drivers.
Besides, this change renames some functions to get a better matching
with userland library and NetBSD/OpenBSD HID code. Namely:
- Old hid_report_size() renamed to hid_report_size_max()
- New hid_report_size() calculates size of given report rather than
maximum size of all reports.
- hid_get_data_unsigned() renamed to hid_get_udata()
- hid_put_data_unsigned() renamed to hid_put_udata()
Compat shim functions are provided in usbhid.h to make possible compile
of legacy code unmodified after this change.
Reviewed by: manu, hselasky
Differential revision: https://reviews.freebsd.org/D27887
It will be used by the upcoming HID-over-i2C implementation. Should be
no-op, except hid.ko module dependency is to be added to affected drivers.
Reviewed by: hselasky, manu
Differential revision: https://reviews.freebsd.org/D27867
These handlers could interrupt code which has interrupts disabled,
and if a spurious page fault occurs during exception handler run,
we get clobbered %cr2 in higher level stack.
This is mostly a speculation, but it is based on hints from good sources.
MFC after: 1 week
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27772
The existing values correspond to x86 exception vector numbers, but the
trap numbers used in the kernel do not match these 1-to-1. Prefer the
definitions from x86/trap.h, as they are what actually get passed to
kdb_trap(). This is of little consequence, as gdb_cpu_signal() only
reports the trap reason (signal number) to the gdb client.
This is limited to the subset of trap values for which kdb_trap() is
reachable.
Reviewed by: kib
Discussed with: jhb
MFC after: 1 week
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D27645
This sysctl node can generate very verbose output, so don't trigger it
for sysctl -a or sysctl vm.pmap.
Reviewed by: markj, kib
Differential Revision: https://reviews.freebsd.org/D27504
Similar to the recent patch to arm's gdb stub in r368414, allow GDB to
update the contents of most general purpose registers.
Reviewed by: cem, jhb, markj
MFC after: 2 weeks
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
NetApp PR: 44
Differential Revision: https://reviews.freebsd.org/D27642
When r362031 moved local TLB invalidation after shootdown IPI send, it
moved too much. In particular, PCID-mode clearing of the pm_gen
generation counters must occur before IPIs are send, which is in fact
described by the comment before seq_cst fence in the invalidation
functions.
Fix it by extracting pm_gen clearing into new helper
pmap_invalidate_preipi(), which is executed before a call to
smp_masked_tlb_shootdown().
Rest of the local invalidation callbacks is simplified as result, and
become very similar to the remote shootdown handlers (to be merged in
some future).
Move pin of the thread to pmap_invalidate_preipi(), and do unpin in
smp_masked_tlb_shootdown().
Reported and tested by: mjg (previous version)
Reviewed by: alc, cem (previous version), markj
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D227588
Ability to load-balance traffic over multiple path is a must-have thing for routers.
It may be used by the servers to balance outgoing traffic over multiple default gateways.
The previous implementation, RADIX_MPATH stayed in the shadow for too long.
It was not well maintained, which lead us to a vicious circle - people were using
non-contiguous mask or firewalls to achieve similar goals. As a result, some routing
daemons implementation still don't have multipath support enabled for FreeBSD.
Turning on ROUTE_MPATH by default would fix it. It will allow to reduce networking
feature gap to other operating systems. Linux and OpenBSD enabled similar support
at least 5 years ago.
ROUTE_MPATH does not consume memory unless actually used. It enables around ~1k LOC.
It does not bring any behaviour changes for userland.
Additionally, feature is (temporarily) turned off by the net.route.multipath sysctl
defaulting to 0.
Differential Revision: https://reviews.freebsd.org/D27428
The hme (Happy Meal Ethernet) driver was the onboard NIC in most
supported sparc64 platforms. A few PCI NICs do exist, but we have seen
no evidence of use on non-sparc systems.
Reviewed by: imp, emaste, bcr
Sponsored by: DARPA
In r367395 parts of machine dependent linux_dummy.c were moved to a new
machine independent file sys/compat/linux/linux_dummy.c and the existing
linux_dummy.c was renamed to linux_dummy_machdep.c.
