| Age | Commit message (Collapse) | Author |
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`strncpy` is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.
It seems `cmd->policy_name` is intended to be NUL-terminated based on a
now changed line of code from Commit (c6b4fcbad044e6ff "dm: add cache
target"):
| if (strcmp(cmd->policy_name, policy_name)) { // ...
However, now a length-bounded strncmp is used:
| if (strncmp(cmd->policy_name, policy_name, sizeof(cmd->policy_name)))
... which means NUL-terminated may not strictly be required. However, I
believe the intent of the code is clear and we should maintain
NUL-termination of policy_names.
Moreover, __begin_transaction_flags() zero-allocates `cmd` before
calling read_superblock_fields():
| cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
Also, `disk_super->policy_name` is zero-initialized
| memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));
... therefore any NUL-padding is redundant.
Considering the above, a suitable replacement is `strscpy` [2] due to
the fact that it guarantees NUL-termination on the destination buffer
without unnecessarily NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
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This modification doesn't change behaviour of the syscall_tp
But such code is often used as a reference so it should be
correct anyway
Signed-off-by: Denys Zagorui <dzagorui@cisco.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20231019113521.4103825-1-dzagorui@cisco.com
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Now that we have the ability to display the list of cores
with a feature when its selectivly enabled, lets convert
DBM to use that as well.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Link: https://lore.kernel.org/r/20231017052322.1211099-3-jeremy.linton@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The AMU feature can be enabled on a subset of the cores in a system.
Because of that, it prints a message for each core as it is detected.
This becomes tedious when there are hundreds of cores. Instead, for
CPU features which can be enabled on a subset of the present cores,
lets wait until update_cpu_capabilities() and print the subset of cores
the feature was enabled on.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Punit Agrawal <punit.agrawal@bytedance.com>
Tested-by: Punit Agrawal <punit.agrawal@bytedance.com>
Link: https://lore.kernel.org/r/20231017052322.1211099-2-jeremy.linton@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Mapping symbols emitted in the readelf output can confuse the
'faddr2line' symbol size calculation, resulting in the erroneous
rejection of valid offsets. This is especially prevalent when building
an arm64 kernel with CONFIG_CFI_CLANG=y, where most functions are
prefixed with a 32-bit data value in a '$d.n' section. For example:
447538: ffff800080014b80 548 FUNC GLOBAL DEFAULT 2 do_one_initcall
104: ffff800080014c74 0 NOTYPE LOCAL DEFAULT 2 $x.73
106: ffff800080014d30 0 NOTYPE LOCAL DEFAULT 2 $x.75
111: ffff800080014da4 0 NOTYPE LOCAL DEFAULT 2 $d.78
112: ffff800080014da8 0 NOTYPE LOCAL DEFAULT 2 $x.79
36: ffff800080014de0 200 FUNC LOCAL DEFAULT 2 run_init_process
Adding a warning to do_one_initcall() results in:
| WARNING: CPU: 0 PID: 1 at init/main.c:1236 do_one_initcall+0xf4/0x260
Which 'faddr2line' refuses to accept:
$ ./scripts/faddr2line vmlinux do_one_initcall+0xf4/0x260
skipping do_one_initcall address at 0xffff800080014c74 due to size mismatch (0x260 != 0x224)
no match for do_one_initcall+0xf4/0x260
Filter out these entries from readelf using a shell reimplementation of
is_mapping_symbol(), so that the size of a symbol is calculated as a
delta to the next symbol present in ksymtab.
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20231002165750.1661-4-will@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
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GNU utilities cannot necessarily parse objects built by LLVM, which can
result in confusing errors when using 'faddr2line':
$ CROSS_COMPILE=aarch64-linux-gnu- ./scripts/faddr2line vmlinux do_one_initcall+0xf4/0x260
aarch64-linux-gnu-addr2line: vmlinux: unknown type [0x13] section `.relr.dyn'
aarch64-linux-gnu-addr2line: DWARF error: invalid or unhandled FORM value: 0x25
do_one_initcall+0xf4/0x260:
aarch64-linux-gnu-addr2line: vmlinux: unknown type [0x13] section `.relr.dyn'
aarch64-linux-gnu-addr2line: DWARF error: invalid or unhandled FORM value: 0x25
$x.73 at main.c:?
Although this can be worked around by setting CROSS_COMPILE to "llvm=-",
it's cleaner to follow the same syntax as the top-level Makefile and
accept LLVM= as an indication to use the llvm- tools, optionally
specifying their location or specific version number.
