| Commit message (Collapse) | Author | Age | Files | Lines |
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pageblocks
Currently, memmap_on_memory feature is only supported with memory block
sizes that result in vmemmap pages covering full page blocks. This is
because memory onlining/offlining code requires applicable ranges to be
pageblock-aligned, for example, to set the migratetypes properly.
This patch helps to lift that restriction by reserving more pages than
required for vmemmap space. This helps the start address to be page block
aligned with different memory block sizes. Using this facility implies
the kernel will be reserving some pages for every memoryblock. This
allows the memmap on memory feature to be widely useful with different
memory block size values.
For ex: with 64K page size and 256MiB memory block size, we require 4
pages to map vmemmap pages, To align things correctly we end up adding a
reserve of 28 pages. ie, for every 4096 pages 28 pages get reserved.
Link: https://lkml.kernel.org/r/20230808091501.287660-5-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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DAMOS filter
Update DAMON usage document for newly added DAMON monitoring target type
DAMOS filter.
Link: https://lkml.kernel.org/r/20230802214312.110532-14-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update DAMON ABI document for the newly added DAMON monitoring target type
DAMOS filter.
Link: https://lkml.kernel.org/r/20230802214312.110532-13-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update DAMON design document for the newly added DAMON monitoring target
type DAMOS filter.
Link: https://lkml.kernel.org/r/20230802214312.110532-12-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update DAMON usage document for the newly added address range type DAMOS
filter.
Link: https://lkml.kernel.org/r/20230802214312.110532-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update DAMON ABI document for address ranges type DAMOS filter files.
Link: https://lkml.kernel.org/r/20230802214312.110532-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update DAMON design document's DAMOS filters section for address range
DAMOS filters. Because address range filters are handled by the core
layer and it makes difference in schemes tried regions and schemes
statistics, clearly describe it.
Link: https://lkml.kernel.org/r/20230802214312.110532-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update the DAMON usage document for newly added
schemes/.../tried_regions/total_bytes file and the
update_schemes_tried_bytes command.
Link: https://lkml.kernel.org/r/20230802213222.109841-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update the DAMON ABI document for newly added
schemes/.../tried_regions/total_bytes file and the
update_schemes_tried_bytes command.
Link: https://lkml.kernel.org/r/20230802213222.109841-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The only user of frontswap is zswap, and has been for a long time. Have
swap call into zswap directly and remove the indirection.
[hannes@cmpxchg.org: remove obsolete comment, per Yosry]
Link: https://lkml.kernel.org/r/20230719142832.GA932528@cmpxchg.org
[fengwei.yin@intel.com: don't warn if none swapcache folio is passed to zswap_load]
Link: https://lkml.kernel.org/r/20230810095652.3905184-1-fengwei.yin@intel.com
Link: https://lkml.kernel.org/r/20230717160227.GA867137@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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With 2M PMD-level mapping, we require 32 struct pages and a single vmemmap
page can contain 1024 struct pages (PAGE_SIZE/sizeof(struct page)). Hence
with 64K page size, we don't use vmemmap deduplication for PMD-level
mapping.
[aneesh.kumar@linux.ibm.com: ppc64: don't include radix headers if CONFIG_PPC_RADIX_MMU=n]
Link: https://lkml.kernel.org/r/87zg3jw8km.fsf@linux.ibm.com
Link: https://lkml.kernel.org/r/20230724190759.483013-12-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Introduce bio_first_folio_all() to return a folio, which makes it easier
to use.
Link: https://lkml.kernel.org/r/20230721034451.16412-4-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Suggested-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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On x86, batched and deferred tlb shootdown has lead to 90% performance
increase on tlb shootdown. on arm64, HW can do tlb shootdown without
software IPI. But sync tlbi is still quite expensive.
