This introduces signal->exec_bprm, which is used to
fix the case when at least one of the sibling threads
is traced, and therefore the trace process may dead-lock
in ptrace_attach, but de_thread will need to wait for the
tracer to continue execution.
The solution is to detect this situation and
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,
Add an interface for the user to notify the kernel that it is done
reading the NET_RX dmabuf pages returned as cmsg. The kernel will
drop the reference on the NET_RX pages to make them available for
re-use.
Signed-off-by: Willem de Bruijn
Signed-off-by: Kaiyuan Zhang
Signed-off-by: Mina Almasry
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
Make skb_frag_page() fail in the case where the frag is not backed
by a page, and fix its relevent callers to handle this case.
Correctly handle skb_frag refcounting in the page_pool_iovs case.
Signed-off-by: Mina Almasry
---
include/linux/skbuff.h | 42
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
Implement a memory provider that allocates dmabuf devmem page_pool_iovs.
Support of PP_FLAG_DMA_MAP and PP_FLAG_DMA_SYNC_DEV is omitted for
simplicity.
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
Overload the LSB of struct page* to indicate that it's a page_pool_iov.
Refactor mm calls on struct page* into helpers, and add page_pool_iov
handling on those helpers. Modify callers of these mm APIs with calls to
these helpers instead.
In areas where struct page* is dereferenced, add a check
Implement netdev devmem allocator. The allocator takes a given struct
netdev_dmabuf_binding as input and allocates page_pool_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 page_pool_iov
struct.
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
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
---
Changes in v3:
- Support binding multiple rx rx-queues
---
Documentation/netlink/specs/netdev.yaml |
From: Jakub Kicinski
The page providers which try to reuse the same pages will
need to hold onto the ref, even if page gets released from
the pool - as in releasing the page from the pp just transfers
the "ownership" reference from pp to the provider, and provider
will wait for other references
From: Jakub Kicinski
Releasing the DMA mapping will be useful for other types
of pages, so factor it out. Make sure compiler inlines it,
to avoid any regressions.
Signed-off-by: Jakub Kicinski
Signed-off-by: Mina Almasry
---
This is implemented by Jakub in his RFC:
Changes in RFC v3:
--
1. Pulled in the memory-provider dependency from Jakub's RFC[1] to make the
series reviewable and mergable.
2. Implemented multi-rx-queue binding which was a todo in v2.
3. Fix to cmsg handling.
The sticking point in RFC v2[2] was the device reset
On 05.11.23 21:33, Benno Lossin wrote:
> On 05.11.23 19:40, Sergio González Collado wrote:
>> The longest length of a symbol (KSYM_NAME_LEN) was increased to 512
>> in the reference [1]. This patch adds a kunit test to check the longest
>> symbol length.
>>
>> [1]
On 05.11.23 19:40, Sergio González Collado wrote:
> The longest length of a symbol (KSYM_NAME_LEN) was increased to 512
> in the reference [1]. This patch adds a kunit test to check the longest
> symbol length.
>
> [1] https://lore.kernel.org/lkml/20220802015052.10452-6-oj...@kernel.org/
>
>
On 11/5/23 15:40, Sergio González Collado wrote:
The longest length of a symbol (KSYM_NAME_LEN) was increased to 512
in the reference [1]. This patch adds a kunit test to check the longest
symbol length.
[1] https://lore.kernel.org/lkml/20220802015052.10452-6-oj...@kernel.org/
Signed-off-by:
The longest length of a symbol (KSYM_NAME_LEN) was increased to 512
in the reference [1]. This patch adds a kunit test to check the longest
symbol length.
[1] https://lore.kernel.org/lkml/20220802015052.10452-6-oj...@kernel.org/
Signed-off-by: Sergio González Collado
---
lib/Kconfig.debug
On 2023-11-05 15:27:00+0100, Willy Tarreau wrote:
> On Sun, Nov 05, 2023 at 03:22:30PM +0100, Thomas Weißschuh wrote:
> > Center-align all possible status reports.
> > Before OK and FAIL were center-aligned in relation to each other but
> > SKIPPED and FAILED would be left-aligned.
> >
> >
On Sun, Nov 05, 2023 at 03:22:30PM +0100, Thomas Weißschuh wrote:
> Center-align all possible status reports.
> Before OK and FAIL were center-aligned in relation to each other but
> SKIPPED and FAILED would be left-aligned.
>
> Before:
>
> 7 environ_addr = <0x7fffef3e7c50>
msg = " [OK]";
else if (r == SKIPPED)
msg = "[SKIPPED]";
else
- msg = "[FAIL]";
+ msg = " [FAIL]";
if (llen < 64)
putcharn(' ', 64 - llen);
---
base-commit: 6de6466e41182875252fe09
Allow testing MIPS O32 big endian.
Signed-off-by: Thomas Weißschuh
Acked-by: Willy Tarreau
---
tools/testing/selftests/nolibc/Makefile | 7 +++
tools/testing/selftests/nolibc/run-tests.sh | 2 +-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git
MIPS has many different configurations prepare the support of additional
ones by moving the build of MIPS to the generic XARCH infrastructure.
Signed-off-by: Thomas Weißschuh
Acked-by: Willy Tarreau
---
tools/testing/selftests/nolibc/Makefile | 12 +++-
When an architecture is unsupported arch.h would silently continue.
This leads to a lot of followup errors because my_syscallX() is not
defined and the startup code is missing.
Avoid these confusing errors and fail the build early with a clear
error message and location.