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20231002165750.1661-3-will@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
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As Josh points out in 20230724234734.zy67gm674vl3p3wv@treble:
> Problem is, I think the kernel's symbol printing code prints the
> nearest kallsyms symbol, and there are some valid non-FUNC code
> symbols. For example, syscall_return_via_sysret.
so we shouldn't be considering only 'FUNC'-type symbols in the output
from readelf.
Drop the function symbol type filtering from the faddr2line outer loop.
Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20230724234734.zy67gm674vl3p3wv@treble
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20231002165750.1661-2-will@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
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When creating a snapshot of a subvolume that was created in the current
transaction, we can end up not persisting a dirty extent buffer that is
referenced by the snapshot, resulting in IO errors due to checksum failures
when trying to read the extent buffer later from disk. A sequence of steps
that leads to this is the following:
1) At ioctl.c:create_subvol() we allocate an extent buffer, with logical
address 36007936, for the leaf/root of a new subvolume that has an ID
of 291. We mark the extent buffer as dirty, and at this point the
subvolume tree has a single node/leaf which is also its root (level 0);
2) We no longer commit the transaction used to create the subvolume at
create_subvol(). We used to, but that was recently removed in
commit 1b53e51a4a8f ("btrfs: don't commit transaction for every subvol
create");
3) The transaction used to create the subvolume has an ID of 33, so the
extent buffer 36007936 has a generation of 33;
4) Several updates happen to subvolume 291 during transaction 33, several
files created and its tree height changes from 0 to 1, so we end up with
a new root at level 1 and the extent buffer 36007936 is now a leaf of
that new root node, which is extent buffer 36048896.
The commit root remains as 36007936, since we are still at transaction
33;
5) Creation of a snapshot of subvolume 291, with an ID of 292, starts at
ioctl.c:create_snapshot(). This triggers a commit of transaction 33 and
we end up at transaction.c:create_pending_snapshot(), in the critical
section of a transaction commit.
There we COW the root of subvolume 291, which is extent buffer 36048896.
The COW operation returns extent buffer 36048896, since there's no need
to COW because the extent buffer was created in this transaction and it
was not written yet.
The we call btrfs_copy_root() against the root node 36048896. During
this operation we allocate a new extent buffer to turn into the root
node of the snapshot, copy the contents of the root node 36048896 into
this snapshot root extent buffer, set the owner to 292 (the ID of the
snapshot), etc, and then we call btrfs_inc_ref(). This will create a
delayed reference for each leaf pointed by the root node with a
reference root of 292 - this includes a reference for the leaf
36007936.
After that we set the bit BTRFS_ROOT_FORCE_COW in the root's state.
Then we call btrfs_insert_dir_item(), to create the directory entry in
in the tree of subvolume 291 that points to the snapshot. This ends up
needing to modify leaf 36007936 to insert the respective directory
items. Because the bit BTRFS_ROOT_FORCE_COW is set for the root's state,
we need to COW the leaf. We end up at btrfs_force_cow_block() and then
at update_ref_for_cow().
At update_ref_for_cow() we call btrfs_block_can_be_shared() which
returns false, despite the fact the leaf 36007936 is shared - the
subvolume's root and the snapshot's root point to that leaf. The
reason that it incorrectly returns false is because the commit root
of the subvolume is extent buffer 36007936 - it was the initial root
of the subvolume when we created it. So btrfs_block_can_be_shared()
which has the following logic:
int btrfs_block_can_be_shared(struct btrfs_root *root,
struct extent_buffer *buf)
{
if (test_bit(BTRFS_ROOT_SHAREABLE, &root->state) &&
buf != root->node && buf != root->commit_root &&
(btrfs_header_generation(buf) <=
btrfs_root_last_snapshot(&root->root_item) ||
btrfs_header_flag(buf, BTRFS_HEADER_FLAG_RELOC)))
return 1;
return 0;
}
Returns false (0) since 'buf' (extent buffer 36007936) matches the
root's commit root.
As a result, at update_ref_for_cow(), we don't check for the number
of references for extent buffer 36007936, we just assume it's not
shared and therefore that it has only 1 reference, so we set the local
variable 'refs' to 1.
Later on, in the final if-else statement at update_ref_for_cow():
static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *buf,
struct extent_buffer *cow,
int *last_ref)
{
(...)
if (refs > 1) {
(...)
} else {
(...)
btrfs_clear_buffer_dirty(trans, buf);
*last_ref = 1;
}
}
So we mark the extent buffer 36007936 as not dirty, and as a result
we don't write it to disk later in the transaction commit, despite the
fact that the snapshot's root points to it.