Even running a simplest program which requires swapout can
prove this is true,
#include <sys/types.h>
#include <unistd.h>
#include <sys/mman.h>
#include <string.h>
int main()
{
#define SIZE (1 * 1024 * 1024)
volatile unsigned char *p = mmap(NULL, SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
memset(p, 0x88, SIZE);
for (int k = 0; k < 10000; k++) {
/* swap in */
for (int i = 0; i < SIZE; i += 4096) {
(void)p[i];
}
/* swap out */
madvise(p, SIZE, MADV_PAGEOUT);
}
}
Perf result on snapdragon 888 with 8 cores by using zRAM
as the swap block device.
~ # perf record taskset -c 4 ./a.out
[ perf record: Woken up 10 times to write data ]
[ perf record: Captured and wrote 2.297 MB perf.data (60084 samples) ]
~ # perf report
# To display the perf.data header info, please use --header/--header-only options.
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 60K of event 'cycles'
# Event count (approx.): 35706225414
#
# Overhead Command Shared Object Symbol
# ........ ....... ................. ......
#
21.07% a.out [kernel.kallsyms] [k] _raw_spin_unlock_irq
8.23% a.out [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore
6.67% a.out [kernel.kallsyms] [k] filemap_map_pages
6.16% a.out [kernel.kallsyms] [k] __zram_bvec_write
5.36% a.out [kernel.kallsyms] [k] ptep_clear_flush
3.71% a.out [kernel.kallsyms] [k] _raw_spin_lock
3.49% a.out [kernel.kallsyms] [k] memset64
1.63% a.out [kernel.kallsyms] [k] clear_page
1.42% a.out [kernel.kallsyms] [k] _raw_spin_unlock
1.26% a.out [kernel.kallsyms] [k] mod_zone_state.llvm.8525150236079521930
1.23% a.out [kernel.kallsyms] [k] xas_load
1.15% a.out [kernel.kallsyms] [k] zram_slot_lock
ptep_clear_flush() takes 5.36% CPU in the micro-benchmark swapping in/out
a page mapped by only one process. If the page is mapped by multiple
processes, typically, like more than 100 on a phone, the overhead would be
much higher as we have to run tlb flush 100 times for one single page.
Plus, tlb flush overhead will increase with the number of CPU cores due to
the bad scalability of tlb shootdown in HW, so those ARM64 servers should
expect much higher overhead.
Further perf annonate shows 95% cpu time of ptep_clear_flush is actually
used by the final dsb() to wait for the completion of tlb flush. This
provides us a very good chance to leverage the existing batched tlb in
kernel. The minimum modification is that we only send async tlbi in the
first stage and we send dsb while we have to sync in the second stage.
With the above simplest micro benchmark, collapsed time to finish the
program decreases around 5%.
Typical collapsed time w/o patch:
~ # time taskset -c 4 ./a.out
0.21user 14.34system 0:14.69elapsed
w/ patch:
~ # time taskset -c 4 ./a.out
0.22user 13.45system 0:13.80elapsed
Also tested with benchmark in the commit on Kunpeng920 arm64 server
and observed an improvement around 12.5% with command
`time ./swap_bench`.
w/o w/
real 0m13.460s 0m11.771s
user 0m0.248s 0m0.279s
sys 0m12.039s 0m11.458s
Originally it's noticed a 16.99% overhead of ptep_clear_flush()
which has been eliminated by this patch:
[root@localhost yang]# perf record -- ./swap_bench && perf report
[...]
16.99% swap_bench [kernel.kallsyms] [k] ptep_clear_flush
It is tested on 4,8,128 CPU platforms and shows to be beneficial on
large systems but may not have improvement on small systems like on
a 4 CPU platform.
Also this patch improve the performance of page migration. Using pmbench
and tries to migrate the pages of pmbench between node 0 and node 1 for
100 times for 1G memory, this patch decrease the time used around 20%
(prev 18.338318910 sec after 13.981866350 sec) and saved the time used
by ptep_clear_flush().
