Starting with rev 5 (which is inexplicably indicated by a version number
of '3' in the Peripheral ID register), the pl011 doubled the size of the
rx and tx fifos, to 32 bytes, so read the ID register and set the size
variables in the softc accordingly.
An interesting wrinkle in this otherwise-simple concept is that the
bcm2835 SoC, used in Raspberry Pi systems among others, has the rev 5
pl011 hardware, but somehow also has the older 16-byte fifos. We check
the FDT data to see if the hardware is part of a bcm283x system and use
the smaller size if so.
Thanks to jchandra@ for pointing out that newer hardware has bigger fifos.
illumos/illumos-gate@6de76ce2a96de76ce2a9https://www.illumos.org/issues/7867
It seems that in the case where arc_hdr_free_pdata() sees HDR_L2_WRITING() we
would fail to update the ARC space statistics.
In the normal case those statistics are updated in arc_free_data_buf(). But in
the arc_hdr_free_on_write() path we don't do that.
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Author: Andriy Gapon <avg@FreeBSD.org>
MFC after: 10 days
illumos/illumos-gate@c5bde7273ec5bde7273ehttps://www.illumos.org/issues/7843
get_clones_stat() could be very slow if a snapshot has many (thousands) clones.
Clone names are added to an nvlist that's created with NV_UNIQUE_NAME.
So, each time a new name is appended to the list, the whole list is searched
linearly to see if that name is not already in the list. That results in the
quadratic complexity.
That should be easy to fix as we know in advance that we should not get any
duplicate names, so we can drop NV_UNIQUE_NAME when creating the list.
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Author: Andriy Gapon <avg@FreeBSD.org>
MFC after: 1 week
Sponsored by: ClusterHQ
Report UNMAP granularity as stripesize/-offset if we have no other values
to report there.
Add new quirk DA_Q_STRICT_UNMAP for cases when target is too critical to
misaligned UNMAP request, reporting errors instead of being suboptimal.
Setting this quirk makes da periph to forcefully align all UNMAP requests
to avoid those errors by the cost of some odd ranges not being UNMAP'ed.
This makes UNMAP usable within VMware 6.x VMs, just now 100% efficient.
MFC after: 2 weeks
Put large functions into linux_slab.c instead of declaring them static
inline.
Add support for more memory allocation wrappers like kmalloc_array()
and __vmalloc().
Make sure either the M_WAITOK or the M_NOWAIT flag is set and mask
away unused memory allocation flags before calling FreeBSD's malloc()
routine.
Move kmalloc_node() definition to slab.h where it belongs.
Implement support for the SLAB_DESTROY_BY_RCU feature when creating a
kmem_cache which basically means kmem_cache memory is freed using
call_rcu().
MFC after: 1 week
Sponsored by: Mellanox Technologies
r314828(loader.efi: fix an off-by-one bug in efi_verify_staging_size())
doesn't really fix the bug and this patch adds the missing part.
It's a shame that I didn't make everything correct at the very beginning...
MFC after: 2 weeks
Sponsored by: Microsoft
from the .depend files after the build:
cp -r ../vendor/edk2/MdePkg/Include sys/contrib/edk2
cd lib/libefivar
make
pushd `make -V .OBJDIR`
cat .depend*.o | grep sys/contrib | cut -d' ' -f 3 |
sort -u | sed -e 's=/full/path/sys/contrib/edk2/==' > /tmp/xxx
popd
cd ../../sys/contrib/edk2
rm -rf Include
for i in `cat /tmp/xxx`; do
svn cp svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/$i $i
done
svn cp svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/MdePkg.dec .
The original EDK2 repo is ~265MB, the MdePkg is ~23MB, all
MdePkg/Includes is ~7MB and this minimal set is ~1.3MB.
Sponsored by: Netflix
Some drives sometimes have errors for things like setting the number
of queue entries in the submission queue. The error paths taken for
these drives ensure a panic dereferencing uninialized data.