Attempting to access the leaf or dumping the tree for example shows
that the extent buffer was not written:
$ btrfs inspect-internal dump-tree -t 292 /dev/sdb
btrfs-progs v6.2.2
file tree key (292 ROOT_ITEM 33)
node 36110336 level 1 items 2 free space 119 generation 33 owner 292
node 36110336 flags 0x1(WRITTEN) backref revision 1
checksum stored a8103e3e
checksum calced a8103e3e
fs uuid 90c9a46f-ae9f-4626-9aff-0cbf3e2e3a79
chunk uuid e8c9c885-78f4-4d31-85fe-89e5f5fd4a07
key (256 INODE_ITEM 0) block 36007936 gen 33
key (257 EXTENT_DATA 0) block 36052992 gen 33
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
total bytes 107374182400
bytes used 38572032
uuid 90c9a46f-ae9f-4626-9aff-0cbf3e2e3a79
The respective on disk region is full of zeroes as the device was
trimmed at mkfs time.
Obviously 'btrfs check' also detects and complains about this:
$ btrfs check /dev/sdb
Opening filesystem to check...
Checking filesystem on /dev/sdb
UUID: 90c9a46f-ae9f-4626-9aff-0cbf3e2e3a79
generation: 33 (33)
[1/7] checking root items
[2/7] checking extents
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
bad tree block 36007936, bytenr mismatch, want=36007936, have=0
owner ref check failed [36007936 4096]
ERROR: errors found in extent allocation tree or chunk allocation
[3/7] checking free space tree
[4/7] checking fs roots
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
checksum verify failed on 36007936 wanted 0x00000000 found 0x86005f29
bad tree block 36007936, bytenr mismatch, want=36007936, have=0
The following tree block(s) is corrupted in tree 292:
tree block bytenr: 36110336, level: 1, node key: (256, 1, 0)
root 292 root dir 256 not found
ERROR: errors found in fs roots
found 38572032 bytes used, error(s) found
total csum bytes: 16048
total tree bytes: 1265664
total fs tree bytes: 1118208
total extent tree bytes: 65536
btree space waste bytes: 562598
file data blocks allocated: 65978368
referenced 36569088
Fix this by updating btrfs_block_can_be_shared() to consider that an
extent buffer may be shared if it matches the commit root and if its
generation matches the current transaction's generation.
This can be reproduced with the following script:
$ cat test.sh
#!/bin/bash
MNT=/mnt/sdi
DEV=/dev/sdi
# Use a filesystem with a 64K node size so that we have the same node
# size on every machine regardless of its page size (on x86_64 default
# node size is 16K due to the 4K page size, while on PPC it's 64K by
# default). This way we can make sure we are able to create a btree for
# the subvolume with a height of 2.
mkfs.btrfs -f -n 64K $DEV
mount $DEV $MNT
btrfs subvolume create $MNT/subvol
# Create a few empty files on the subvolume, this bumps its btree
# height to 2 (root node at level 1 and 2 leaves).
for ((i = 1; i <= 300; i++)); do
echo -n > $MNT/subvol/file_$i
done
btrfs subvolume snapshot -r $MNT/subvol $MNT/subvol/snap
umount $DEV
btrfs check $DEV
Running it on a 6.5 kernel (or any 6.6-rc kernel at the moment):
$ ./test.sh
Create subvolume '/mnt/sdi/subvol'
Create a readonly snapshot of '/mnt/sdi/subvol' in '/mnt/sdi/subvol/snap'
Opening filesystem to check...
Checking filesystem on /dev/sdi
UUID: bbdde2ff-7d02-45ca-8a73-3c36f23755a1
[1/7] checking root items
[2/7] checking extents
parent transid verify failed on 30539776 wanted 7 found 5
parent transid verify failed on 30539776 wanted 7 found 5
parent transid verify failed on 30539776 wanted 7 found 5
Ignoring transid failure
owner ref check failed [30539776 65536]
ERROR: errors found in extent allocation tree or chunk allocation
[3/7] checking free space tree
[4/7] checking fs roots
parent transid verify failed on 30539776 wanted 7 found 5
Ignoring transid failure
Wrong key of child node/leaf, wanted: (256, 1, 0), have: (2, 132, 0)
Wrong generation of child node/leaf, wanted: 5, have: 7
root 257 root dir 256 not found
ERROR: errors found in fs roots
found 917504 bytes used, error(s) found
total csum bytes: 0
total tree bytes: 851968
total fs tree bytes: 393216
total extent tree bytes: 65536
btree space waste bytes: 736550
file data blocks allocated: 0
referenced 0
A test case for fstests will follow soon.