Link: https://lkml.kernel.org/r/20230717131004.12662-5-yangyicong@huawei.com
Tested-by: Yicong Yang <yangyicong@hisilicon.com>
Tested-by: Xin Hao <xhao@linux.alibaba.com>
Tested-by: Punit Agrawal <punit.agrawal@bytedance.com>
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Xin Hao <xhao@linux.alibaba.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Nadav Amit <namit@vmware.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Barry Song <baohua@kernel.org>
Cc: Darren Hart <darren@os.amperecomputing.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: lipeifeng <lipeifeng@oppo.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Let's update the documentation that any signal is sufficient, and add a
comment that not only checking for fatal signals is historical baggage:
changing it now could break existing user space. although unlikely.
For example, when an app provides a custom SIGALRM handler and triggers
memory offlining, the timeout cmd would no longer stop memory offlining,
because SIGALRM would no longer be considered a fatal signal.
Note that using signal_pending() instead of fatal_signal_pending() is
an anti-pattern, but slowly deprecating that behavior to eventually
change it in the far future is probably not worth the effort. If this
ever becomes relevant for user-space, we might want to rethink.
Link: https://lkml.kernel.org/r/20230711174050.603820-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Correct spelling problems as identified by codespell.
Link: https://lkml.kernel.org/r/20230710052223.18254-1-rdunlap@infradead.org
Fixes: facb6011f399 ("HWPOISON: Add soft page offline support")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update the userfaultfd API to advertise this feature as part of feature
flags and supported ioctls (returned upon registration).
Add basic documentation describing the new feature.
Link: https://lkml.kernel.org/r/20230707215540.2324998-7-axelrasmussen@google.com
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Acked-by: Peter Xu <peterx@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Gaosheng Cui <cuigaosheng1@huawei.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
Cc: Jiaqi Yan <jiaqiyan@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nadav Amit <namit@vmware.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suleiman Souhlal <suleiman@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: ZhangPeng <zhangpeng362@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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kmem.limit_in_bytes (v1 way to limit kernel memory usage) has been
deprecated since 58056f77502f ("memcg, kmem: further deprecate
kmem.limit_in_bytes") merged in 5.16. We haven't heard about any serious
users since then but it seems that the mere presence of the file is
causing more harm thatn good. We (SUSE) have had several bug reports from
customers where Docker based containers started to fail because a write to
kmem.limit_in_bytes has failed.
This was unexpected because runc code only expects ENOENT (kmem disabled)
or EBUSY (tasks already running within cgroup). So a new error code was
unexpected and the whole container startup failed. This has been later
addressed by
https://github.com/opencontainers/runc/commit/52390d68040637dfc77f9fda6bbe70952423d380
so current Docker runtimes do not suffer from the problem anymore. There
are still older version of Docker in use and likely hard to get rid of
completely.
Address this by wiping out the file completely and effectively get back to
pre 4.5 era and CONFIG_MEMCG_KMEM=n configuration.
I would recommend backporting to stable trees which have picked up
58056f77502f ("memcg, kmem: further deprecate kmem.limit_in_bytes").
[mhocko@suse.com: restore _KMEM switch case]
Link: https://lkml.kernel.org/r/ZKe5wxdbvPi5Cwd7@dhcp22.suse.cz
Link: https://lkml.kernel.org/r/20230704115240.14672-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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When use_zero_pages is enabled, the calculation of ksm profit is not
correct because ksm zero pages is not counted in. So update the
calculation of KSM profit including the documentation.
Link: https://lkml.kernel.org/r/20230613030942.186041-1-yang.yang29@zte.com.cn
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Xiaokai Ran <ran.xiaokai@zte.com.cn>
Cc: Yang Yang <yang.yang29@zte.com.cn>
Cc: Jiang Xuexin <jiang.xuexin@zte.com.cn>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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As pages_sharing and pages_shared don't include the number of zero pages
merged by KSM, we cannot know how many pages are zero pages placed by KSM
when enabling use_zero_pages, which leads to KSM not being transparent
with all actual merged pages by KSM. In the early days of use_zero_pages,
zero-pages was unable to get unshared by the ways like MADV_UNMERGEABLE so
it's hard to count how many times one of those zeropages was then
unmerged.
But now, unsharing KSM-placed zero page accurately has been achieved, so
we can easily count both how many times a page full of zeroes was merged
with zero-page and how many times one of those pages was then unmerged.
and so, it helps to estimate memory demands when each and every shared
page could get unshared.
