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Re: [RFC 0/5] Introduce dynamic tracer using Livepatch


  • To: Ryo Takakura <takakura@xxxxxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Fri, 30 Oct 2026 11:31:23 +0100
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  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 30 Oct 2026 10:31:46 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 23.10.2026 06:48, Ryo Takakura wrote:
> Ryo Takakura (5):
>   xen/arm64: livepatch: enable attaching callbacks
>   xen/livepatch: Allow tracers to schedule livepatch
>   xen/tracing: prepare a livepatch payload and its controling interface
>   xen/tracing: Add a function tracer
>   xen/x86: livepatch: enable attaching callbacks
> 
>  xen/arch/arm/Kconfig                  |  13 +
>  xen/arch/arm/arch.mk                  |   3 +
>  xen/arch/arm/arm64/Makefile           |   1 +
>  xen/arch/arm/arm64/insn.c             |   5 +
>  xen/arch/arm/arm64/livepatch-asm.S    |  68 +++
>  xen/arch/arm/arm64/livepatch.c        |  39 ++
>  xen/arch/arm/include/asm/arm64/insn.h |   1 +
>  xen/arch/arm/xen.lds.S                |   5 +
>  xen/arch/x86/Kconfig                  |  13 +
>  xen/arch/x86/Makefile                 |   1 +
>  xen/arch/x86/arch.mk                  |   3 +
>  xen/arch/x86/livepatch-asm.S          |  60 +++
>  xen/arch/x86/livepatch.c              |  33 ++
>  xen/arch/x86/xen.lds.S                |   5 +
>  xen/common/Kconfig                    |  12 +
>  xen/common/Makefile                   |   6 +
>  xen/common/function_trace.c           | 274 ++++++++++
>  xen/common/hypfs_trace.c              | 743 ++++++++++++++++++++++++++
>  xen/common/livepatch.c                | 137 ++++-
>  xen/include/xen/hypfs_trace.h         |  42 ++
>  xen/include/xen/livepatch.h           |  14 +
>  xen/include/xen/livepatch_payload.h   |   7 +-
>  22 files changed, 1478 insertions(+), 7 deletions(-)
>  create mode 100644 xen/arch/arm/arm64/livepatch-asm.S
>  create mode 100644 xen/arch/x86/livepatch-asm.S
>  create mode 100644 xen/common/function_trace.c
>  create mode 100644 xen/common/hypfs_trace.c
>  create mode 100644 xen/include/xen/hypfs_trace.h

Nit: Dashes in favor of underscores please in new files' names.

Jan



 


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