Add linux_dummy_machdep.c to the linux module for i386.
Rename sys/amd64/linux32/linux_dummy.c for consistency.
Add the new linux_dummy.c to the linux module for i386.
Implement vt_vbefb to support Vesa Bios Extensions (VBE) framebuffer with VT.
vt_vbefb is built based on vt_efifb and is assuming similar data for
initialization, use MODINFOMD_VBE_FB to identify the structure vbe_fb
in kernel metadata.
struct vbe_fb, is populated by boot loader, and is passed to kernel via
metadata payload.
Differential Revision: https://reviews.freebsd.org/D27373
We use 4-level EPT pages, correct the upper bound.
Reviewed by: grehan
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D27402
There is no need for these to be function pointers since they are
never modified post-module load.
Rename AMD/Intel ops to be more consistent.
Submitted by: adam_fenn.io
Reviewed by: markj, grehan
Approved by: grehan (bhyve)
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D27375
where it originally was. The bug introduced in r366267.
o Remove options IOMMU from i386/MINIMAL as we don't have it in
i386/GENERIC.
Reported by: Harry Schmalzbauer <freebsd@omnilan.de>
Reviewed by: kib
Sponsored by: Innovate DSbD
Differential Revision: https://reviews.freebsd.org/D27399
This is a relic from when these instructions weren't supported by the toolchain.
No functional change.
Submitted by: adam_fenn.io
Reviewed by: grehan
Approved by: grehan (bhyve)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D27130
i386 and the rest of supported architectures by defining KERNLOAD in the
vmparam.h and getting rid of magic constant in the linker script, which albeit
documented via comment but isn't programmatically accessible at a compile time.
Use KERNLOAD to eliminate another (matching) magic constant 100 lines down
inside unremarkable TU "copy.c" 3 levels deep in the EFI loader tree.
Reviewed by: markj
Approved by: markj
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D27355
This reduces some code duplication. One behavior change is that
ppt_assign_device() will now only succeed if the device is unowned.
Previously, a device could be assigned to the same VM multiple times,
but each time it was assigned, the device's state was reset.
Reviewed by: markj, grehan
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D27301
Add a new ioctl to disable all MSI-X interrupts for a PCI passthrough
device and invoke it if a write to the MSI-X capability registers
disables MSI-X. This avoids leaving MSI-X interrupts enabled on the
host if a guest device driver has disabled them (e.g. as part of
detaching a guest device driver).
This was found by Chelsio QA when testing that a Linux guest could
switch from MSI-X to MSI interrupts when using the cxgb4vf driver.
While here, explicitly fail requests to enable MSI on a passthrough
device if MSI-X is enabled and vice versa.
Reported by: Sony Arpita Das @ Chelsio
Reviewed by: grehan, markj
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D27212
This driver provides support for Realtek PCI SD card readers. It attaches
mmc(4) bus on card insertion and detaches it on card removal. It has been
tested with RTS5209, RTS5227, RTS5229, RTS522A, RTS525A and RTL8411B. It
should also work with RTS5249, RTL8402 and RTL8411.
PR: 204521
Submitted by: Henri Hennebert (hlh at restart dot be)
Reviewed by: imp, jkim
Differential Revision: https://reviews.freebsd.org/D26435
It can useful for code outside the VM system to look up the NUMA domain
of a page backing a virtual or physical address, specifically when
creating NUMA-aware data structures. We have _vm_phys_domain() for
this, but the leading underscore implies that it's an internal function,
and vm_phys.h has dependencies on a number of other headers.
Rename vm_phys_domain() to vm_page_domain(), and _vm_phys_domain() to
vm_phys_domain(). Make the latter an inline function.
Add _vm_phys.h and define struct vm_phys_seg there so that it's easier
to use in other headers. Include it from vm_page.h so that
vm_page_domain() can be defined there.
Include machine/vmparam.h from _vm_phys.h since it depends directly on
some constants defined there.
Reviewed by: alc
Reviewed by: dougm, kib (earlier versions)
Differential Revision: https://reviews.freebsd.org/D27207
Currently EPT TLB invalidation is done by incrementing a generation
counter and issuing an IPI to all CPUs currently running vCPU threads.