So we add ksm_zero_pages under /sys/kernel/mm/ksm/ to show the number
of all zero pages placed by KSM. Meanwhile, we update the Documentation.
Link: https://lkml.kernel.org/r/20230613030934.185944-1-yang.yang29@zte.com.cn
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Xuexin Jiang <jiang.xuexin@zte.com.cn>
Reviewed-by: Xiaokai Ran <ran.xiaokai@zte.com.cn>
Reviewed-by: Yang Yang <yang.yang29@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small TTY and serial driver fixes for 6.5-rc4 for some
reported problems. Included in here is:
- TIOCSTI fix for braille readers
- documentation fix for minor numbers
- MAINTAINERS update for new serial files in -rc1
- minor serial driver fixes for reported problems
All of these have been in linux-next with no reported problems"
* tag 'tty-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: 8250_dw: Preserve original value of DLF register
tty: serial: sh-sci: Fix sleeping in atomic context
serial: sifive: Fix sifive_serial_console_setup() section
Documentation: devices.txt: reconcile serial/ucc_uart minor numers
MAINTAINERS: Update TTY layer for lists and recently added files
tty: n_gsm: fix UAF in gsm_cleanup_mux
TIOCSTI: always enable for CAP_SYS_ADMIN
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Reconcile devices.txt with serial/ucc_uart.c regarding device number
assignments. ucc_uart.c supports 4 ports and uses minor devnums
46-49, so update devices.txt with that info.
Then update ucc_uart.c's reference to the location of the devices.txt
list in the kernel source tree.
Fixes: d7584ed2b994 ("[POWERPC] qe-uart: add support for Freescale QUICCEngine UART")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Timur Tabi <timur@kernel.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: linux-serial@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20230724063341.28198-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char driver and Documentation fixes from Greg KH:
"Here is a char driver fix and some documentation updates for 6.5-rc4
that contain the following changes:
- sram/genalloc bugfix for reported problem
- security-bugs.rst update based on recent discussions
- embargoed-hardware-issues minor cleanups and then partial revert
for the project/company lists
All of these have been in linux-next for a while with no reported
problems, and the documentation updates have all been reviewed by the
relevant developers"
* tag 'char-misc-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc/genalloc: Name subpools by of_node_full_name()
Documentation: embargoed-hardware-issues.rst: add AMD to the list
Documentation: embargoed-hardware-issues.rst: clean out empty and unused entries
Documentation: security-bugs.rst: clarify CVE handling
Documentation: security-bugs.rst: update preferences when dealing with the linux-distros group
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Add AMD back to the embargoed-hardware-issues.rst list. There was
confusion about a recent issue that ended up being due to third-party's
misrepresentation, not AMD, so add AMD back to the list to get notified
properly as they understand the proper procedures to follow.
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/2023072514-submersed-yanking-652e@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are a few empty entries in the company/project list, which
confuses people as to why they are there, so remove them entirely, and
also remove an entry that doesn't wish to participate in this process.
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/2023062742-mouse-appease-7917@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The kernel security team does NOT assign CVEs, so document that properly
and provide the "if you want one, ask MITRE for it" response that we
give on a weekly basis in the document, so we don't have to constantly
say it to everyone who asks.
Link: https://lore.kernel.org/r/2023063022-retouch-kerosene-7e4a@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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linux-distros group
Because the linux-distros group forces reporters to release information
about reported bugs, and they impose arbitrary deadlines in having those
bugs fixed despite not actually being kernel developers, the kernel
security team recommends not interacting with them at all as this just
causes confusion and the early-release of reported security problems.
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/2023063020-throat-pantyhose-f110@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- AMD's automatic IBRS doesn't enable cross-thread branch target
injection protection (STIBP) for user processes. Enable STIBP on such
systems.
