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[XTF PATCH v1 0/6] x86: add NS16550-compatible UART emulator test
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: dmukhin@xxxxxxxx
- Date: Wed, 11 Nov 2026 11:51:03 -0800
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- Cc: andrew.cooper3@xxxxxxxxxx, anthony.perard@xxxxxxxxxx, jbeulich@xxxxxxxx, julien@xxxxxxx, michal.orzel@xxxxxxx, roger@xxxxxxxxxxxxxx, sstabellini@xxxxxxxxxx, dmukhin@xxxxxxx, Denis Mukhin <dmukhin@xxxxxxxx>
- Delivery-date: Wed, 11 Nov 2026 19:51:26 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Pser-m365-app: SER-APP
Series introduces a test for NS16550-compatible UART.
Patches 1-3 are preliminary cleanups and fixups.
Patch 4 allows emulator to be the only registered console in
case console hypercall is not available.
Patch 5 adds minimally functional NS16550-compatible UART
driver.
Patch 6 adds a new test.
CI: https://gitlab.com/xen-project/people/dmukhin/xen/-/pipelines/3055921295
Link to XTF branch:
https://gitlab.com/xen-project/people/dmukhin/xtf/-/tree/emul-16x50?ref_type=heads
Link to emualator:
https://gitlab.com/xen-project/people/dmukhin/xen/-/commits/vuart-ns8250-v8
Denis Mukhin (6):
.gitignore: exclude tags
x86: introduce cpu_relax()
x86: isolate FEP in setup_fep()
x86: skip registering unavailable Xen console
common: add simplistic NS16550-compatible UART driver
x86: add NS16550-compatible emulator test
.gitignore | 1 +
arch/x86/include/arch/processor.h | 3 +
arch/x86/setup.c | 87 ++--
build/files.mk | 1 +
common/console.c | 3 +-
common/ns16550.c | 153 +++++++
include/xtf/console.h | 15 +-
include/xtf/hypercall.h | 4 +-
include/xtf/ns16550.h | 117 ++++++
tests/emul-ns16x50/.gitignore | 3 +
tests/emul-ns16x50/Makefile | 9 +
tests/emul-ns16x50/main.c | 644 ++++++++++++++++++++++++++++++
tests/emul-ns16x50/patterns.c | 65 +++
13 files changed, 1056 insertions(+), 49 deletions(-)
create mode 100644 common/ns16550.c
create mode 100644 include/xtf/ns16550.h
create mode 100644 tests/emul-ns16x50/.gitignore
create mode 100644 tests/emul-ns16x50/Makefile
create mode 100644 tests/emul-ns16x50/main.c
create mode 100644 tests/emul-ns16x50/patterns.c
--
2.56.0
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