f63f0912c6
Fixed typo in LetsEncrypt example Removed duplicate Datanet entry from main index.rst Reworked Use Kubernetes CPU Manager Static Policy prerequisite block. Restored fault/index version of FM toctree in top-level index. Added merged doc entries to top level index.rst. Incorporated review comments. Also some generic formatting clean-up such as converting abbreviations to rST-style :abbr: markup. Moved url with embedded substitution out of code-block. Addressed patch 2 review comments. Some addtional rST tidying. See comment replies for open questions/issues. This patch fixes an issue with 'stx' in filenames that may differ downstream using-an-image-from-the-local-docker-registry-in-a-container-spec new substitution and changing code-blocks to parsed-literals as required. Initial submission for review. Note that a couple of references to WR persist in examples. These will be marked up with comments in the review. Signed-off-by: Stone <ronald.stone@windriver.com> Change-Id: I1efef569842caff5def9dc00395b594d91d7a5d0 Signed-off-by: Stone <ronald.stone@windriver.com>
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49 lines
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.. ihj1591797204756
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.. _known-limitations:
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================================
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Known Kata Container Limitations
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================================
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This section describes the known limitations when using Kata containers.
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.. _known-limitations-section-tsh-tl1-zlb:
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--------------
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SR-IOV Support
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--------------
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A minimal **kernel** and **rootfs** for Kata containers are shipped with
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|prod-long|, and are present at /usr/share/kata-containers/. To enable certain
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kernel features such as :abbr:`IOMMU (I/O memory management unit)`, and desired
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network kernel modules, a custom kernel image, and rootfs has to be built. For
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more information, see `https://katacontainers.io/
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<https://katacontainers.io/>`__.
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.. _known-limitations-section-ngp-ty3-bmb:
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-------------------
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CPU Manager Support
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-------------------
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Kata containers currently occupy only the platform cores. There is no
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:abbr:`CPU (Central Processing Unit)` manager support.
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.. _known-limitations-section-wcd-xy3-bmb:
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---------
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Hugepages
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---------
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.. _known-limitations-ul-uhz-xy3-bmb:
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- Similar to the SR-IOV limitation, hugepage support must be configured in a
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custom Kata kernel.
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- The size and number of hugepages must be written using the
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:command:`io.katacontainers.config.hypervisor.kernel\_params` annotation.
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- Creating a **hugetlbfs** mount for hugepages in the Kata container is
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specific to the end user application.
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