- Do not delete (but put the ref instead) of AMD MCE error thresholding
sysfs kobjects when destroying them in order not to delete the kernfs
pointer prematurely
- Restore annotation in ret_from_fork_asm() in order to fix kthread
stack unwinding from being marked as unreliable and thus breaking
livepatching
* tag 'x86_urgent_for_v6.5_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled
x86/MCE/AMD: Decrement threshold_bank refcount when removing threshold blocks
x86: Fix kthread unwind
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Unlike Intel's Enhanced IBRS feature, AMD's Automatic IBRS does not
provide protection to processes running at CPL3/user mode, see section
"Extended Feature Enable Register (EFER)" in the APM v2 at
https://bugzilla.kernel.org/attachment.cgi?id=304652
Explicitly enable STIBP to protect against cross-thread CPL3
branch target injections on systems with Automatic IBRS enabled.
Also update the relevant documentation.
Fixes: e7862eda309e ("x86/cpu: Support AMD Automatic IBRS")
Reported-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230720194727.67022-1-kim.phillips@amd.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Work around an erratum on GIC700, where a race between a CPU handling
a wake-up interrupt, a change of affinity, and another CPU going to
sleep can result in a lack of wake-up event on the next interrupt
- Fix the locking required on a VPE for GICv4
- Enable Rockchip 3588001 erratum workaround for RK3588S
- Fix the irq-bcm6345-l1 assumtions of the boot CPU always be the first
CPU in the system
* tag 'irq_urgent_for_v6.5_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3: Workaround for GIC-700 erratum 2941627
irqchip/gic-v3: Enable Rockchip 3588001 erratum workaround for RK3588S
irqchip/gic-v4.1: Properly lock VPEs when doing a directLPI invalidation
irq-bcm6345-l1: Do not assume a fixed block to cpu mapping
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Work around an erratum on GIC700, where a race between a CPU
handling a wake-up interrupt, a change of affinity, and another
CPU going to sleep can result in a lack of wake-up event on the
next interrupt.
- Fix the locking required on a VPE for GICv4
- Enable Rockchip 3588001 erratum workaround for RK3588S
- Fix the irq-bcm6345-l1 assumtions of the boot CPU always be
the first CPU in the system
Link: https://lore.kernel.org/lkml/20230717113857.304919-1-maz@kernel.org
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GIC700 erratum 2941627 may cause GIC-700 missing SPIs wake
requests when SPIs are deactivated while targeting a
sleeping CPU - ie a CPU for which the redistributor:
GICR_WAKER.ProcessorSleep == 1
This runtime situation can happen if an SPI that has been
activated on a core is retargeted to a different core, it
becomes pending and the target core subsequently enters a
power state quiescing the respective redistributor.
When this situation is hit, the de-activation carried out
on the core that activated the SPI (through either ICC_EOIR1_EL1
or ICC_DIR_EL1 register writes) does not trigger a wake
requests for the sleeping GIC redistributor even if the SPI
is pending.
Work around the erratum by de-activating the SPI using the
redistributor GICD_ICACTIVER register if the runtime
conditions require it (ie the IRQ was retargeted between
activation and de-activation).
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230704155034.148262-1-lpieralisi@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton:
"11 hotfixes. Five are cc:stable and the remainder address post-6.4
issues or aren't considered serious enough to justify backporting"
* tag 'mm-hotfixes-stable-2023-07-28-15-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/memory-failure: fix hardware poison check in unpoison_memory()
proc/vmcore: fix signedness bug in read_from_oldmem()
mailmap: update remaining active codeaurora.org email addresses
mm: lock VMA in dup_anon_vma() before setting ->anon_vma
mm: fix memory ordering for mm_lock_seq and vm_lock_seq
scripts/spelling.txt: remove 'thead' as a typo
mm/pagewalk: fix EFI_PGT_DUMP of espfix area
shmem: minor fixes to splice-read implementation
tmpfs: fix Documentation of noswap and huge mount options
Revert "um: Use swap() to make code cleaner"
mm/damon/core-test: initialise context before test in damon_test_set_attrs()
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The noswap mount option is surely not one of the three options for sizing:
move its description down.
