On 2024/6/25 0:33, Jiaqi Yan wrote:
> Logs from soft_offline_page and soft_offline_in_use_page have
> different formats than majority of the memory failure code:
>
> "Memory failure: 0x${pfn}: ${lower_case_message}"
>
> Convert them to the following format:
>
> "Soft offline: 0x${pfn}: ${low
From: Geliang Tang
Use local helper make_client() instead of using make_socket() and
connect(). Then make_socket() and inetaddr_len() can be dropped now.
Signed-off-by: Geliang Tang
---
.../selftests/bpf/prog_tests/sk_lookup.c | 45 +--
1 file changed, 2 insertions(+), 43
From: Geliang Tang
Use public network helpers make_sockaddr() and connect_to_addr() instead
of using the local defined function make_socket() and connect().
This make_socket() can be dropped latter.
Signed-off-by: Geliang Tang
---
.../selftests/bpf/prog_tests/sk_lookup.c | 20 +++
From: Geliang Tang
This patch uses public helper connect_to_fd() exported in network_helpers.h
instead of using make_socket() and connect() in prog_tests/sk_lookup.c.
This can simplify the code.
Signed-off-by: Geliang Tang
---
.../testing/selftests/bpf/prog_tests/sk_lookup.c | 16 ++---
From: Geliang Tang
This patch uses public helper start_server_addr() instead of local
defined function make_server() in prog_tests/sk_lookup.c to avoid
duplicate code.
Add a helper setsockopts() to set SOL_CUSTOM sockopt looply, set
it to setsockopt pointer of struct network_helper_opts, and pas
From: Geliang Tang
Server 1 fd should be closed in the error path when update_lookup_map()
fails. This patch fixes it by goto "close_srv1" instead of "detach"
lable in that case.
Acked-by: Eduard Zingerman
Signed-off-by: Geliang Tang
---
tools/testing/selftests/bpf/prog_tests/sk_lookup.c | 2
From: Geliang Tang
This patch uses public helper make_sockaddr() exported in network_helpers.h
instead of open-coding in sockmap_ktls.c. This can avoid duplicate code.
Acked-by: Eduard Zingerman
Signed-off-by: Geliang Tang
---
.../selftests/bpf/prog_tests/sockmap_ktls.c | 16 ++--
From: Geliang Tang
Use public network helper connect_to_fd() instead of open-coding it in
prog_tests/sockmap_ktls.c. This can avoid duplicate code.
Acked-by: Eduard Zingerman
Signed-off-by: Geliang Tang
---
.../selftests/bpf/prog_tests/sockmap_ktls.c| 14 ++
1 file changed
From: Geliang Tang
Include network_helpers.h in prog_tests/sockmap_ktls.c, use public network
helper start_server_str() instead of local defined function tcp_server().
This can avoid duplicate code.
Technically, this is not a one-for-one replacement, as start_server_str()
also does bind(). But t
From: Geliang Tang
Some callers expect __start_server() helper to pass their own "backlog"
value to listen() instead of the default of 1. So this patch adds struct
member "backlog" for network_helper_opts to allow callers to set "backlog"
value via start_server_str() helper.
Signed-off-by: Gelia
From: Geliang Tang
v5:
- keep make_server and make_client as Eduard suggested.
v4:
- a new patch to use make_sockaddr in sockmap_ktls.
- a new patch to close fd in error path in drop_on_reuseport.
- drop make_server() in patch 7.
- drop make_client() too in patch 9.
v3:
- a new patch to a
ncdevmem is a devmem TCP netcat. It works similarly to netcat, but it
sends and receives data using the devmem TCP APIs. It uses udmabuf as
the dmabuf provider. It is compatible with a regular netcat running on
a peer, or a ncdevmem running on a peer.
In addition to normal netcat support, ncdevmem
Add documentation outlining the usage and details of devmem TCP.
Signed-off-by: Mina Almasry
Reviewed-by: Bagas Sanjaya
---
v9:
https://lore.kernel.org/netdev/20240403002053.2376017-14-almasrym...@google.com/
- Bagas doc suggestions.
v8:
- Applied docs suggestions (Randy). Thanks!
v7:
- App
Add an interface for the user to notify the kernel that it is done
reading the devmem dmabuf frags returned as cmsg. The kernel will
drop the reference on the frags to make them available for reuse.