Sponsored by: Netflix
as kernel drivers and their dependency onto mmc(4); this allows for
incrementing the mmc(4) module version but also for entire omission
of these bridge declarations for mmccam(4) in a single place, i. e.
in dev/mmc/bridge.h.
===
From Nathan Whitehorn:
Open Firmware runs in virtual mode on the Powermac G5. This runs inside the
kernel page table, which preserves all address translations made by OF before
the kernel starts; as a result, the kernel address space is a strict superset of
OF's.
Where this explodes is if OF uses an unmapped SLB entry. The SLB fault handler
runs in real mode and refers to the PCPU pointer in SPRG0, which blows up the
kernel. Having a value of SPRG0 that works for the kernel is less fatal than
preserving OF's value in this case.
===
The result of this is seemingly random panics from NULL dereferences, or hangs
immediately upon boot. By not restoring SPRG0 for Open Firmware entry the
kernel PCPU pointer is preserved and SLB faults are successful, resulting in a
stable kernel.
PR: 205458
Reported by: several (over bugzilla, lists, IRC)
Reviewed by: andreast
Tested by: many (various forms)
MFC after: 2 weeks
Fix assumptions about name spaces in NVME driver. First, it assumes
cdata.nn is the number of configured devices. However, it is the
number of supported name spaces. Second, it assumes that there will
never be more than 16 name spaces supported, but a certain drive I'm
testing reports 1024. It assumes that name spaces are a tightly packed
namespace, but the standard seems to indicate otherwise. Finally, it
assumes that an error would be generated when quearying an
unconfigured namespace. Instead, it succeeds but the identify data is
all zeros.
Fix these by limiting the number of name spaces we probe to 16. Remove
aborting when we find one in error. When the size of the name space is
zero, ignore it.
This is admittedly a bandaide. The long term fix will be to
participate in the enumeration and name space change protocols
definfed in the NVNe standard.
Sponsored by: Netflix
LinuxKPI. When the type of the argument is constant the temporary
variable cannot be assigned after the barrier. Instead assign the
temporary variable by initialization.
MFC after: 1 week
Sponsored by: Mellanox Technologies
For now it allows to unload CTL kernel module if there are no target-capable
SIMs in CAM. As next step full teardown of CAM targets can be implemented.
related struct definitions out into the MI path.
Invert the native ipc structs to the Linux ipc structs convesion logic.
Since 64-bit variant of ipc structs has more precision convert native ipc
structs to the 64-bit Linux ipc structs and then truncate 64-bit values
into the non 64-bit if needed. Unlike Linux, return EOVERFLOW if the
values do not fit.
Fix SYSV IPC for 64-bit Linuxulator which never sets IPC_64 bit.
MFC after: 1 month
This change tries to fix the most obvious locking problems.
sbp_cam_scan_lun() is never called with the sbp lock held, so the lock
needs to be acquired internally (if it's needed at all).
Without this change a kernel with INVARIANTS panics when a firewire disk
is connected:
panic: mutex sbp not owned at /usr/src/sys/dev/firewire/sbp.c:967
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff80420bbb = db_trace_self_wrapper+0x2b/frame 0xfffffe0504df0930
kdb_backtrace() at 0xffffffff80670359 = kdb_backtrace+0x39/frame 0xfffffe0504df09e0
vpanic() at 0xffffffff8063986c = vpanic+0x14c/frame 0xfffffe0504df0a20
panic() at 0xffffffff806395b3 = panic+0x43/frame 0xfffffe0504df0a80
__mtx_assert() at 0xffffffff8061c40d = __mtx_assert+0xed/frame 0xfffffe0504df0ac0
sbp_cam_scan_lun() at 0xffffffff80474667 = sbp_cam_scan_lun+0x37/frame 0xfffffe0504df0af0
xpt_done_process() at 0xffffffff802aacfa = xpt_done_process+0x2da/frame 0xfffffe0504df0b30
xpt_done_td() at 0xffffffff802ac2e5 = xpt_done_td+0xd5/frame 0xfffffe0504df0b80
fork_exit() at 0xffffffff805ff72f = fork_exit+0xdf/frame 0xfffffe0504df0bf0
fork_trampoline() at 0xffffffff8082483e = fork_trampoline+0xe/frame
0xfffffe0504df0bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
Also, I tried to reduce the scope of the sbp lock to avoid holding it
while doing bus_dma allocations.