The VMM inner loop caches the most recently observed generation on each
host CPU and invalidates TLB entries before executing the VM if the
cached generation number is not the most recent value.
pmap_invalidate_ept() issues IPIs to force each vCPU to stop executing
guest instructions and reload the generation number. However, it does
not actually wait for vCPUs to exit, potentially creating a window where
guests may continue to reference stale TLB entries.
Fix the problem by bracketing guest execution with an SMR read section
which is entered before loading the invalidation generation. Then,
pmap_invalidate_ept() increments the current write sequence before
loading pm_active and sending IPIs, and polls readers to ensure that all
vCPUs potentially operating with stale TLB entries have exited before
pmap_invalidate_ept() returns.
Also ensure that unsynchronized loads of the generation counter are
wrapped with atomic(9), and stop (inconsistently) updating the
invalidation counter and pm_active bitmask with acquire semantics.
Reviewed by: grehan, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26910
This provides an OpenCrypto driver for Intel QuickAssist devices. The
driver was initially ported from NetBSD and comes with a few
improvements:
- support for GMAC/AES-GCM, AES-CTR and AES-XTS, and support for
SHA/HMAC-authenticated encryption
- support for detaching the driver
- various bug fixes
- DH895X support
Discussed with: jhb
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D26963
The amd64 kernel handles certain types of exceptions on a dedicated
stack. Currently the sizes of these stacks are all hard-coded to
PAGE_SIZE, but for at least NMI handling it can be useful to use larger
stacks. Add constants to intr_machdep.h to make this easier to tweak.
No functional change intended.
Reviewed by: kib
MFC after: 1 week
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D27076
VM_ALLOC_WAITOK and vm_page_unwire_noq(), have eliminated the need for
many of the #includes.
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D27052
It is almost never needed and adds an avoidable branch.
While here do minior clean ups in preparation for larger changes.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D27019
Foundation copyrights, approved by emaste@. It does not include
files which carry other people's copyrights; if you're one
of those people, feel free to make similar change.
Reviewed by: emaste, imp, gbe (manpages)
Differential Revision: https://reviews.freebsd.org/D26980
Linux execve() gets audited as AUE_EXECVE as well, we should also interpret
the return from this correctly for the same reasoning as in r367002.
MFC with: r367002
Improve the code reconstructing en_tw in struct fpreg32 from FXSAVE
results so that all register states are indicated correctly. The
previous code unconditionally mapped non-empty register state to
'normalized value' constant. The new code explicitly distinguishes
the 'zero value' and 'special value' constants as well. This improves
consistency between real FSAVE and translation from FXSAVE, and
ensures that tests using PT_GETFPREGS can rely on a single correct
value independently of the underlying implementation.
PR: 250454
Sponsored by: The FreeBSD Foundation
Obtained from: Moritz Systems
Submitted by: Michał Górny <mgorny@moritz.systems>
Discussed with: emaste
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D26856
Currently, this supports SHA1 and SHA2-{224,256,384,512} both as plain
hashes and in HMAC mode on both amd64 and i386. It uses the SHA
intrinsics when present similar to aesni(4), but uses SSE/AVX
instructions when they are not.
Note that some files from OpenSSL that normally wrap the assembly
routines have been adapted to export methods usable by 'struct
auth_xform' as is used by existing software crypto routines.
Reviewed by: gallatin, jkim, delphij, gnn
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D26821
Rewrite the code that maintains pm_active and invalidates EPTP-tagged
TLB entries in C. Previously this work was done in vmx_enter_guest(),
in assembly, but there is no good reason for that and it makes the TLB
invalidation algorithm for nested page tables harder to review.
No functional change intended. Now, an error from the invept
instruction results in a kernel panic rather than a vmexit. Such errors
should occur only as a result of VMM bugs.
Reviewed by: grehan, kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26830
The former clobbers some registers that shouldn't be touched.
Reviewed by: kib (earlier version)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26406
on some more advanced C features.
This fixes gcc-toolchain build of exception.S.
Reported and tested by: kevans
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