The huge= mount option does not accept numeric values: those are just in
an internal enum. Delete those numbers, and follow the manpage text more
closely (but there's not yet any fadvise() or fcntl() which applies here).
/sys/kernel/mm/transparent_hugepage/shmem_enabled is hard to describe, and
barely relevant to mounting a tmpfs: just refer to transhuge.rst (while
still using the words deny and force, to help as informal reminders).
[rdunlap@infradead.org: fixup Docs table for huge mount options]
Link: https://lkml.kernel.org/r/20230725052333.26857-1-rdunlap@infradead.org
Link: https://lkml.kernel.org/r/986cb0bf-9780-354-9bb-4bf57aadbab@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: d0f5a85442d1 ("shmem: update documentation")
Fixes: 2c6efe9cf2d7 ("shmem: add support to ignore swap")
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- A fix for a performance problem in QubesOS, adding a way to drain the
queue of grants experiencing delayed unmaps faster
- A patch enabling the use of static event channels from user mode,
which was omitted when introducing supporting static event channels
- A fix for a problem where Xen related code didn't check properly for
running in a Xen environment, resulting in a WARN splat
* tag 'for-linus-6.5a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: speed up grant-table reclaim
xen/evtchn: Introduce new IOCTL to bind static evtchn
xenbus: check xen_domain in xenbus_probe_initcall
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When a grant entry is still in use by the remote domain, Linux must put
it on a deferred list. Normally, this list is very short, because
the PV network and block protocols expect the backend to unmap the grant
first. However, Qubes OS's GUI protocol is subject to the constraints
of the X Window System, and as such winds up with the frontend unmapping
the window first. As a result, the list can grow very large, resulting
in a massive memory leak and eventual VM freeze.
To partially solve this problem, make the number of entries that the VM
will attempt to free at each iteration tunable. The default is still
10, but it can be overridden via a module parameter.
This is Cc: stable because (when combined with appropriate userspace
changes) it fixes a severe performance and stability problem for Qubes
OS users.
Cc: stable@vger.kernel.org
Signed-off-by: Demi Marie Obenour <demi@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230726165354.1252-1-demi@invisiblethingslab.com
Signed-off-by: Juergen Gross <jgross@suse.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from can, netfilter.
Current release - regressions:
- core: fix splice_to_socket() for O_NONBLOCK socket
- af_unix: fix fortify_panic() in unix_bind_bsd().
- can: raw: fix lockdep issue in raw_release()
Previous releases - regressions:
- tcp: reduce chance of collisions in inet6_hashfn().
- netfilter: skip immediate deactivate in _PREPARE_ERROR
- tipc: stop tipc crypto on failure in tipc_node_create
- eth: igc: fix kernel panic during ndo_tx_timeout callback
- eth: iavf: fix potential deadlock on allocation failure
Previous releases - always broken:
- ipv6: fix bug where deleting a mngtmpaddr can create a new
temporary address
- eth: ice: fix memory management in ice_ethtool_fdir.c
- eth: hns3: fix the imp capability bit cannot exceed 32 bits issue
- eth: vxlan: calculate correct header length for GPE
- eth: stmmac: apply redundant write work around on 4.xx too"
* tag 'net-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (49 commits)
tipc: stop tipc crypto on failure in tipc_node_create
af_unix: Terminate sun_path when bind()ing pathname socket.
tipc: check return value of pskb_trim()
benet: fix return value check in be_lancer_xmit_workarounds()
virtio-net: fix race between set queues and probe
net/sched: mqprio: Add length check for TCA_MQPRIO_{MAX/MIN}_RATE64
splice, net: Fix splice_to_socket() for O_NONBLOCK socket
net: fec: tx processing does not call XDP APIs if budget is 0
mptcp: more accurate NL event generation
selftests: mptcp: join: only check for ip6tables if needed
tools: ynl-gen: fix parse multi-attr enum attribute
tools: ynl-gen: fix enum index in _decode_enum(..)
netfilter: nf_tables: disallow rule addition to bound chain via NFTA_RULE_CHAIN_ID
netfilter: nf_tables: skip immediate deactivate in _PREPARE_ERROR
netfilter: nft_set_rbtree: fix overlap expiration walk
igc: Fix Kernel Panic during ndo_tx_timeout callback
net: dsa: qca8k: fix mdb add/del case with 0 VID
net: dsa: qca8k: fix broken search_and_del
net: dsa: qca8k: fix search_and_insert wrong handling of new rule
net: dsa: qca8k: enable use_single_write for qca8xxx
...