The code badly needs some re-engineering. SBP really should implement
a CAM transport, so that it avoids control flow inversion when re-scanning
the bus. Also, the sbp lock seems to be too coarse.
Additionally, the commit includes some changes not related to locking.
- sbp_cam_scan_lun: restore CAM_DEV_QFREEZE before re-queueing the ccb
because xpt_setup_ccb resets ccb_h.flags
- sbp_post_busreset: call xpt_release_simq only if it's actually frozen
- don't place private SIMQ_FREEZED flag (sic, "freezed") into sim->flags,
use sbp->flags for that
- some style fixes and control flow enhancements
Reviewed by: sbruno
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9898
The module uses unnamed structure and union fields and base GCC in
stable/10 doesn't like it.
I think that that is a C11 feature, so it is courteous of more modern
compilers to not complain about it when compiling in C99 mode.
Approved by: davidcs
MFC after: 5 days
This avoids creating own per-CPU threads and also ensures the tasklet
execution happens on the same CPU core invoking the tasklet.
MFC after: 1 week
Sponsored by: Mellanox Technologies
Suppose a traced process is stopped in ptracestop() due to receipt of a
SIGSTOP signal, and is awaiting orders from the tracing process on how
to handle the signal. Before sending any such orders, the tracing
process exits. This should kill the traced process. But suppose a second
thread handles the SIGKILL and proceeds to exit1(), calling
thread_single(). The first thread will now awaken and will have a chance
to check once more if it should go to sleep due to the SIGSTOP. It must
not sleep after P_SINGLE_EXIT has been set; this would prevent the
SIGKILL from taking effect, leaving a stopped orphan behind after the
tracing process dies.
Also add new tests for this condition.
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D9890
interpreter exactly matches the one requested by the activated image.
This change applies r295277, which did the same for note branding, to
the old brand selection, with the same reasoning of fixing compat32
interpreter substitution.
PR: 211837
Reported by: kenji@kens.fm
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
elf_load_section.
The values passed currently as vm_offset_t are phdr.p_offset, which
have the native Elf word size. Since elf_load_section interprets them
as the file offset, use vm object offset type.
Noted and reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
This change makes the workqueue implementation behave more like in
Linux, both functionality wise and structure wise.
All workqueue code has been moved to linux_work.c
Add an atomic based statemachine to the work_struct to ensure proper
operation. Prior to this change struct_work was directly mapped to a
FreeBSD task. When a taskqueue has multiple threads the same task may
end up being executed on more than one worker thread simultaneously.
This might cause problems with code coming from Linux, which expects
serial behaviour, similar to Linux tasklets.
Move all global workqueue function names into the linux_xxx domain to
avoid symbol name clashes in the future.
Implement a few more workqueue related functions and macros.
Create two multithreaded taskqueues for the LinuxKPI during module
load, one for time-consuming callbacks and one for non-time consuming
callbacks.
MFC after: 1 week
Sponsored by: Mellanox Technologies
Currently netfront is setting the flags of inbound packets with the checksum
not present (offloaded) to (CSUM_IP_CHECKED | CSUM_IP_VALID | CSUM_DATA_VALID |
CSUM_PSEUDO_HDR). According to the mbuf(9) man page this is not the correct
combination of flags, it should instead be (CSUM_DATA_VALID |
CSUM_PSEUDO_HDR).
Reviewed by: Wei Liu <wei.liu2@citrix.com>
MFC after: 2 weeks
Sponsored by: Citrix Systems R&D
Differential revision: https://reviews.freebsd.org/D9831
Lock the xenstore request mutex when suspending user-space processes, in order
to prevent any process from holding this lock when going into suspension, or
else the xenstore suspend process is going to deadlock.
