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As the register definition clearly states, this is a 16-bit register,
yet we did all accesses as 32-bit. The writes in particular would have
the potential to clear the TIMER register (depending on how the bus/card
actually handles the too long writes).
This commit also introduces a separate define A_GPIO which aliases
A_IOCFG, which better reflects the distinct usage on E-MU cards.
This is done in the same commit to keep the churn down, as we're
touching all involved lines anyway.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005539-2-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Assert the validity of the registers and values, as them being out of
range would indicate an error in the driver. Consequently, don't bother
returning error codes; they were ignored everywhere anyway.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005539-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Detach it better from the main PCM driver, which it really doesn't have
much in common with.
In particular, this moves the interrupt handler implementation into
p16v.c, and makes it access the substream runtime status more directly,
so it doesn't need to abuse structs snd_emu10k1_pcm and
snd_emu10k1_voice any more.
We don't need private pcm runtime data at all, as the only thing it was
used for (except the back-link to the substream) was the `running` flag.
So store that directly in runtime->private_data.
This somewhat radical strip-down shows that this driver contains some
complexity that was never actually utilized. I suppose the right way to
fully utilize the hardware in a simple way would be introducing more
substreams. This wouldn't require any of the removed code.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005452-7-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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It was written, but never read from. Its value is available via the epcm
field.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005452-5-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The use of the variable was removed in commit 2b637da5a1b ("clean up
card features"). That commit also broke user space (the ioctl
structure), at which point the defines became meaningless, so I don't
think purging them is a problem.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005452-3-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2023-04-20
1) Dragos Improves RX page pool, and provides some fixes to his previous
series:
1.1) Fix releasing page_pool for striding RQ and legacy RQ nonlinear case
1.2) Hook NAPIs to page pools to gain more performance.
2) From Roi, Some cleanups to TC and eswitch modules.
3) Maher migrates vnic diagnostic counters reporting from debugfs to a
dedicated devlink health reporter
Maher Says:
===========
net/mlx5: Expose vnic diagnostic counters using devlink
Currently, vnic diagnostic counters are exposed through the following
debugfs:
$ ls /sys/kernel/debug/mlx5/0000:08:00.0/esw/vf_0/vnic_diag/
cq_overrun
quota_exceeded_command
total_q_under_processor_handle
invalid_command
send_queue_priority_update_flow
nic_receive_steering_discard
The current design does not allow the hypervisor to view the diagnostic
counters of its VFs, in case the VFs get bound to a VM. In other words,
the counters are not exposed for representor interfaces.
Furthermore, the debugfs design is inconvenient future-wise, in case more
counters need to be reported by the driver in the future.
As these counters pertain to vNIC health, it is more appropriate to
utilize the devlink health reporter to expose them.
Thus, this patchest includes the following changes:
* Drop the current vnic diagnostic counters debugfs interface.
* Add a vnic devlink health reporter for PFs/VFs core devices, which
when diagnosed will dump vnic diagnostic counter values that are
queried from FW.
* Add a vnic devlink health reporter for the representor interface, which
serves the same purpose listed in the previous point, in addition to
allowing the hypervisor to view its VFs diagnostic counters, even when
the VFs are bounded to external VMs.
Example of devlink health reporter usage is:
$devlink health diagnose pci/0000:08:00.0 reporter vnic
vNIC env counters:
total_error_queues: 0 send_queue_priority_update_flow: 0
comp_eq_overrun: 0 async_eq_overrun: 0 cq_overrun: 0
invalid_command: 0 quota_exceeded_command: 0
nic_receive_steering_discard: 0
===========
4) SW steering fixes and improvements
Yevgeny Kliteynik Says:
=======================
These short patch series are just small fixes / improvements for
SW steering:
- Patch 1: Fix dumping of legacy modify_hdr in debug dump to
align to what is expected by parser
- Patch 2: Have separate threshold for ICM sync per ICM type
- Patch 3: Add more info to the steering debug dump - Linux
version and device name
- Patch 4: Keep track of number of buddies that are currently
in use per domain per buddy type
=======================
* tag 'mlx5-updates-2023-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5: Update op_mode to op_mod for port selection
net/mlx5: E-Switch, Remove unused mlx5_esw_offloads_vport_metadata_set()
net/mlx5: E-Switch, Remove redundant dev arg from mlx5_esw_vport_alloc()
net/mlx5: Include linux/pci.h for pci_msix_can_alloc_dyn()
net/mlx5e: RX, Hook NAPIs to page pools
net/mlx5e: RX, Fix XDP_TX page release for legacy rq nonlinear case
net/mlx5e: RX, Fix releasing page_pool pages twice for striding RQ
net/mlx5e: Add vnic devlink health reporter to representors
net/mlx5: Add vnic devlink health reporter to PFs/VFs
Revert "net/mlx5: Expose vnic diagnostic counters for eswitch managed vports"
Revert "net/mlx5: Expose steering dropped packets counter"
net/mlx5: DR, Add memory statistics for domain object
net/mlx5: DR, Add more info in domain dbg dump
net/mlx5: DR, Calculate sync threshold of each pool according to its type
net/mlx5: DR, Fix dumping of legacy modify_hdr in debug dump
====================
Link: https://lore.kernel.org/r/20230421013850.349646-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2023-04-21
We've added 71 non-merge commits during the last 8 day(s) which contain
a total of 116 files changed, 13397 insertions(+), 8896 deletions(-).