Signed-off-by: Thomas
Two bugfixes and some minor refactorings of the MIPS support.
Signed-off-by: Thomas Weißschuh
---
Changes in v2:
- Use olddefconfig instead of oldconfig
- mipso32{le,be} -> mips32{le,be}
- Link to v1:
https://lore.kernel.org/r/20231105-nolibc-mips-be-v1-0-6c2ad3e50...@weissschuh.net
---
Tho
More ABIs exist, for better clarity specify it explicitly everywhere.
Signed-off-by: Thomas Weißschuh
Acked-by: Willy Tarreau
---
tools/testing/selftests/nolibc/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/nolibc/Makefile
Allow some postprocessing of defconfig files.
Suggested-by: Zhangjin Wu
Signed-off-by: Thomas Weißschuh
Acked-by: Willy Tarreau
---
tools/testing/selftests/nolibc/Makefile | 6 ++
1 file changed, 6 insertions(+)
diff --git a/tools/testing/selftests/nolibc/Makefile
When installing nolibc to a sysroot arch.h is not used so its ABI check
is bypassed. This makes is possible to compile nolibc with a non O32 ABI
which may build but can not run.
Move the check into arch-mips.h so it will always be evaluated.
Signed-off-by: Thomas Weißschuh
Acked-by: Willy
On 2023-11-05 11:32:27+0100, Willy Tarreau wrote:
> On Sun, Nov 05, 2023 at 11:09:57AM +0100, Thomas Weißschuh wrote:
> > MIPS has many different configurations prepare the support of additional
> > ones by moving the build of MIPS to the generic XARCH infrastructure.
> >
> > Signed-off-by:
Hi Thomas,
On Sun, Nov 05, 2023 at 11:09:54AM +0100, Thomas Weißschuh wrote:
> Two bugfixes and some minor refactorings of the MIPS support.
>
> Signed-off-by: Thomas Weißschuh
besides the small comments about o32 and olddefconfig, consider this
series as:
Acked-by: Willy Tarreau
Thanks!
On Sun, Nov 05, 2023 at 11:09:55AM +0100, Thomas Weißschuh wrote:
> When an architecture is unsupported arch.h would silently continue.
> This leads to a lot of followup errors because my_syscallX() is not
> defined and the startup code is missing.
>
> Avoid these confusing errors and fail the
On Sun, Nov 05, 2023 at 11:09:59AM +0100, Thomas Weißschuh wrote:
> Allow some postprocessing of defconfig files.
>
> Suggested-by: Zhangjin Wu
> Signed-off-by: Thomas Weißschuh
> ---
> tools/testing/selftests/nolibc/Makefile | 6 ++
> 1 file changed, 6 insertions(+)
>
> diff --git
Hi Thomas,
On Sun, Nov 05, 2023 at 11:09:57AM +0100, Thomas Weißschuh wrote:
> MIPS has many different configurations prepare the support of additional
> ones by moving the build of MIPS to the generic XARCH infrastructure.
>
> Signed-off-by: Thomas Weißschuh
> ---
>
Allow some postprocessing of defconfig files.
Suggested-by: Zhangjin Wu
Signed-off-by: Thomas Weißschuh
---
tools/testing/selftests/nolibc/Makefile | 6 ++
1 file changed, 6 insertions(+)
diff --git a/tools/testing/selftests/nolibc/Makefile
b/tools/testing/selftests/nolibc/Makefile
index
Allow testing MIPS O32 big endian.
Signed-off-by: Thomas Weißschuh
---
tools/testing/selftests/nolibc/Makefile | 7 +++
tools/testing/selftests/nolibc/run-tests.sh | 2 +-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/nolibc/Makefile
MIPS has many different configurations prepare the support of additional
ones by moving the build of MIPS to the generic XARCH infrastructure.
Signed-off-by: Thomas Weißschuh
---
tools/testing/selftests/nolibc/Makefile | 12 +++-
tools/testing/selftests/nolibc/run-tests.sh | 2 +-
When an architecture is unsupported arch.h would silently continue.
This leads to a lot of followup errors because my_syscallX() is not
defined and the startup code is missing.
Avoid these confusing errors and fail the build early with a clear
error message and location.
Signed-off-by: Thomas
| 25 -
tools/testing/selftests/nolibc/run-tests.sh | 2 +-
4 files changed, 28 insertions(+), 7 deletions(-)
---
base-commit: 6de6466e41182875252fe09658f9b7d74c4fa43c
change-id: 20231105-nolibc-mips-be-892785dd3eaa
Best regards,
--
Thomas Weißschuh
More ABIs exist, for better clarity specify it explicitly everywhere.
Signed-off-by: Thomas Weißschuh
---
tools/testing/selftests/nolibc/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/nolibc/Makefile
When installing nolibc to a sysroot arch.h is not used so its ABI check
is bypassed. This makes is possible to compile nolibc with a non O32 ABI
which may build but can not run.
Move the check into arch-mips.h so it will always be evaluated.
Signed-off-by: Thomas Weißschuh
---
On Sun, Nov 05, 2023 at 10:23:05AM +0100, Thomas Weißschuh wrote:
> The script can run the testsuite for multiple architectures and provides
> an overall test report.
>
> Furthermore it can automatically download crosstools from
> mirrors.kernel.org if requested by the user.
>
> Example
The script can run the testsuite for multiple architectures and provides
an overall test report.
Furthermore it can automatically download crosstools from
mirrors.kernel.org if requested by the user.
Example execution:
$ ./run-tests.sh
i386: 162 test(s): 162 passed, 0 skipped, 0
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