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page pool and XDP should not be accessed from IRQ context
which may happen if drivers try to clean up XDP TX with
NAPI budget of 0.
Link: https://lore.kernel.org/r/20230720161323.2025379-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix moortec,mr75203 schema usage of 'multipleOf' keyword
- Fix regression in systems depending on "of-display" device name
- Build fix for s390 with CONFIG_PCI=n and OF_EARLY_FLATTREE=y
- Drop two obsolete serial .txt bindings
* tag 'devicetree-fixes-for-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: serial: Remove obsolete nxp,lpc1850-uart.txt
dt-bindings: serial: Remove obsolete cavium-uart.txt
dt-bindings: hwmon: moortec,mr75203: fix multipleOf for coefficients
of: Preserve "of-display" device name for compatibility
of: make OF_EARLY_FLATTREE depend on HAS_IOMEM
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nxp,lpc1850-uart.txt binding is already covered by 8250.yaml, so remove
it.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230707221607.1064888-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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cavium-uart.txt binding is already covered by 8250.yaml, so remove it.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230707221602.1063972-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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Few coefficients use default values multiple of 100, not 1000 (in the
example DTS and in the Linux driver):
moortec,mr75203.example.dtb: pvt@e0680000: moortec,ts-coeff-g:0:0: 61400 is not a multiple of 1000
Fixes: bf1fdafdbc61 ("dt-bindings: hwmon: (mr75203) add coefficient properties for the thermal equation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230712081124.110345-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
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Get a similar baseline to my other branches, and fixes for people using
the branch.
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a bunch of small driver fixes and a larger rework of zone disk
handling (which reaches into blk and nvme).
The aacraid array-bounds fix is now critical since the security people
turned on -Werror for some build tests, which now fail without it"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: storvsc: Handle SRB status value 0x30
scsi: block: Improve checks in blk_revalidate_disk_zones()
scsi: block: virtio_blk: Set zone limits before revalidating zones
scsi: block: nullblk: Set zone limits before revalidating zones
scsi: nvme: zns: Set zone limits before revalidating zones
scsi: sd_zbc: Set zone limits before revalidating zones
scsi: ufs: core: Add support for qTimestamp attribute
scsi: aacraid: Avoid -Warray-bounds warning
scsi: ufs: ufs-mediatek: Add dependency for RESET_CONTROLLER
scsi: ufs: core: Update contact email for monitor sysfs nodes
scsi: scsi_debug: Remove dead code
scsi: qla2xxx: Use vmalloc_array() and vcalloc()
scsi: fnic: Use vmalloc_array() and vcalloc()
scsi: qla2xxx: Fix error code in qla2x00_start_sp()
scsi: qla2xxx: Silence a static checker warning
scsi: lpfc: Fix a possible data race in lpfc_unregister_fcf_rescan()
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Pull in the currently staged SCSI fixes for 6.5.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Update contact email addresses for Can Guo and Asutosh Das, replace Subhash
Jadavani's contact.
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Link: https://lore.kernel.org/r/20230630003913.3713155-1-quic_cang@quicinc.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- fix a formatting error in the hwprobe documentation
- fix a spurious warning in the RISC-V PMU driver
- fix memory detection on rv32 (problem does not manifest on any known
system)
- avoid parsing legacy parsing of I in ACPI ISA strings
* tag 'riscv-for-linus-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Don't include Zicsr or Zifencei in I from ACPI
riscv: mm: fix truncation warning on RV32
perf: RISC-V: Remove PERF_HES_STOPPED flag checking in riscv_pmu_start()
Documentation: RISC-V: hwprobe: Fix a formatting error
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I'm not sure what I was trying to do with the ':'s, but they're just
rendered to HTML which looks odd. This makes "fence.i" look like
"mvendorid" and such, which is seems reasonable to me.