Signed-off-by: Willem de Bruijn
Signed-off-by: Kaiyuan Zhang
Signed-off-by: Mina Almasry
---
v
In tcp_recvmsg_locked(), detect if the skb being received by the user
is a devmem skb. In this case - if the user provided the MSG_SOCK_DEVMEM
flag - pass it to tcp_recvmsg_devmem() for custom handling.
tcp_recvmsg_devmem() copies any data in the skb header to the linear
buffer, and returns a cmsg
For device memory TCP, we expect the skb headers to be available in host
memory for access, and we expect the skb frags to be in device memory
and unaccessible to the host. We expect there to be no mixing and
matching of device memory frags (unaccessible) with host memory frags
(accessible) in the
Make skb_frag_page() fail in the case where the frag is not backed
by a page, and fix its relevant callers to handle this case.
Signed-off-by: Mina Almasry
---
v10:
- Fixed newly generated kdoc warnings found by patchwork. While we're
at it, fix the Return section of the functions I touched.
Implement a memory provider that allocates dmabuf devmem in the form of
net_iov.
The provider receives a reference to the struct netdev_dmabuf_binding
via the pool->mp_priv pointer. The driver needs to set this pointer for
the provider in the net_iov.
The provider obtains a reference on the netde
Convert netmem to be a union of struct page and struct netmem. Overload
the LSB of struct netmem* to indicate that it's a net_iov, otherwise
it's a page.
Currently these entries in struct page are rented by the page_pool and
used exclusively by the net stack:
struct {
unsigned long pp_mag
Abstract the memory type from the page_pool so we can later add support
for new memory types. Convert the page_pool to use the new netmem type
abstraction, rather than use struct page directly.
As of this patch the netmem type is a no-op abstraction: it's always a
struct page underneath. All the p
Implement netdev devmem allocator. The allocator takes a given struct
netdev_dmabuf_binding as input and allocates net_iov from that
binding.
The allocation simply delegates to the binding's genpool for the
allocation logic and wraps the returned memory region in a net_iov
struct.
Signed-off-by:
Add a netdev_dmabuf_binding struct which represents the
dma-buf-to-netdevice binding. The netlink API will bind the dma-buf to
rx queues on the netdevice. On the binding, the dma_buf_attach
& dma_buf_map_attachment will occur. The entries in the sg_table from
mapping will be inserted into a genpool
API takes the dma-buf fd as input, and binds it to the netdevice. The
user can specify the rx queues to bind the dma-buf to.
Suggested-by: Stanislav Fomichev
Signed-off-by: Mina Almasry
---
v7:
- Use flags: [ admin-perm ] instead of a CAP_NET_ADMIN check.
Changes in v1:
- Add rx-queue-type to
Add netdev_rx_queue_restart() function to netdev_rx_queue.h
Signed-off-by: David Wei
Signed-off-by: Mina Almasry
Reviewed-by: Pavel Begunkov
---
v13:
- Add reviewed-by from Pavel (thanks!)
- Fixed comment (Pavel)
v11:
- Fix not checking dev->queue_mgmt_ops (Pavel).
- Fix ndo_queue_mem_free c
v13:
https://patchwork.kernel.org/project/netdevbpf/list/?series=861406&archive=both&state=*
Major changes:
--
This iteration addresses Pavel's review comments, applies his
reviewed-by's, and seeks to fix the patchwork build error (sorry!).
As usual, the full devmem TCP changes
On Mon, 2024-06-24 at 12:33 +0800, Geliang Tang wrote:
> From: Geliang Tang
>
> In order to facilitate subsequent commits to drop make_server(), this patch
> invokes attach_reuseport() out of make_server(), right after invoking
> make_server() if the passed "reuseport_prog" argument is not NULL.
On Mon, 24 Jun 2024 13:55:39 +0800 Yujie Liu wrote:
> It seems that there is no definition for config IP_GRE, and it is not a
> dependency of other configs, so remove it.
>
> linux$ find -name Kconfig | xargs grep "IP_GRE"
> <-- nothing
>
> There is a IPV6_GRE config defined in net/ipv6/Kconfig.