Fixes: 1b53e51a4a8f ("btrfs: don't commit transaction for every subvol create")
CC: stable@vger.kernel.org # 6.5+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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These will show up as monospace, and will get linkified as soon as
we document the macro they point to.
Signed-off-by: Simon Ser <contact@emersion.fr>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230712135723.173506-1-contact@emersion.fr
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Replace 'pack' with 'back'.
Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.")
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231023085929.1445594-1-dario.binacchi@amarulasolutions.com
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strncpy() is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous
interfaces.
We expect ec_fw_string to be NUL-terminated based on its use with format
strings in thinkpad_acpi.c:
11241 | pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
11242 | ec_fw_string);
Moreover, NUL-padding is not required since ec_fw_string is explicitly
zero-initialized:
11185 | char ec_fw_string[18] = {0};
When carefully copying bytes from one buffer to another in
pre-determined blocks (like what's happening here with dmi_data):
| static void find_new_ec_fwstr(const struct dmi_header *dm, void *private)
| {
| char *ec_fw_string = (char *) private;
| const char *dmi_data = (const char *)dm;
| /*
| * ThinkPad Embedded Controller Program Table on newer models
| *
| * Offset | Name | Width | Description
| * ----------------------------------------------------
| * 0x00 | Type | BYTE | 0x8C
| * 0x01 | Length | BYTE |
| * 0x02 | Handle | WORD | Varies
| * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO"
| * 0x0A | OEM struct offset | BYTE | 0x0B
| * 0x0B | OEM struct number | BYTE | 0x07, for this structure
| * 0x0C | OEM struct revision | BYTE | 0x01, for this format
| * 0x0D | ECP version ID | STR ID |
| * 0x0E | ECP release date | STR ID |
| */
|
| /* Return if data structure not match */
| if (dm->type != 140 || dm->length < 0x0F ||
| memcmp(dmi_data + 4, "LENOVO", 6) != 0 ||
| dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 ||
| dmi_data[0x0C] != 0x01)
| return;
|
| /* fwstr is the first 8byte string */
| strncpy(ec_fw_string, dmi_data + 0x0F, 8);
... we shouldn't be using a C string api. Let's instead use memcpy() as
this more properly relays the intended behavior.
Do note that ec_fw_string will still end up being NUL-terminated since
we are memcpy'ing only 8 bytes into a buffer full of 18 zeroes. There's
still some trailing NUL-bytes there. To ensure this behavior, let's add
a BUILD_BUG_ON checking the length leaves space for at least one
trailing NUL-byte.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://github.com/KSPP/linux/issues/90
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20231020-strncpy-drivers-platform-x86-thinkpad_acpi-c-v1-1-312f2e33034f@google.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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These flags are not made conditional on compiler support because at the
moment exactly one version of rustc supported, and that one supports
these flags.
Building without these additional flags will manifest as objtool
printing a large number of errors about missing ENDBR and if CFI is
enabled (not currently possible) will result in incorrectly structured
function prefixes.
Signed-off-by: Matthew Maurer <mmaurer@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231009224347.2076221-1-mmaurer@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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'rcu/tasks' and 'rcu/stall' into rcu/next
rcu/torture: RCU torture, locktorture and generic torture infrastructure
rcu/fixes: Generic and misc fixes
rcu/docs: RCU documentation updates
rcu/refscale: RCU reference scalability test updates
rcu/tasks: RCU tasks updates
rcu/stall: Stall detection updates
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Without this, the newly added drivers fail to link:
aarch64-linux-ld: drivers/clk/meson/s4-pll.o: in function `meson_s4_pll_probe':
s4-pll.c:(.text+0x13c): undefined reference to `meson_clk_hw_get'
aarch64-linux-ld: drivers/clk/meson/s4-peripherals.o: in function `meson_s4_periphs_probe':
s4-peripherals.c:(.text+0xb0): undefined reference to `meson_clk_hw_get'
Fixes: e787c9c55eda ("clk: meson: S4: add support for Amlogic S4 SoC PLL clock driver")
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20231023102810.4001943-1-arnd@kernel.org
[jbrunet: use 12 char for the Fixes as recommended ]
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Looks like the KFD still needs this.
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 8abc1eb2987a ("drm/amdkfd: switch over to using drm_exec v3")
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231020123306.43978-1-christian.koenig@amd.com
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Finally enable independent per-DTC-domain counter allocation, except on
CMN-600 where we still need to cope with not knowing the domain topology
and thus keep counter indices sychronised across domains. This allows
users to simultaneously count up to 8 targeted events per domain, rather
than 8 globally, for up to 4x wider coverage on maximum configurations.
