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<a href="https://gitlab.rtems.org/Chloe">Yang Zhang</a> created a merge request: <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1483">!1483</a>
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Project:Branches: Chloe/rtems:fix-acpi-early-print to rtems/rtos/rtems:main
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Author: Yang Zhang
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Assignees: 
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Reviewers: 
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<h2 id="user-content-summary" dir="auto" style="margin-top: 0px; margin-bottom: 10px;" align="initial">Summary<a href="#summary" aria-label="Link to heading 'Summary'" data-heading-content="Summary" class="anchor" style="margin-top: 0px;"></a>
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<p dir="auto" style="color: #3a383f; margin: 0px 0px 1rem;" align="initial">bsps/shared/acpi: Use vprintk for AcpiOsPrintf</p>
<p dir="auto" style="color: #3a383f; margin: 0px 0px 1rem;" align="initial">AcpiOsPrintf() and AcpiOsVprintf() used vprintf(), which relies on
standard I/O and newlib reentrancy structures.</p>
<p dir="auto" style="color: #3a383f; margin: 0px 0px 1rem;" align="initial">When acpi_tables_initialize() is called from bsp_start(), the system
has not completed initialization and no thread is executing yet.
Calling vprintf() at this stage attempts to read libc_reent via a null
pointer, which on x86_64 targets causes a triple fault crash during boot.</p>
<p dir="auto" style="color: #3a383f; margin: 0px 0px 1rem;" align="initial">Use vprintk() from <rtems/bspIo.h> instead of vprintf() to route ACPICA
OSL output through the early polled kernel character device.</p>
<p dir="auto" style="color: #3a383f; margin: 0px 0px 1rem;" align="initial">Fixes <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/work_items/5751" title="bsps/shared/acpi: The table manager cannot print before initialization" class="gfm gfm-issue" data-original="#5751" data-link="false" data-link-reference="false" data-issue="29982" data-project="26" data-iid="5751" data-namespace-path="rtems/rtos/rtems" data-project-path="rtems/rtos/rtems" data-issue-type="issue" data-container="body" data-placement="top" data-reference-type="issue" style="margin-top: 0px;">#5751</a>.</p>
<h2 id="user-content-generative-ai" dir="auto" style="margin-top: 20px; margin-bottom: 0px;" align="initial">Generative AI<a href="#generative-ai" aria-label="Link to heading 'Generative AI'" data-heading-content="Generative AI" class="anchor" style="margin-top: 0px;"></a>
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