The main changes are:
1) Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward,
from Florian Westphal.
2) Fix race between btf_put and btf_idr walk which caused a deadlock,
from Alexei Starovoitov.
3) Second big batch to migrate test_verifier unit tests into test_progs
for ease of readability and debugging, from Eduard Zingerman.
4) Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree, from Dave Marchevsky.
5) Migrate bpf_for(), bpf_for_each() and bpf_repeat() macros from BPF
selftests into libbpf-provided bpf_helpers.h header and improve
kfunc handling, from Andrii Nakryiko.
6) Support 64-bit pointers to kfuncs needed for archs like s390x,
from Ilya Leoshkevich.
7) Support BPF progs under getsockopt with a NULL optval,
from Stanislav Fomichev.
8) Improve verifier u32 scalar equality checking in order to enable
LLVM transformations which earlier had to be disabled specifically
for BPF backend, from Yonghong Song.
9) Extend bpftool's struct_ops object loading to support links,
from Kui-Feng Lee.
10) Add xsk selftest follow-up fixes for hugepage allocated umem,
from Magnus Karlsson.
11) Support BPF redirects from tc BPF to ifb devices,
from Daniel Borkmann.
12) Add BPF support for integer type when accessing variable length
arrays, from Feng Zhou.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (71 commits)
selftests/bpf: verifier/value_ptr_arith converted to inline assembly
selftests/bpf: verifier/value_illegal_alu converted to inline assembly
selftests/bpf: verifier/unpriv converted to inline assembly
selftests/bpf: verifier/subreg converted to inline assembly
selftests/bpf: verifier/spin_lock converted to inline assembly
selftests/bpf: verifier/sock converted to inline assembly
selftests/bpf: verifier/search_pruning converted to inline assembly
selftests/bpf: verifier/runtime_jit converted to inline assembly
selftests/bpf: verifier/regalloc converted to inline assembly
selftests/bpf: verifier/ref_tracking converted to inline assembly
selftests/bpf: verifier/map_ptr_mixing converted to inline assembly
selftests/bpf: verifier/map_in_map converted to inline assembly
selftests/bpf: verifier/lwt converted to inline assembly
selftests/bpf: verifier/loops1 converted to inline assembly
selftests/bpf: verifier/jeq_infer_not_null converted to inline assembly
selftests/bpf: verifier/direct_packet_access converted to inline assembly
selftests/bpf: verifier/d_path converted to inline assembly
selftests/bpf: verifier/ctx converted to inline assembly
selftests/bpf: verifier/btf_ctx_access converted to inline assembly
selftests/bpf: verifier/bpf_get_stack converted to inline assembly
...
====================
Link: https://lore.kernel.org/r/20230421211035.9111-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch allows users to add devices to an existing netdev chain.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Correct some spelling errors flagged by codespell and found by inspection.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Remove EnterFunction and LeaveFunction.
These debugging macros seem well past their use-by date. And seem to
have little value these days. Removing them allows some trivial cleanup
of some exit paths for some functions. These are also included in this
patch. There is likely scope for further cleanup of both debugging and
unwind paths. But let's leave that for another day.
Only intended to change debug output, and only when CONFIG_IP_VS_DEBUG
is enabled. Compile tested only.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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In ip_vs_sync_conn_v0() copy is made to struct ip_vs_sync_conn_options.
That structure looks like this:
struct ip_vs_sync_conn_options {
struct ip_vs_seq in_seq;
struct ip_vs_seq out_seq;
};
The source of the copy is the in_seq field of struct ip_vs_conn. Whose
type is struct ip_vs_seq. Thus we can see that the source - is not as
wide as the amount of data copied, which is the width of struct
ip_vs_sync_conn_option.
The copy is safe because the next field in is another struct ip_vs_seq.
Make use of struct_group() to annotate this.
Flagged by gcc-13 as:
In file included from ./include/linux/string.h:254,
from ./include/linux/bitmap.h:11,
from ./include/linux/cpumask.h:12,
from ./arch/x86/include/asm/paravirt.h:17,
from ./arch/x86/include/asm/cpuid.h:62,
from ./arch/x86/include/asm/processor.h:19,
from ./arch/x86/include/asm/timex.h:5,
from ./include/linux/timex.h:67,
from ./include/linux/time32.h:13,
from ./include/linux/time.h:60,
from ./include/linux/stat.h:19,
from ./include/linux/module.h:13,
from net/netfilter/ipvs/ip_vs_sync.c:38:
In function 'fortify_memcpy_chk',
inlined from 'ip_vs_sync_conn_v0' at net/netfilter/ipvs/ip_vs_sync.c:606:3:
./include/linux/fortify-string.h:529:25: error: call to '__read_overflow2_field' declared with attribute warning: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Werror=attribute-warning]
529 | __read_overflow2_field(q_size_field, size);
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Compile tested only.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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pass it as argument instead. This reduces size of traceinfo to
16 bytes. Total stack usage:
nf_tables_core.c:252 nft_do_chain 304 static
While its possible to also pass basechain as argument, doing so
increases nft_do_chaininfo function size.