Even though this now looks deceptively simple, I stand by my previous
assertion that it was a flippin' nightmare to implement; all the real
head-scratchers are hidden in the foundations in the previous patch...
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/849f65566582cb102c6d0843d0f26e231180f8ac.1697824215.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
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The bitmap-based scheme for tracking DTC counter usage turns out to be a
complete dead-end for its imagined purpose, since by the time we have to
keep track of a per-DTC counter index anyway, we already have enough
information to make the bitmap itself redundant. Revert the remains of
it back to almost the original scheme, but now expanded to track per-DTC
indices, in preparation for making use of them in anger.
Note that since cycle count events always use a dedicated counter on a
single DTC, we reuse the field to encode their DTC index directly.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/5f6ade76b47f033836d7a36c03555da896dfb4a3.1697824215.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
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It transpires that dtm_unit_info is another register which got shuffled
in CMN-700 without me noticing. Fix that in a way which also proactively
fixes the fragile laziness of its consumer, just in case any further
fields ever get added alongside dtc_domain.
Fixes: 23760a014417 ("perf/arm-cmn: Add CMN-700 support")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/3076ee83d0554f6939fbb6ee49ab2bdb28d8c7ee.1697824215.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
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Currently, the built-in 64-byte FIFO on the MCSPI controller is not
enabled in PIO mode and is used only when DMA is enabled. Enable the
FIFO in PIO mode by default for transactions larger than the FIFO depth
and fallback only if FIFO is not available. When DMA is not enabled,
it is efficient to enable the RX FIFO almost full and TX FIFO almost
empty events after each FIFO fill instead of each word.
Update omap2_mcspi_set_fifo() to enable the events accordingly and
also rely on OMAP2_MCSPI_CHSTAT_RXS for the last transfer instead of the
FIFO events to handle the case when the transfer size is not a multiple
of FIFO depth.
See J721E Technical Reference Manual (SPRUI1C), section 12.1.5
for further details: http://www.ti.com/lit/pdf/spruil1
Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Link: https://lore.kernel.org/r/20231013092629.19005-1-vaishnav.a@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add ADI MAX77503 buck converter devicetree document.
Signed-off-by: Gokhan Celik <gokhan.celik@analog.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/fb2cb32219eb1a5f85169d6c85cd2c057c5bb4a9.1698000185.git.gokhan.celik@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add ADI MAX77503 buck converter driver support.
Signed-off-by: Gokhan Celik <gokhan.celik@analog.com>
Link: https://lore.kernel.org/r/10bb3894fea31a098d768e346c8721e730d7cb21.1698000185.git.gokhan.celik@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Erhard reported that his G5 was crashing with v6.6-rc kernels:
mpic: Setting up HT PICs workarounds for U3/U4
BUG: Unable to handle kernel data access at 0xfeffbb62ffec65fe
Faulting instruction address: 0xc00000000005dc40
Oops: Kernel access of bad area, sig: 11 [#1]
BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 PowerMac
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G T 6.6.0-rc3-PMacGS #1
Hardware name: PowerMac11,2 PPC970MP 0x440101 PowerMac
NIP: c00000000005dc40 LR: c000000000066660 CTR: c000000000007730
REGS: c0000000022bf510 TRAP: 0380 Tainted: G T (6.6.0-rc3-PMacGS)
MSR: 9000000000001032 <SF,HV,ME,IR,DR,RI> CR: 44004242 XER: 00000000
IRQMASK: 3
GPR00: 0000000000000000 c0000000022bf7b0 c0000000010c0b00 00000000000001ac
GPR04: 0000000003c80000 0000000000000300 c0000000f20001ae 0000000000000300
GPR08: 0000000000000006 feffbb62ffec65ff 0000000000000001 0000000000000000
GPR12: 9000000000001032 c000000002362000 c000000000f76b80 000000000349ecd8
GPR16: 0000000002367ba8 0000000002367f08 0000000000000006 0000000000000000
GPR20: 00000000000001ac c000000000f6f920 c0000000022cd985 000000000000000c
GPR24: 0000000000000300 00000003b0a3691d c0003e008030000e 0000000000000000
GPR28: c00000000000000c c0000000f20001ee feffbb62ffec65fe 00000000000001ac
NIP hash_page_do_lazy_icache+0x50/0x100
LR __hash_page_4K+0x420/0x590
Call Trace:
hash_page_mm+0x364/0x6f0
do_hash_fault+0x114/0x2b0
data_access_common_virt+0x198/0x1f0
--- interrupt: 300 at mpic_init+0x4bc/0x10c4
NIP: c000000002020a5c LR: c000000002020a04 CTR: 0000000000000000
REGS: c0000000022bf9f0 TRAP: 0300 Tainted: G T (6.6.0-rc3-PMacGS)
MSR: 9000000000001032 <SF,HV,ME,IR,DR,RI> CR: 24004248 XER: 00000000
DAR: c0003e008030000e DSISR: 40000000 IRQMASK: 1
...