Reviewed-by: Evan Green <evan@rivosinc.com>
Link: https://lore.kernel.org/r/20230710193329.2742-1-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter, wireless and ebpf.
Current release - regressions:
- netfilter: conntrack: gre: don't set assured flag for clash entries
- wifi: iwlwifi: remove 'use_tfh' config to fix crash
Previous releases - regressions:
- ipv6: fix a potential refcount underflow for idev
- icmp6: ifix null-ptr-deref of ip6_null_entry->rt6i_idev in
icmp6_dev()
- bpf: fix max stack depth check for async callbacks
- eth: mlx5e:
- check for NOT_READY flag state after locking
- fix page_pool page fragment tracking for XDP
- eth: igc:
- fix tx hang issue when QBV gate is closed
- fix corner cases for TSN offload
- eth: octeontx2-af: Move validation of ptp pointer before its usage
- eth: ena: fix shift-out-of-bounds in exponential backoff
Previous releases - always broken:
- core: prevent skb corruption on frag list segmentation
- sched:
- cls_fw: fix improper refcount update leads to use-after-free
- sch_qfq: account for stab overhead in qfq_enqueue
- netfilter:
- report use refcount overflow
- prevent OOB access in nft_byteorder_eval
- wifi: mt7921e: fix init command fail with enabled device
- eth: ocelot: fix oversize frame dropping for preemptible TCs
- eth: fec: recycle pages for transmitted XDP frames"
* tag 'net-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (79 commits)
selftests: tc-testing: add test for qfq with stab overhead
net/sched: sch_qfq: account for stab overhead in qfq_enqueue
selftests: tc-testing: add tests for qfq mtu sanity check
net/sched: sch_qfq: reintroduce lmax bound check for MTU
wifi: cfg80211: fix receiving mesh packets without RFC1042 header
wifi: rtw89: debug: fix error code in rtw89_debug_priv_send_h2c_set()
net: txgbe: fix eeprom calculation error
net/sched: make psched_mtu() RTNL-less safe
net: ena: fix shift-out-of-bounds in exponential backoff
netdevsim: fix uninitialized data in nsim_dev_trap_fa_cookie_write()
net/sched: flower: Ensure both minimum and maximum ports are specified
MAINTAINERS: Add another mailing list for QUALCOMM ETHQOS ETHERNET DRIVER
docs: netdev: update the URL of the status page
wifi: iwlwifi: remove 'use_tfh' config to fix crash
xdp: use trusted arguments in XDP hints kfuncs
bpf: cpumap: Fix memory leak in cpu_map_update_elem
wifi: airo: avoid uninitialized warning in airo_get_rate()
octeontx2-pf: Add additional check for MCAM rules
net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
net: fec: use netdev_err_once() instead of netdev_err()
...
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Move the status page from vger to the same server as mailbot.
Link: https://lore.kernel.org/r/20230710174636.1174684-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
"Misc small fixes and hw-id additions"
* tag 'platform-drivers-x86-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: touchscreen_dmi: Add info for the Archos 101 Cesium Educ tablet
platform/x86: dell-ddv: Fix mangled list in documentation
platform/x86: dell-ddv: Improve error handling
platform/x86/amd: pmf: Add new ACPI ID AMDI0103
platform/x86/amd: pmc: Add new ACPI ID AMDI000A
platform/x86/amd: pmc: Apply nvme quirk to HP 15s-eq2xxx
platform/x86: Move s2idle quirk from thinkpad-acpi to amd-pmc
platform/x86: int3472/discrete: set variable skl_int3472_regulator_second_sensor storage-class-specifier to static
platform/x86/intel/tpmi: Prevent overflow for cap_offset
platform/x86: wmi: Replace open coded guid_parse_and_compare()
platform/x86: wmi: Break possible infinite loop when parsing GUID
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