lib.mk CFLAGS provides -D_GNU_SOURCE= which is needed to compile the
host files.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/sgx/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/sgx/Makefile
b/tools/testing/selftests/sgx/Makefile
in
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/riscv/mm/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/riscv/mm/Mak
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/ring-buffer/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/tools/testing/selftests/ring-buffer/Makefile
b/to
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/resctrl/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/resctrl/Makef
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/proc/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/tools/testing/selftests/proc/Makefile
b/tools/testing/se
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/kvm/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/kvm/Makefile
b/t
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/iommu/Makefile | 2 --
1 file changed, 2 deletions(-)
diff --git a/tools/testing/selftests/iommu/Makefile
b/tools/testin
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/intel_pstate/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/intel_ps
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/futex/functional/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/fute
-D_GNU_SOURCE= will be provided by lib.mk CFLAGS, so -D_GNU_SOURCE
should be dropped to prevent redefinition warnings.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/exec/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/tools/testing/selftests/exec/Makefile
b/tools/testing/se
Instead of overwriting the CFLAGS imported from lib.mk, append instead
instead. Also drop -D_GNU_SOURCE from CFLAGS to prevent redefinition
warning.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/net/Makefile| 2 +-
tools/testing/selftests/net/tcp_ao/Makefile | 2 +-
2 files cha
Centralizes the _GNU_SOURCE definition to CFLAGS in lib.mk.
This uses the form "-D_GNU_SOURCE=", which is equivalent to
"#define _GNU_SOURCE".
Otherwise using "-D_GNU_SOURCE" is equivalent to "-D_GNU_SOURCE=1" and
"#define _GNU_SOURCE 1", which is less commonly seen in source code and
would requi
Use the more common "#define _GNU_SOURCE" instead of defining it to 1.
This will prevent redefinition warnings when -D_GNU_SOURCE= is set.
Signed-off-by: Edward Liaw
---
tools/testing/selftests/mm/thuge-gen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selft
Centralizes the definition of _GNU_SOURCE into lib.mk and addresses all
resulting macro redefinition warnings.
These patches will need to be merged in one shot to avoid redefinition
warnings.
The initial attempt at this patch was abandoned because it affected
lines in many source files and caused
On Sun, 23 Jun 2024 11:26:37 -0400 Peter Xu wrote:
> > > Fixes: e06f1e1dd499 ("userfaultfd: wp: enabled write protection in
> > > userfaultfd API")
> >
> > A userspace-triggerable WARN is bad. I added cc:stable to this.
>
> Andrew,
>
> Note that this change may fix a WARN, but it may also st
On Mon, 24 Jun 2024 12:53:45 -0400 Aaron Conole wrote:
> Additionally, the "Cannot find device ..." text comes from an iproute2
> utility output. The only place we actually interact with that is via
> the call at pmtu.sh:973:
>
> run_cmd ip link set ovs_br0 up
>
> Maybe it is possible that
On Mon, 24 Jun 2024, Sean Christopherson wrote:
> On Fri, Jun 21, 2024, Elliot Berman wrote:
> > On Fri, Jun 21, 2024 at 11:16:31AM +0100, Fuad Tabba wrote:
> > > On Fri, Jun 21, 2024 at 10:10 AM David Hildenbrand
> > > wrote:
> > > > On 21.06.24 10:54, Fuad Tabba wrote:
> > > > > On Fri, Jun 21
On Mon, 2024-06-24 at 12:33 +0800, Geliang Tang wrote:
> From: Geliang Tang
>
> Server 1 fd should be closed in the error path when update_lookup_map()
> fails. This patch fixes it by goto "close_srv1" instead of "detach"
> lable in that case.
>
> Signed-off-by: Geliang Tang
> ---
Acked-by: Ed
On Mon, 2024-06-24 at 12:33 +0800, Geliang Tang wrote:
> From: Geliang Tang
>
> This patch uses public helper make_sockaddr() exported in network_helpers.h
> instead of open-coding in sockmap_ktls.c. This can avoid duplicate code.
>
> Signed-off-by: Geliang Tang
> ---
Acked-by: Eduard Zingerma
On Wed, Jun 19, 2024 at 4:41 AM Clément Léger wrote:
>
> Export Zcmop ISA extension through hwprobe.
>
> Signed-off-by: Clément Léger
Reviewed-by: Evan Green
On Mon, 2024-06-24 at 21:27 +0800, Geliang Tang wrote:
[...]
> diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
> b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
> index bceff5900016..8c0306f344e9 100644
> --- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
> +++ b/to
On Fri, Jun 21, 2024, Elliot Berman wrote:
> On Fri, Jun 21, 2024 at 11:16:31AM +0100, Fuad Tabba wrote:
> > On Fri, Jun 21, 2024 at 10:10 AM David Hildenbrand wrote:
> > > On 21.06.24 10:54, Fuad Tabba wrote:
> > > > On Fri, Jun 21, 2024 at 9:44 AM David Hildenbrand
> > > > wrote:
> > > >>
> >
Aaron Conole writes:
> Jakub Kicinski writes:
>
>> On Thu, 20 Jun 2024 08:55:54 -0400 Aaron Conole wrote:
>>> This series enhances the ovs-dpctl utility to provide support for set()
>>> and tunnel() flow specifiers, better ipv6 handling support, and the
>>> ability to add tunnel vports, and LWT
Add the documentation for soft offline behaviors / costs, and what
the new enable_soft_offline sysctl is for.