Unlike pktinfo/verdict/rule the basechain info isn't used in
the expression evaluation path. gcc places it on the stack, which
results in extra push/pop when it gets passed to the trace helpers
as argument rather than as part of the traceinfo structure.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Just pass it as argument to nft_trace_notify. Stack is reduced by 8 bytes:
nf_tables_core.c:256 nft_do_chain 312 static
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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pass it as argument. No change in object size.
stack usage decreases by 8 byte:
nf_tables_core.c:254 nft_do_chain 320 static
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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We only need to validate tables that saw changes in the current
transaction.
The existing code revalidates all tables, but this isn't needed as
cross-table jumps are not allowed (chains have table scope).
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The ->cleanup callback needs to be removed, this doesn't work anymore as
the transaction mutex is already released in the ->abort function.
Just do it after a successful validation pass, this either happens
from commit or abort phases where transaction mutex is held.
Fixes: f102d66b335a ("netfilter: nf_tables: use dedicated mutex to guard transactions")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Now that the rule trailer/end marker and the rcu head reside in the
same structure, we no longer need to save/restore the chain pointer
when performing/returning from a jump.
We can simply let the trace infra walk the evaluated rule until it
hits the end marker and then fetch the chain pointer from there.
When the rule is NULL (policy tracing), then chain and basechain
pointers were already identical, so just use the basechain.
This cuts size of jumpstack in half, from 256 to 128 bytes in 64bit,
scripts/stackusage says:
nf_tables_core.c:251 nft_do_chain 328 static
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add rdma write capability that is propagated from the device to rdma-core.
Enable MR creation with remote write permissions according to this device
capability.
Link: https://lore.kernel.org/r/20230404154313.35194-1-ynachum@amazon.com
Reviewed-by: Firas Jahjah <firasj@amazon.com>
Reviewed-by: Michael Margolin <mrgolin@amazon.com>
Signed-off-by: Yonatan Nachum <ynachum@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Some architectures can have their hugetlb pages down at the lowest PTE
level: their huge_pte_alloc() using pte_alloc_map(), but without any
following pte_unmap(). Since none of these arches uses CONFIG_HIGHPTE,
this is not seen as a problem at present; but would become a problem if
forthcoming changes were to add an rcu_read_lock() into pte_offset_map(),
with the rcu_read_unlock() expected in pte_unmap().
Similarly in their huge_pte_offset(): pte_offset_kernel() is good enough
for that, but it's probably less confusing if we define pte_offset_huge()
along with pte_alloc_huge(). Only define them without CONFIG_HIGHPTE: so
there would be a build error to signal if ever more work is needed.
For ease of development, define these now for 6.4-rc1, ahead of any use:
then architectures can integrate patches using them, independent from mm.
Link: https://lkml.kernel.org/r/ae9e7d98-8a3a-cfd9-4762-bcddffdf96cf@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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This adds the general_profit KSM sysfs knob and the process profit metric
knobs to ksm_stat.
1) expose general_profit metric
The documentation mentions a general profit metric, however this
metric is not calculated. In addition the formula depends on the size
of internal structures, which makes it more difficult for an
administrator to make the calculation. Adding the metric for a better
user experience.
2) document general_profit sysfs knob
3) calculate ksm process profit metric
The ksm documentation mentions the process profit metric and how to
calculate it. This adds the calculation of the metric.
4) mm: expose ksm process profit metric in ksm_stat
This exposes the ksm process profit metric in /proc/<pid>/ksm_stat.
The documentation mentions the formula for the ksm process profit
metric, however it does not calculate it. In addition the formula
depends on the size of internal structures. So it makes sense to
expose it.
5) document new procfs ksm knobs
Link: https://lkml.kernel.org/r/20230418051342.1919757-3-shr@devkernel.io
Signed-off-by: Stefan Roesch <shr@devkernel.io>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "mm: process/cgroup ksm support", v9.
So far KSM can only be enabled by calling madvise for memory regions. To
be able to use KSM for more workloads, KSM needs to have the ability to be
enabled / disabled at the process / cgroup level.
Use case 1:
The madvise call is not available in the programming language. An
example for this are programs with forked workloads using a garbage
collected language without pointers. In such a language madvise cannot
be made available.
In addition the addresses of objects get moved around as they are
garbage collected. KSM sharing needs to be enabled "from the outside"
for these type of workloads.
Use case 2:
The same interpreter can also be used for workloads where KSM brings
no benefit or even has overhead. We'd like to be able to enable KSM on
a workload by workload basis.
Use case 3:
With the madvise call sharing opportunities are only enabled for the
current process: it is a workload-local decision. A considerable number
of sharing opportunities may exist across multiple workloads or jobs (if
they are part of the same security domain). Only a higler level entity
like a job scheduler or container can know for certain if its running
one or more instances of a job. That job scheduler however doesn't have
the necessary internal workload knowledge to make targeted madvise
calls.
Security concerns:
In previous discussions security concerns have been brought up. The
problem is that an individual workload does not have the knowledge about
what else is running on a machine. Therefore it has to be very
conservative in what memory areas can be shared or not. However, if the
system is dedicated to running multiple jobs within the same security
domain, its the job scheduler that has the knowledge that sharing can be
safely enabled and is even desirable.
Performance:
Experiments with using UKSM have shown a capacity increase of around 20%.
