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[PATCH v7 0/7] xen/console: configurable conring size
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: dmukhin@xxxxxxxx
- Date: Mon, 13 Jul 2026 11:16:12 -0700
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- Cc: andrew.cooper3@xxxxxxxxxx, anthony.perard@xxxxxxxxxx, jbeulich@xxxxxxxx, julien@xxxxxxx, michal.orzel@xxxxxxx, roger.pau@xxxxxxxxxx, sstabellini@xxxxxxxxxx, dmukhin@xxxxxxxx
- Delivery-date: Mon, 13 Jul 2026 18:16:41 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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Series introduces compile-time configurable conring size along
with few cleanups in conring management.
Patch 1 updates conring{,_size} annotations to __ro_after_init as per [1].
Patch 2 optimizes switch from early conring to permanent conring.
Patch 3 optimizes code in conring_puts().
Patch 4 updates the conring buffer allocation code.
Patch 5,6 updates for the command line options for the serial driver.
Patch 7 introduces CONRING_CONRING_SHIFT to select compile-time
conring buffer size.
[1]
https://lore.kernel.org/xen-devel/1a5ed8ad-0cc7-4e05-9b9c-cd6930d9b9ea@xxxxxxxxxx
[2] Link to v6:
https://lore.kernel.org/xen-devel/20260509005714.892018-1-dmukhin@xxxxxxxx/
[3] Link to CI:
https://gitlab.com/xen-project/people/dmukhin/xen/-/pipelines/2673235063
Denis Mukhin (7):
xen/console: promote conring{,_size} to __ro_after_init
xen/console: use memcpy() in console_init_ring()
xen/console: use memcpy() in conring_puts()
xen/console: switch conring runtime allocation to xvmalloc
xen/serial: drop stale SERIAL_NEVER_DROP_CHARS
xen/serial: harden serial_tx_buffer checks
xen/console: make console buffer size configurable
docs/misc/xen-command-line.pandoc | 10 ++++-
xen/drivers/char/Kconfig | 21 +++++++++
xen/drivers/char/console.c | 71 ++++++++++++++++++++++---------
xen/drivers/char/serial.c | 24 +++++++++--
4 files changed, 99 insertions(+), 27 deletions(-)
--
2.54.0
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