Submitted by: Liuyingdong <liuyingdong@huawei.com>
Reviewed by: royger
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D9638
When running on Xen, it's possible that a suspend request to the hypervisor
fails (return from HYPERVISOR_suspend different than 0). This means that the
suspend hasn't succeed, and the resume procedure needs to properly handle this
case.
First of all, when such situation happens there's no need to reset the vector
callback, hypercall page, shared info, event channels or grant table, because
it's state is preserved. Also, the PV drivers don't need to be reset to the
initial state, since the connection with the backed has not been interrupted.
Submitted by: Liuyingdong <liuyingdong@huawei.com>
Reviewed by: royger
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D9635
Also remove the warning message: it may not be unusual to see
the memory range containing 2MB is not of EfiConventionalMemory.
MFC after: 2 weeks2 weeks
Sponsored by: Microsoft
stuck spinning at 100% cpu around sbcut_internal(). Inside
sbflush_internal(), sb_ccc reached to about 4GB and before passing it
to sbcut_internal(), we type-cast it from uint to int making it -ve.
The root cause of sockbuf growing this large is unknown. Correct fix
is also not clear but based on mailing list discussions, adding
KASSERTs to panic instead of looping endlessly.
Reviewed by: glebius
Sponsored by: Limelight Networks
Currently are defined three scopes: global, ifnet, and pcb.
Generic security policies that IKE daemon can add via PF_KEY interface
or an administrator creates with setkey(8) utility have GLOBAL scope.
Such policies can be applied by the kernel to outgoing packets and checked
agains inbound packets after IPsec processing.
Security policies created by if_ipsec(4) interfaces have IFNET scope.
Such policies are applied to packets that are passed through if_ipsec(4)
interface.
And security policies created by application using setsockopt()
IP_IPSEC_POLICY option have PCB scope. Such policies are applied to
packets related to specific socket. Currently there is no way to list
PCB policies via setkey(8) utility.
Modify setkey(8) and libipsec(3) to be able distinguish the scope of
security policies in the `setkey -DP` listing. Add two optional flags:
'-t' to list only policies related to virtual *tunneling* interfaces,
i.e. policies with IFNET scope, and '-g' to list only policies with GLOBAL
scope. By default policies from all scopes are listed.
To implement this PF_KEY's sadb_x_policy structure was modified.
sadb_x_policy_reserved field is used to pass the policy scope from the
kernel to userland. SADB_SPDDUMP message extended to support filtering
by scope: sadb_msg_satype field is used to specify bit mask of requested
scopes.
For IFNET policies the sadb_x_policy_priority field of struct sadb_x_policy
is used to pass if_ipsec's interface if_index to the userland. For GLOBAL
policies sadb_x_policy_priority is used only to manage order of security
policies in the SPDB. For IFNET policies it is not used, so it can be used
to keep if_index.
After this change the output of `setkey -DP` now looks like:
# setkey -DPt
0.0.0.0/0[any] 0.0.0.0/0[any] any
in ipsec
esp/tunnel/87.250.242.144-87.250.242.145/unique:145
spid=7 seq=3 pid=58025 scope=ifnet ifname=ipsec0
refcnt=1
# setkey -DPg
::/0 ::/0 icmp6 135,0
out none
spid=5 seq=1 pid=872 scope=global
refcnt=1
No objection from: #network
Obtained from: Yandex LLC
MFC after: 2 weeks
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D9805
comments, marking unused parameters as such, style(9), whitespace,
etc.
o In the mmc(4) bridges and sdhci(4) (bus) front-ends:
- Remove redundant assignments of the default bus_generic_print_child
device method (I've whipped these out of the tree as part of r227843
once, but they keep coming back ...),
- use DEVMETHOD_END,
- use NULL instead of 0 for pointers.
o Trim/adjust includes.
If the call to pf_state_key_clone() in pf_get_translation() fails (i.e. there's
no more memory for it) it frees skp. This is wrong, because skp is a
pf_state_key **, so we need to free *skp, as is done later in the function.
Getting it wrong means we try to free a stack variable of the calling
pf_test_rule() function, and we panic.