Here are the metrics from an instagram workload (taken from a machine
with 64GB main memory):
full_scans: 445
general_profit: 20158298048
max_page_sharing: 256
merge_across_nodes: 1
pages_shared: 129547
pages_sharing: 5119146
pages_to_scan: 4000
pages_unshared: 1760924
pages_volatile: 10761341
run: 1
sleep_millisecs: 20
stable_node_chains: 167
stable_node_chains_prune_millisecs: 2000
stable_node_dups: 2751
use_zero_pages: 0
zero_pages_sharing: 0
After the service is running for 30 minutes to an hour, 4 to 5 million
shared pages are common for this workload when using KSM.
Detailed changes:
1. New options for prctl system command
This patch series adds two new options to the prctl system call.
The first one allows to enable KSM at the process level and the second
one to query the setting.
The setting will be inherited by child processes.
With the above setting, KSM can be enabled for the seed process of a cgroup
and all processes in the cgroup will inherit the setting.
2. Changes to KSM processing
When KSM is enabled at the process level, the KSM code will iterate
over all the VMA's and enable KSM for the eligible VMA's.
When forking a process that has KSM enabled, the setting will be
inherited by the new child process.
3. Add general_profit metric
The general_profit metric of KSM is specified in the documentation,
but not calculated. This adds the general profit metric to
/sys/kernel/debug/mm/ksm.
4. Add more metrics to ksm_stat
This adds the process profit metric to /proc/<pid>/ksm_stat.
5. Add more tests to ksm_tests and ksm_functional_tests
This adds an option to specify the merge type to the ksm_tests.
This allows to test madvise and prctl KSM.
It also adds a two new tests to ksm_functional_tests: one to test
the new prctl options and the other one is a fork test to verify that
the KSM process setting is inherited by client processes.
This patch (of 3):
So far KSM can only be enabled by calling madvise for memory regions. To
be able to use KSM for more workloads, KSM needs to have the ability to be
enabled / disabled at the process / cgroup level.
1. New options for prctl system command
This patch series adds two new options to the prctl system call.
The first one allows to enable KSM at the process level and the second
one to query the setting.
The setting will be inherited by child processes.
With the above setting, KSM can be enabled for the seed process of a
cgroup and all processes in the cgroup will inherit the setting.
2. Changes to KSM processing
When KSM is enabled at the process level, the KSM code will iterate
over all the VMA's and enable KSM for the eligible VMA's.
When forking a process that has KSM enabled, the setting will be
inherited by the new child process.
1) Introduce new MMF_VM_MERGE_ANY flag
This introduces the new flag MMF_VM_MERGE_ANY flag. When this flag
is set, kernel samepage merging (ksm) gets enabled for all vma's of a
process.
2) Setting VM_MERGEABLE on VMA creation
When a VMA is created, if the MMF_VM_MERGE_ANY flag is set, the
VM_MERGEABLE flag will be set for this VMA.
3) support disabling of ksm for a process
This adds the ability to disable ksm for a process if ksm has been
enabled for the process with prctl.
4) add new prctl option to get and set ksm for a process
This adds two new options to the prctl system call
- enable ksm for all vmas of a process (if the vmas support it).
- query if ksm has been enabled for a process.
3. Disabling MMF_VM_MERGE_ANY for storage keys in s390
In the s390 architecture when storage keys are used, the
MMF_VM_MERGE_ANY will be disabled.
Link: https://lkml.kernel.org/r/20230418051342.1919757-1-shr@devkernel.io
Link: https://lkml.kernel.org/r/20230418051342.1919757-2-shr@devkernel.io
Signed-off-by: Stefan Roesch <shr@devkernel.io>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Both of them change the arg from page_list to folio_list when convert them
to use a folio, but not the declaration, let's correct it, also move the
reclaim_pages() from swap.h to internal.h as it only used in mm.
Link: https://lkml.kernel.org/r/20230417114807.186786-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviwed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Folio version of create_empty_buffers(). This is required to convert
create_page_buffers() to folio_create_buffers() later in the series.
It removes several calls to compound_head() as it works directly on folio
compared to create_empty_buffers(). Hence, create_empty_buffers() has
been modified to call folio_create_empty_buffers().
Link: https://lkml.kernel.org/r/20230417123618.22094-4-p.raghav@samsung.com
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Folio version of alloc_page_buffers() helper. This is required to convert
create_page_buffers() to folio_create_buffers() later in the series.
alloc_page_buffers() has been modified to call folio_alloc_buffers() which
adds one call to compound_head() but folio_alloc_buffers() removes one
call to compound_head() compared to the existing alloc_page_buffers()
implementation.
Link: https://lkml.kernel.org/r/20230417123618.22094-3-p.raghav@samsung.com
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "convert create_page_buffers to folio_create_buffers".
One of the first kernel panic we hit when we try to increase the block
size > 4k is inside create_page_buffers()[1]. Even though buffer.c
function do not support large folios (folios > PAGE_SIZE) at the moment,
these changes are required when we want to remove that constraint.
This patch (of 4):
The folio version of set_bh_page(). This is required to convert
create_page_buffers() to folio_create_buffers() later in the series.
Link: https://lkml.kernel.org/r/20230417123618.22094-1-p.raghav@samsung.com
Link: https://lkml.kernel.org/r/20230417123618.22094-2-p.raghav@samsung.com
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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This reverts commit 5c62d5aab8752e5ee7bfbe75ed6060db1c787f98.