Acked-by: Oscar Salvador
Signed-off-by: Jiaqi Yan
---
Documentation/admin-guide/sysctl/vm.rst | 32 +
1 file changed, 32 insertions(+)
diff --git a/Documentati
Add regression and new tests when hugepage has correctable memory
errors, and how userspace wants to deal with it:
* if enable_soft_offline=1, mapped hugepage is soft offlined
* if enable_soft_offline=0, mapped hugepage is intact
Free hugepages case is not explicitly covered by the tests.
Hugepag
Correctable memory errors are very common on servers with large
amount of memory, and are corrected by ECC. Soft offline is kernel's
additional recovery handling for memory pages having (excessive)
corrected memory errors. Impacted page is migrated to a healthy page
if inuse; the original page is d
Logs from soft_offline_page and soft_offline_in_use_page have
different formats than majority of the memory failure code:
"Memory failure: 0x${pfn}: ${lower_case_message}"
Convert them to the following format:
"Soft offline: 0x${pfn}: ${lower_case_message}"
No functional change in this comm
Correctable memory errors are very common on servers with large
amount of memory, and are corrected by ECC, but with two
pain points to users:
1. Correction usually happens on the fly and adds latency overhead
2. Not-fully-proved theory states excessive correctable memory
errors can develop into
On Sun, Jun 23, 2024 at 8:41 PM Miaohe Lin wrote:
>
> On 2024/6/21 2:48, Jiaqi Yan wrote:
> > Correctable memory errors are very common on servers with large
> ...
> >
> > /*
> > @@ -2749,8 +2760,9 @@ static int soft_offline_in_use_page(struct page *page)
> > * @pfn: pfn to soft-offline
> > *
On 6/21/24 23:08, Shuah Khan wrote:
> On 6/18/24 07:40, Laura Nao wrote:
>> Hi Shuah,
>>
>> On 6/7/24 23:07, Shuah Khan wrote:
>>> On 6/7/24 03:53, Laura Nao wrote:
Hi Shuah,
On 6/7/24 01:03, Shuah Khan wrote:
> On 6/6/24 03:57, Laura Nao wrote:
>> Hi Shuah,
>>
>> On
On Mon, Jun 24, 2024 at 09:53:57AM -0400, Audra Mitchell wrote:
> On Fri, Jun 21, 2024 at 05:27:43PM -0400, Peter Xu wrote:
> > On Fri, Jun 21, 2024 at 02:12:24PM -0400, Audra Mitchell wrote:
> > > If CONFIG_PTE_MARKER_UFFD_WP is disabled, then testing with test_uffdio_up
> >
> > Here you're talki
On Mon, Jun 24, 2024 at 3:28 PM Geliang Tang wrote:
>
> From: Geliang Tang
>
> Run the following BPF selftests on loongarch:
>
> # ./test_progs -t sockmap_basic
>
> A Kernel panic occurs:
>
> '''
> Oops[#1]:
> CPU: 22 PID: 2824 Comm: test_progs Tainted: G OE 6.10.0-rc2+
> #18
>
On Fri, Jun 21, 2024 at 05:27:43PM -0400, Peter Xu wrote:
> On Fri, Jun 21, 2024 at 02:12:24PM -0400, Audra Mitchell wrote:
> > If CONFIG_PTE_MARKER_UFFD_WP is disabled, then testing with test_uffdio_up
>
> Here you're talking about pte markers, then..