NIP mpic_init+0x4bc/0x10c4
LR mpic_init+0x464/0x10c4
--- interrupt: 300
pmac_setup_one_mpic+0x258/0x2dc
pmac_pic_init+0x28c/0x3d8
init_IRQ+0x90/0x140
start_kernel+0x57c/0x78c
start_here_common+0x1c/0x20
A bisect pointed to the breakage beginning with commit 9fee28baa601 ("powerpc:
implement the new page table range API").
Analysis of the oops pointed to a struct page with a corrupted
compound_head being loaded via page_folio() -> _compound_head() in
hash_page_do_lazy_icache().
The access by the mpic code is to an MMIO address, so the expectation
is that the struct page for that address would be initialised by
init_unavailable_range(), as pointed out by Aneesh.
Instrumentation showed that was not the case, which eventually lead to
the realisation that pfn_valid() was returning false for that address,
causing the struct page to not be initialised.
Because the system is using FLATMEM, the version of pfn_valid() in
memory_model.h is used:
static inline int pfn_valid(unsigned long pfn)
{
...
return pfn >= pfn_offset && (pfn - pfn_offset) < max_mapnr;
}
Which relies on max_mapnr being initialised. Early in boot max_mapnr is
zero meaning no PFNs are valid.
max_mapnr is initialised in mem_init() called via:
start_kernel()
mm_core_init() # init/main.c:928
mem_init()
But that is too late for the usage in init_unavailable_range() called via:
start_kernel()
setup_arch() # init/main.c:893
paging_init()
free_area_init()
init_unavailable_range()
Although max_mapnr is currently set in mem_init(), the value is actually
already available much earlier, as soon as mem_topology_setup() has
completed, which is also before paging_init() is called. So move the
initialisation there, which causes paging_init() to correctly initialise
the struct page and fixes the bug.
This bug seems to have been lurking for years, but went unnoticed
because the pre-folio code was inspecting the uninitialised page->flags
but not dereferencing it.
Thanks to Erhard and Aneesh for help debugging.
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Closes: https://lore.kernel.org/all/20230929132750.3cd98452@yea/
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231023112500.1550208-1-mpe@ellerman.id.au
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Not all public action frames have a protected variant. When MFP is
enabled drop only public action frames that have a dual protected
variant.
Fixes: 76a3059cf124 ("wifi: mac80211: drop some unprotected action frames")
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231016145213.2973e3c8d3bb.I6198b8d3b04cf4a97b06660d346caec3032f232a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The warning here shouldn't be done before we even set the
bss field (or should've used the input data). Move the
assignment before the warning to fix it.
We noticed this now because of Wen's bugfix, where the bug
fixed there had previously hidden this other bug.
Fixes: 53ad07e9823b ("wifi: cfg80211: support reporting failed links")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Confusing struct member names here resulted in passing
the wrong pointer, causing crashes. Pass the correct one.
Fixes: eb142608e2c4 ("wifi: cfg80211: use a struct for inform_single_bss data")
Signed-off-by: Ben Greear <greearb@candelatech.com>
Link: https://lore.kernel.org/r/20231021154827.1142734-1-greearb@candelatech.com
[rewrite commit message, add fixes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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On the one hand Eugen has taken responsibilities outside Microchip, on the
other hand I have some experience with the Microchip SDMMC SDHCI
controller. Change Eugen as reviewer and take over maintainership of the
SDHCI MICROCHIP DRIVER. Also, take over maintainership of its predecessor,
that is the MCI MICROCHIP DRIVER.