This broke wake-on-lan for multiple people, and for much too long.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217069
Link: https://lore.kernel.org/all/754225a2-95a9-2c36-1886-7da1a78308c2@loongson.cn/
Link: https://github.com/acpica/acpica/pull/866
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Jianmin Lv <lvjianmin@loongson.cn>
Cc: Huacai Chen <chenhuacai@loongson.cn>
Cc: Bob Moore <robert.moore@intel.com>
Cc: stable@kernel.org # 6.2
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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add glue code so a bpf program can be run using userspace-provided
netfilter state and packet/skb.
Default is to use ipv4:output hook point, but this can be overridden by
userspace. Userspace provided netfilter state is restricted, only hook and
protocol families can be overridden and only to ipv4/ipv6.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230421170300.24115-7-fw@strlen.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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This allows userspace ("nft list hooks") to show which bpf program
is attached to which hook.
Without this, user only knows bpf prog is attached at prio
x, y, z at INPUT and FORWARD, but can't tell which program is where.
v4: kdoc fixups (Simon Horman)
Link: https://lore.kernel.org/bpf/ZEELzpNCnYJuZyod@corigine.com/
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230421170300.24115-4-fw@strlen.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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This adds minimal support for BPF_PROG_TYPE_NETFILTER bpf programs
that will be invoked via the NF_HOOK() points in the ip stack.
Invocation incurs an indirect call. This is not a necessity: Its
possible to add 'DEFINE_BPF_DISPATCHER(nf_progs)' and handle the
program invocation with the same method already done for xdp progs.
This isn't done here to keep the size of this chunk down.
Verifier restricts verdicts to either DROP or ACCEPT.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230421170300.24115-3-fw@strlen.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add bpf_link support skeleton. To keep this reviewable, no bpf program
can be invoked yet, if a program is attached only a c-stub is called and
not the actual bpf program.
Defaults to 'y' if both netfilter and bpf syscall are enabled in kconfig.
Uapi example usage:
union bpf_attr attr = { };
attr.link_create.prog_fd = progfd;
attr.link_create.attach_type = 0; /* unused */
attr.link_create.netfilter.pf = PF_INET;
attr.link_create.netfilter.hooknum = NF_INET_LOCAL_IN;
attr.link_create.netfilter.priority = -128;
err = bpf(BPF_LINK_CREATE, &attr, sizeof(attr));
... this would attach progfd to ipv4:input hook.
Such hook gets removed automatically if the calling program exits.
BPF_NETFILTER program invocation is added in followup change.
NF_HOOK_OP_BPF enum will eventually be read from nfnetlink_hook, it
allows to tell userspace which program is attached at the given hook
when user runs 'nft hook list' command rather than just the priority
and not-very-helpful 'this hook runs a bpf prog but I can't tell which
one'.
Will also be used to disallow registration of two bpf programs with
same priority in a followup patch.
v4: arm32 cmpxchg only supports 32bit operand
s/prio/priority/
v3: restrict prog attachment to ip/ip6 for now, lets lift restrictions if
more use cases pop up (arptables, ebtables, netdev ingress/egress etc).
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230421170300.24115-2-fw@strlen.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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This commit adds missing luminance control registers to enable a more
standard way (VESA) to deal with eDP luminance control.
Cc: Anthony Koo <anthony.koo@amd.com>
Cc: Iswara Negulendran <iswara.nagulendran@amd.com>
Cc: Felipe Clark <felipe.clark@amd.com>
Cc: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230412000943.429031-1-Rodrigo.Siqueira@amd.com
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IOMAP_DIO_NOSYNC earlier was added for use in btrfs. But it seems for
aio dsync writes this is not useful anyway. For aio dsync case, we
we queue the request and return -EIOCBQUEUED. Now, since IOMAP_DIO_NOSYNC
doesn't let iomap_dio_complete() to call generic_write_sync(),
hence we may lose the sync write.
Hence kill this flag as it is not in use by any FS now.
Tested-by: Disha Goel <disgoel@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Add TRACE_IOCB_STRINGS macro which can be used in the trace point patch to
print different flag values with meaningful string output.
Tested-by: Disha Goel <disgoel@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
[djwong: line up strings all prettylike]
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip changes from Marc Zyngier:
- Large RISC-V IPI rework to make way for a new interrupt
architecture
- More Loongarch fixes from Lianmin Lv, fixing issues in the so
called "dual-bridge" systems.
- Workaround for the nvidia T241 chip that gets confused in
3 and 4 socket configurations, leading to the GIC
malfunctionning in some contexts
- Drop support for non-firmware driven GIC configurarations
now that the old ARM11MP Cavium board is gone
- Workaround for the Rockchip 3588 chip that doesn't
correctly deal with the shareability attributes.
- Replace uses of of_find_property() with the more appropriate
of_property_read_bool()
- Make bcm-6345-l1 request its MMIO region
- Add suspend support to the SiFive PLIC
- Drop support for stih415, stih416 and stid127 platforms
Link: https://lore.kernel.org/lkml/20230421132104.3021536-1-maz@kernel.org
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extin_mask and extout_mask are used only by the SbLive! microcode, so
they have no effect on Audigy.
Eliminate fxbus_mask entirely, as it wasn't actually used for anything.