>
> > enables calling uffdio_regsiter with t
On Mon, Jun 24, 2024 at 3:28 PM Geliang Tang wrote:
>
> From: Geliang Tang
>
> Run the following BPF selftests on loongarch:
>
> # ./test_progs -t sockmap_listen
>
> A Kernel panic occurs:
>
> '''
> Oops[#1]:
> CPU: 49 PID: 233429 Comm: new_name Tainted: G OE 6.10.0-rc2+
> #20
>
From: Geliang Tang
Run BPF selftests bpf_tcp_ca on loongarch:
# ./test_progs -t bpf_tcp_ca
A "Segmentation fault" error occurs:
'''
test_dctcp:PASS:bpf_dctcp__open_and_load 0 nsec
test_dctcp:FAIL:bpf_map__attach_struct_ops unexpected error: -524
#29/1bpf_tcp_ca/dctcp:FAIL
test_cubic:PA
From: Geliang Tang
Run the following BPF selftests on loongarch:
# ./test_progs -t sockmap_listen
A Kernel panic occurs:
'''
Oops[#1]:
CPU: 49 PID: 233429 Comm: new_name Tainted: G OE 6.10.0-rc2+ #20
Hardware name: LOONGSON Dabieshan/Loongson-TC542F0, BIOS
Loongson-UDK2018-V
From: Geliang Tang
Run the following BPF selftests on loongarch:
# ./test_progs -t sockmap_basic
A Kernel panic occurs:
'''
Oops[#1]:
CPU: 22 PID: 2824 Comm: test_progs Tainted: G OE 6.10.0-rc2+ #18
Hardware name: LOONGSON Dabieshan/Loongson-TC542F0, BIOS
Loongson-UDK2018-V4
From: Geliang Tang
When I ran BPF selftests on loongarch recently, some errors occur. Fix
them in this set.
Geliang Tang (3):
skmsg: null check for page in sk_msg_recvmsg
inet: null check for close in inet_release
selftests/bpf: Null checks for link in bpf_tcp_ca
net/core/skmsg.c
On Mon, Jun 24, 2024 at 10:24:51AM +0200, Clément Léger wrote:
>
>
> On 23/06/2024 17:42, Conor Dooley wrote:
> > On Wed, Jun 19, 2024 at 01:35:18PM +0200, Clément Léger wrote:
> >> The Zc* standard extension for code reduction introduces new extensions.
> >> This patch adds support for Zca, Zcf,
From: Emanuele Ghidoli
There are two types of alarm tests: one that tests alarms on minute boundaries
and another that tests alarms on second boundaries. For RTCs with one-minute
resolution, only the minute boundary test should be run. Skip the second
boundary
alarm test for these RTCs.
Signed-
From: Emanuele Ghidoli
Set one-minute alarm resolution for the rx_8130 by setting the
RTC_FEATURE_ALARM_RES_MINUTE flag according to the hw capabilities.
Additionally, set the no_upd_irq flag to disable update interrupts,
as it is not possible to generate update IRQs.
hwclock fails reading the d
From: Emanuele Ghidoli
Hi,
I am submitting two patches related to the RX8310 RTC configuration:
1. **Correct RX8310 RTC Features Configuration:**
- Sets one-minute alarm resolution.
- Disables update IRQ.
Without this patch, if the interrupt is configured in the device tree,
`hwcl
On Jun 21 2024, Alexei Starovoitov wrote:
> On Fri, Jun 21, 2024 at 9:08 AM Benjamin Tissoires wrote:
> >
> > On Jun 21 2024, Alexei Starovoitov wrote:
> > > On Fri, Jun 21, 2024 at 1:56 AM Benjamin Tissoires
> > > wrote:
> > > >
> > > > Same story than hid_hw_raw_requests:
> > > >
> > > > This
On 23/06/2024 17:42, Conor Dooley wrote:
> On Wed, Jun 19, 2024 at 01:35:18PM +0200, Clément Léger wrote:
>> The Zc* standard extension for code reduction introduces new extensions.
>> This patch adds support for Zca, Zcf, Zcd and Zcb. Zce, Zcmt and Zcmp
>> are left out of this patch since they
On Mon, Jun 24, 2024 at 7:01 PM Huang, Ying wrote:
>
> Barry Song <21cn...@gmail.com> writes:
>
> > On Mon, Jun 24, 2024 at 3:44 PM Huang, Ying wrote:
> >>
> >> Barry Song <21cn...@gmail.com> writes:
> >>
> >> > On Fri, Jun 21, 2024 at 9:24 PM Huang, Ying wrote:
> >> >>
> >> >> Barry Song <21cn.
Since the memfd pages associated with a udmabuf may be migrated
as part of udmabuf create, we need to verify the data coherency
after successful migration. The new tests added in this patch try
to do just that using 4k sized pages and also 2 MB sized huge
pages for the memfd.
Successful completion
Barry Song <21cn...@gmail.com> writes:
> On Mon, Jun 24, 2024 at 3:44 PM Huang, Ying wrote:
>>
>> Barry Song <21cn...@gmail.com> writes:
>>
>> > On Fri, Jun 21, 2024 at 9:24 PM Huang, Ying wrote:
>> >>
>> >> Barry Song <21cn...@gmail.com> writes:
>> >>
>> >> > On Fri, Jun 21, 2024 at 7:25 PM Rya
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