Signed-off-by: Aubin Constans <aubin.constans@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Eugen Hristev <eugen.hristev@collabora.com>
Link: https://lore.kernel.org/r/20230911153246.137148-1-aubin.constans@microchip.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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To be able to more easily understand the code, drop robust
action frames before being associated, even if there's no
MFP in the end, as they are Class 3 Frames and shouldn't
be transmitted in the first place.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231001125722.b2fd37083371.Ie9f4906e2f6c698989bce6681956ed2f9454f27c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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STA/P2PClient
In 4way handshake offload, cfg80211_port_authorized enables driver
to indicate successful 4way handshake to cfg80211 layer. Currently
this path of port authorization is restricted to interface type
NL80211_IFTYPE_STATION and NL80211_IFTYPE_P2P_CLIENT. This patch
extends the support for NL80211_IFTYPE_AP and NL80211_IFTYPE_P2P_GO
interfaces to authorize peer STA/P2P_CLIENT, whenever authentication
is offloaded on the AP/P2P_GO interface.
Signed-off-by: Vinayak Yadawad <vinayak.yadawad@broadcom.com>
Link: https://lore.kernel.org/r/dee3b0a2b4f617e932c90bff4504a89389273632.1695721435.git.vinayak.yadawad@broadcom.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since 'tz_device' is an in-place member of 'struct iwl_mvm', it can't
be NULL and so relevant check may be dropped. Compile tested only.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231003092048.24998-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Start supporting API version 86 for new devices.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.e2f720799600.I6e22188a47efe0cbb4e013259955c4019843799f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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By definition, this DSM func is valid only for HR/JF RF types.
Until now firmware ignored this bit (if set) on other than the
above types, but in future firmware versions sending this bit
will lead to firmware 0x3426 assert.
Avoid that by verifying the HW in driver first.
Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.eec3b5d6152f.Ibc7ffe5ef1c156d878f1300c6059c6c91b374114@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Worst case it's extra (garbage) data, best case we see why
things failed ... Seems the trade-off is better if we print
it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.30e614ecd540.I47324f555ebcf22d0dd0afa94e7ca0af53a9fdba@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When the vif is in MLD mode, we'll get a vif links change from
non-zero to zero on disassociation, which removes all links in
the firmware and adds the 'deflink' the driver/mac80211 has.
This causes the firmware to clear some internal state.
However, in non-MLD mode, this doesn't happen, and causes some
state to be left around in firmware, which can particularly
cause trouble with the ref-BSSID in multi-BSSID, leading to an
assert later if immediately making a new multi-BSSID connection
with a different ref-BSSID.
Fix this by removing/re-adding the link in the non-MLD case
when the channel is removed from the vif. This way, all of the
state will get cleared out, even if we need the deflink, which
is more for software architecture purposes than otherwise.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.90c82837ba4d.I341fa30c480f7673b14b48a0e29a2241472c2e13@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If upper layers requested a TX status, then the frames are
more important, so trace frames in that case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.0dfb60a2eaec.I3c3e46ed0eb05700a4d05d293f80d727354a402f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If a TX queue has no space for new TX frames, the driver will keep
these frames in the overflow queue, and during reclaim flow it
will retry to send the frames from that queue.
But if the reclaim flow was invoked from TX queue flush, we will also
TX these frames, which is wrong as we don't want to TX anything
after flush.
This might also cause assert 0x125F when removing the queue,
saying that the driver removes a non-empty queue
Fix this by TXing the overflow queue's frames only if we are
not in flush queue flow.
Fixes: a44509805895 ("iwlwifi: move reclaim flows to the queue file")
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.caf06c8709d9.Ibf664ccb3f952e836f8fa461ea58fc08e5c46e88@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Driver need to provide details of VLP, AFC
AP type supported for the specific MCC to firmware.
Driver will read the UATS (UHB AP type support) table
from BIOS and sent to firmware using UATS_TABLE_CMD.
Add the support for the same in the driver.
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.eb6cf7be17b2.I8977a660564412056d9fd383d57b236cd4b22d00@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Expand RLC logging to simplify the debug.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.ec227229263f.Iea36e64d4092e04ad561beb87002c7bb8c52596f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add debgufs handler for fw system statistics command.
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.e77efee7cd85.I99f370f26f94f73e06aec2a8eaf21ebcc82f60a9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The new firmware API uses a new command and notification,
the command configures in which statistics types driver is
interested and the notification is sent periodically.
An additional change in the API is that most of the statistics
data is accumulated and reported by the firmware per MLO link.
Implement new command and notification handlers and adjust to
per-link statistics.
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.8cc7df0ebff2.If1dcb57145841c5b3c68ed112bbfcd0201f7acc3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In order to get regulatory domain, driver sends MCC_UPDATE_CMD to the
FW. One of the parameters in the response is the status which can tell
if the regdomain has changed or not.