As a drive-by, remove the pointless pad1 field from struct
snd_emu10k1_fx8010 - it is not visible to user space, so it has no
binary compatibility constraints.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005509-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
1) Set on IPS_CONFIRMED before change_status() otherwise EBUSY is
bogusly hit. This bug was introduced in the 6.3 release cycle.
2) Fix nfnetlink_queue conntrack support: Set/dump timeout
accordingly for unconfirmed conntrack entries. Make sure this
is done after IPS_CONFIRMED is set on. This is an old bug, it
happens since the introduction of this feature.
* tag 'nf-23-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: conntrack: fix wrong ct->timeout value
netfilter: conntrack: restore IPS_CONFIRMED out of nf_conntrack_hash_check_insert()
====================
Link: https://lore.kernel.org/r/20230421105700.325438-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.4
Most likely the last -next pull request for v6.4. We have changes all
over. rtw88 now supports SDIO bus and iwlwifi continues to work on
Wi-Fi 7 support. Not much stack changes this time.
Major changes:
cfg80211/mac80211
- fix some Fine Time Measurement (FTM) frames not being bufferable
- flush frames before key removal to avoid potential unencrypted
transmission depending on the hardware design
iwlwifi
- preparation for Wi-Fi 7 EHT and multi-link support
rtw88
- SDIO bus support
- RTL8822BS, RTL8822CS and RTL8821CS SDIO chipset support
rtw89
- framework firmware backwards compatibility
brcmfmac
- Cypress 43439 SDIO support
mt76
- mt7921 P2P support
- mt7996 mesh A-MSDU support
- mt7996 EHT support
- mt7996 coredump support
wcn36xx
- support for pronto v3 hardware
ath11k
- PCIe DeviceTree bindings
- WCN6750: enable SAR support
ath10k
- convert DeviceTree bindings to YAML
* tag 'wireless-next-2023-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (261 commits)
wifi: rtw88: Update spelling in main.h
wifi: airo: remove ISA_DMA_API dependency
wifi: rtl8xxxu: Simplify setting the initial gain
wifi: rtl8xxxu: Add rtl8xxxu_write{8,16,32}_{set,clear}
wifi: rtl8xxxu: Don't print the vendor/product/serial
wifi: rtw88: Fix memory leak in rtw88_usb
wifi: rtw88: call rtw8821c_switch_rf_set() according to chip variant
wifi: rtw88: set pkg_type correctly for specific rtw8821c variants
wifi: rtw88: rtw8821c: Fix rfe_option field width
wifi: rtw88: usb: fix priority queue to endpoint mapping
wifi: rtw88: 8822c: add iface combination
wifi: rtw88: handle station mode concurrent scan with AP mode
wifi: rtw88: prevent scan abort with other VIFs
wifi: rtw88: refine reserved page flow for AP mode
wifi: rtw88: disallow PS during AP mode
wifi: rtw88: 8822c: extend reserved page number
wifi: rtw88: add port switch for AP mode
wifi: rtw88: add bitmap for dynamic port settings
wifi: rtw89: mac: use regular int as return type of DLE buffer request
wifi: mac80211: remove return value check of debugfs_create_dir()
...
====================
Link: https://lore.kernel.org/r/20230421104726.800BCC433D2@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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TPM specification [1] defines flow control over SPI. Client device can
insert a wait state on MISO when address is transmitted by controller
on MOSI. Detecting the wait state in software is only possible for
full duplex controllers. For controllers that support only half-
duplex, the wait state detection needs to be implemented in hardware.
Add a flag SPI_TPM_HW_FLOW for TPM device to set when software flow
control is not possible and hardware flow control is expected from
SPI controller.
Reference:
[1] https://trustedcomputinggroup.org/resource/pc-client-platform-tpm
-profile-ptp-specification/
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20230421091309.2672-2-kyarlagadda@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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For some unknown reason the introduction of the timer_wait_running callback
missed to fixup posix CPU timers, which went unnoticed for almost four years.
Marco reported recently that the WARN_ON() in timer_wait_running()
triggers with a posix CPU timer test case.
Posix CPU timers have two execution models for expiring timers depending on
CONFIG_POSIX_CPU_TIMERS_TASK_WORK:
1) If not enabled, the expiry happens in hard interrupt context so
spin waiting on the remote CPU is reasonably time bound.
Implement an empty stub function for that case.
2) If enabled, the expiry happens in task work before returning to user
space or guest mode. The expired timers are marked as firing and moved
from the timer queue to a local list head with sighand lock held. Once
the timers are moved, sighand lock is dropped and the expiry happens in
fully preemptible context. That means the expiring task can be scheduled
out, migrated, interrupted etc. So spin waiting on it is more than
suboptimal.
The timer wheel has a timer_wait_running() mechanism for RT, which uses
a per CPU timer-base expiry lock which is held by the expiry code and the
task waiting for the timer function to complete blocks on that lock.
This does not work in the same way for posix CPU timers as there is no
timer base and expiry for process wide timers can run on any task
belonging to that process, but the concept of waiting on an expiry lock
can be used too in a slightly different way:
- Add a mutex to struct posix_cputimers_work. This struct is per task
and used to schedule the expiry task work from the timer interrupt.
- Add a task_struct pointer to struct cpu_timer which is used to store
a the task which runs the expiry. That's filled in when the task
moves the expired timers to the local expiry list. That's not
affecting the size of the k_itimer union as there are bigger union
members already
- Let the task take the expiry mutex around the expiry function
- Let the waiter acquire a task reference with rcu_read_lock() held and
block on the expiry mutex
This avoids spin-waiting on a task which might not even be on a CPU and
works nicely for RT too.
Fixes: ec8f954a40da ("posix-timers: Use a callback for cancel synchronization on PREEMPT_RT")
Reported-by: Marco Elver <elver@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Marco Elver <elver@google.com>
Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/87zg764ojw.ffs@tglx
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* irq/gic-6.4:
: .
: Collection of GIC/GICv3 fixes and cleanups
:
: - Workaround for the nvidia T241 chip that gets confused
: in 3 and 4 socket configurations, leading to the GIC
: malfunctionning in some contexts
:
: - Drop support for non-firmware driven GIC configurarations
: now that the old ARM11MP Cavium board is gone
:
: - Workaround for the Rockchip 3588 chip that doesn't
: correctly deal with the shareability attributes.
: .
irqchip/gic-v3: Add Rockchip 3588001 erratum workaround
irqchip/gicv3: Workaround for NVIDIA erratum T241-FABRIC-4
irqchip/gic: Drop support for board files
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Introduce per-mm/cpu current concurrency id (mm_cid) to fix a PostgreSQL
sysbench regression reported by Aaron Lu.
Keep track of the currently allocated mm_cid for each mm/cpu rather than
freeing them immediately on context switch. This eliminates most atomic
operations when context switching back and forth between threads
belonging to different memory spaces in multi-threaded scenarios (many
processes, each with many threads). The per-mm/per-cpu mm_cid values are
serialized by their respective runqueue locks.
Thread migration is handled by introducing invocation to
sched_mm_cid_migrate_to() (with destination runqueue lock held) in
activate_task() for migrating tasks. If the destination cpu's mm_cid is
unset, and if the source runqueue is not actively using its mm_cid, then
the source cpu's mm_cid is moved to the destination cpu on migration.
Introduce a task-work executed periodically, similarly to NUMA work,
which delays reclaim of cid values when they are unused for a period of
time.
Keep track of the allocation time for each per-cpu cid, and let the task
work clear them when they are observed to be older than
SCHED_MM_CID_PERIOD_NS and unused. This task work also clears all
mm_cids which are greater or equal to the Hamming weight of the mm
cidmask to keep concurrency ids compact.
Because we want to ensure the mm_cid converges towards the smaller
values as migrations happen, the prior optimization that was done when
context switching between threads belonging to the same mm is removed,
because it could delay the lazy release of the destination runqueue
mm_cid after it has been replaced by a migration. Removing this prior
optimization is not an issue performance-wise because the introduced
per-mm/per-cpu mm_cid tracking also covers this more specific case.
Fixes: af7f588d8f73 ("sched: Introduce per-memory-map concurrency ID")
Reported-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Aaron Lu <aaron.lu@intel.com>
Link: https://lore.kernel.org/lkml/20230327080502.GA570847@ziqianlu-desk2/
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Sync with the urgent patches; in particular:
a53ce18cacb4 ("sched/fair: Sanitize vruntime of entity being migrated")
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
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Packet sockets, like tap, can be used as the backend for kernel vhost.
In packet sockets, virtio net header size is currently hardcoded to be
the size of struct virtio_net_hdr, which is 10 bytes; however, it is not
always the case: some virtio features, such as mrg_rxbuf, need virtio
net header to be 12-byte long.
Mergeable buffers, as a virtio feature, is worthy of supporting: packets
that are larger than one-mbuf size will be dropped in vhost worker's
handle_rx if mrg_rxbuf feature is not used, but large packets
cannot be avoided and increasing mbuf's size is not economical.
With this virtio feature enabled by virtio-user, packet sockets with
hardcoded 10-byte virtio net header will parse mac head incorrectly in
packet_snd by taking the last two bytes of virtio net header as part of
mac header.
This incorrect mac header parsing will cause packet to be dropped due to
invalid ether head checking in later under-layer device packet receiving.
By adding extra field vnet_hdr_sz with utilizing holes in struct
packet_sock to record currently used virtio net header size and supporting
extra sockopt PACKET_VNET_HDR_SZ to set specified vnet_hdr_sz, packet
sockets can know the exact length of virtio net header that virtio user
gives.
In packet_snd, tpacket_snd and packet_recvmsg, instead of using
hardcoded virtio net header size, it can get the exact vnet_hdr_sz from
corresponding packet_sock, and parse mac header correctly based on this
information to avoid the packets being mistakenly dropped.
Signed-off-by: Jianfeng Tan <henry.tjf@antgroup.com>
Co-developed-by: Anqi Shen <amy.saq@antgroup.com>
Signed-off-by: Anqi Shen <amy.saq@antgroup.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The auto-silencer supports two modes: "thresholded" to fill up "just
enough", and "top-up" to fill up "as much as possible". The two modes
used rather distinct code paths, which this patch unifies. The only
remaining distinction is how much we actually want to fill.
This fixes a bug in thresholded mode, where we failed to use new_hw_ptr,
resulting in under-fill.
Top-up mode is now more well-behaved and much easier to understand in
corner cases.
This also updates comments in the proximity of silencing-related data
structures.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230420113324.877164-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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* kvm-arm64/smccc-filtering:
: .