When iwl_mvm_init_mcc() is called during iwl_op_mode_mvm_start(), then
sband is still NULL and channel parameters (i.e. chan->flags) cannot be
initialized. When, further in the flow, iwl_mvm_update_mcc() is called
during iwl_mvm_up(), it first checks if the regdomain has changed and
then skips the update if it remains the same. But, since channel
parameters weren't initialized yet, the update should be forced in this
codepath. Fix that by adding a corresponding parameter to
iwl_mvm_init_fw_regd().
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.78b2c5b891b0.Iac49d52e0bfc0317372015607c63ea9276bbb188@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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During the D3 resume flow, all new rekeys are passed from the FW.
Because the FW supports only one IGTK at a time, every IGTK rekey
update should be done by removing the last IGTK. The mvmvif holds a
pointer to the last IGTK for that reason and thus should be updated
when a new IGTK is passed upon resume.
Fixes: 04f78e242fff ("wifi: iwlwifi: mvm: Add support for IGTK in D3 resume flow")
Signed-off-by: Yedidya Benshimol <yedidya.ben.shimol@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.8ceaf7e5ece7.Ief444f6a2703ed76648b4d414f12bb4130bab36e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The firmware / hardware of devices supporting RSS is able to report
duplicates and packets that time out inside the reoder buffer. We can
now remove all the complex logic that was implemented to keep all the Rx
queues more the less synchronized: we used to send a message to all the
queues through the firmware to teach the different queues about what is
the current SSN every 2048 packets.
Now that we rely on the firmware / hardware to detect duplicates, we can
completely remove the code that did that in the driver and it has been
reported that this code was spuriously dropping legit packets.
Suggested-by: Sultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.54cf4d3d5956.Ic06a08c9fb1e1ec315a4b49d632b78b8474dab79@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Multi rx queue allows to spread the load of the Rx streams on different
CPUs. 9000 series required complex synchronization mechanisms from the
driver side since the hardware / firmware is not able to provide
information about duplicate packets and timeouts inside the reordering
buffer.
Users have complained that for newer devices, all those synchronization
mechanisms have caused spurious packet drops. Those packet drops
disappeared if we simplify the code, but unfortunately, we can't have
RSS enabled on 9000 series without this complex code.
Remove support for RSS on 9000 so that we can make the code much simpler
for newer devices and fix the bugs for them.
The down side of this patch is a that all the Rx path will be routed to
a single CPU, but this has never been an issue, the modern CPUs are just
fast enough to cope with all the traffic.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.2917eb8b7af9.Iddd7dcf335387ba46fcbbb6067ef4ff9cd3755a7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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iwl_mvm_remove_link would return an error if the link could not be
removed. However, doing so prevents recovery if a link was not uploaded
to the FW in the first place and the link_info was not allocated or
fw_link_id is not set.
Returning success means that we can still try to continue with adding
new links in change_vif_links.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.f89bc05aadf6.Idc8fbd671362d962c02b1df87fa6258733631580@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
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Check that fw_link_id does not exceed the size of link_id_to_link_conf
array. There's no any codepath that can cause that, but it's still
safer to verify in case fw_link_id gets corrupted.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.3385bd11f423.I2d30fdb464f951c648217553c47901857a0046c7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
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When we want to synchronize the NAPI, which was added in
commit 5af2bb3168db ("wifi: iwlwifi: call napi_synchronize()
before freeing rx/tx queues"), we also need to make sure we
can't actually reschedule the NAPI. Yes, this happens while
interrupts are disabled, but interrupts may still be running
or pending. Also call iwl_pcie_synchronize_irqs() to ensure
we won't reschedule the NAPI.
Fixes: 4cf2f5904d97 ("iwlwifi: queue: avoid memory leak in reset flow")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.a0f4104b479a.Id5c50a944f709092aa6256e32d8c63b2b8d8d3ac@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add the required logic for parsing and dumping this new region.
Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.c859539194e7.I965482de2871e28b09f4572f1aa87ae4e3b366be@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
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We shouldn't advertise arbitrary checksum flags since we had
to remove support for it due to broken hardware.
Fixes: ec18e7d4d20d ("wifi: iwlwifi: mvm: use old checksum for Bz A-step")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.e37327f1a129.Iaee86b00db4db791cd90adaf15384b8c87d2ad49@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In new firmware, we don't need this any more and it won't
be called any more by mac80211, since powersave handling
is all done by firmware. Remove it from the MLD ops.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.1a1ded96ffc2.Ie49d3004acdd6299fb84346c76b2b2b2f195196b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Somehow I managed to put the EHT line in the wrong place and
also didn't indent the center_freq label correctly. Fix it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231017115047.08ac3cf524c0.I538f424e1ab30f73b0af8381224f377893e15526@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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