: SMCCC call filtering and forwarding to userspace, courtesy of
: Oliver Upton. From the cover letter:
:
: "The Arm SMCCC is rather prescriptive in regards to the allocation of
: SMCCC function ID ranges. Many of the hypercall ranges have an
: associated specification from Arm (FF-A, PSCI, SDEI, etc.) with some
: room for vendor-specific implementations.
:
: The ever-expanding SMCCC surface leaves a lot of work within KVM for
: providing new features. Furthermore, KVM implements its own
: vendor-specific ABI, with little room for other implementations (like
: Hyper-V, for example). Rather than cramming it all into the kernel we
: should provide a way for userspace to handle hypercalls."
: .
KVM: selftests: Fix spelling mistake "KVM_HYPERCAL_EXIT_SMC" -> "KVM_HYPERCALL_EXIT_SMC"
KVM: arm64: Test that SMC64 arch calls are reserved
KVM: arm64: Prevent userspace from handling SMC64 arch range
KVM: arm64: Expose SMC/HVC width to userspace
KVM: selftests: Add test for SMCCC filter
KVM: selftests: Add a helper for SMCCC calls with SMC instruction
KVM: arm64: Let errors from SMCCC emulation to reach userspace
KVM: arm64: Return NOT_SUPPORTED to guest for unknown PSCI version
KVM: arm64: Introduce support for userspace SMCCC filtering
KVM: arm64: Add support for KVM_EXIT_HYPERCALL
KVM: arm64: Use a maple tree to represent the SMCCC filter
KVM: arm64: Refactor hvc filtering to support different actions
KVM: arm64: Start handling SMCs from EL1
KVM: arm64: Rename SMC/HVC call handler to reflect reality
KVM: arm64: Add vm fd device attribute accessors
KVM: arm64: Add a helper to check if a VM has ran once
KVM: x86: Redefine 'longmode' as a flag for KVM_EXIT_HYPERCALL
Signed-off-by: Marc Zyngier <maz@kernel.org>
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* kvm-arm64/timer-vm-offsets: (21 commits)
: .
: This series aims at satisfying multiple goals:
:
: - allow a VMM to atomically restore a timer offset for a whole VM
: instead of updating the offset each time a vcpu get its counter
: written
:
: - allow a VMM to save/restore the physical timer context, something
: that we cannot do at the moment due to the lack of offsetting
:
: - provide a framework that is suitable for NV support, where we get
: both global and per timer, per vcpu offsetting, and manage
: interrupts in a less braindead way.
:
: Conflict resolution involves using the new per-vcpu config lock instead
: of the home-grown timer lock.
: .
KVM: arm64: Handle 32bit CNTPCTSS traps
KVM: arm64: selftests: Augment existing timer test to handle variable offset
KVM: arm64: selftests: Deal with spurious timer interrupts
KVM: arm64: selftests: Add physical timer registers to the sysreg list
KVM: arm64: nv: timers: Support hyp timer emulation
KVM: arm64: nv: timers: Add a per-timer, per-vcpu offset
KVM: arm64: Document KVM_ARM_SET_CNT_OFFSETS and co
KVM: arm64: timers: Abstract the number of valid timers per vcpu
KVM: arm64: timers: Fast-track CNTPCT_EL0 trap handling
KVM: arm64: Elide kern_hyp_va() in VHE-specific parts of the hypervisor
KVM: arm64: timers: Move the timer IRQs into arch_timer_vm_data
KVM: arm64: timers: Abstract per-timer IRQ access
KVM: arm64: timers: Rationalise per-vcpu timer init
KVM: arm64: timers: Allow save/restoring of the physical timer
KVM: arm64: timers: Allow userspace to set the global counter offset
KVM: arm64: Expose {un,}lock_all_vcpus() to the rest of KVM
KVM: arm64: timers: Allow physical offset without CNTPOFF_EL2
KVM: arm64: timers: Use CNTPOFF_EL2 to offset the physical timer
arm64: Add HAS_ECV_CNTPOFF capability
arm64: Add CNTPOFF_EL2 register definition
...
Signed-off-by: Marc Zyngier <maz@kernel.org>
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When the Core device gets an event from the device, or notices
the device FW to be up or down, it needs to send those events
on to the clients that have an event handler. Add the code to
pass along the events to the clients.
The entry points pdsc_register_notify() and pdsc_unregister_notify()
are EXPORTed for other drivers that want to listen for these events.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the client API operations for running adminq commands.
The core registers the client with the FW, then the client
has a context for requesting adminq services. We expect
to add additional operations for other clients, including
requesting additional private adminqs and IRQs, but don't have
the need yet.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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An auxiliary_bus device is created for each vDPA type VF at VF
probe and destroyed at VF remove. The aux device name comes
from the driver name + VIF type + the unique id assigned at PCI
probe. The VFs are always removed on PF remove, so there should
be no issues with VFs trying to access missing PF structures.
The auxiliary_device names will look like "pds_core.vDPA.nn"
where 'nn' is the VF's uid.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Virtual Interfaces (VIFs) supported by the DSC's
configuration (vDPA, Eth, RDMA, etc) are reported in the
dev_ident struct and made visible in debugfs. At this point
only vDPA is supported in this driver so we only setup
devices for that feature.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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