84 lines
2.2 KiB
ReStructuredText
84 lines
2.2 KiB
ReStructuredText
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.. _faq:
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FAQ
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###
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Here are some frequently asked questions about the ACRN project.
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.. contents::
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:local:
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:backlinks: entry
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------
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What hardware does ACRN support?
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********************************
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ACRN runs on Intel Apollo Lake and Kaby Lake boards, as documented in
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our :ref:`hardware` documentation.
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Clear Linux* fails to boot on my NUC
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************************************
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If you're following the :ref:`getting_started` documentation and the NUC
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fails to boot, here are some options to try:
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* Upgrade your platform to the latest BIOS
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* Verify Secure Boot is disabled in the BIOS settings:
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- Depending on your platform, press for example, :kbd:`F2` while
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booting to enter the BIOS options menu, and verify "Secure Boot" is
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not checked in the "Boot Options"
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* Make sure you are using EFI (and not legacy BIOS)
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How do I configure ACRN's memory use?
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*************************************
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It's important that the ACRN Kconfig settings are aligned with the physical memory
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on your platform. Check the documentation for these option settings for
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details:
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* :option:`CONFIG_PLATFORM_RAM_SIZE`
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* :option:`CONFIG_SOS_RAM_SIZE`
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* :option:`CONFIG_UOS_RAM_SIZE`
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* :option:`CONFIG_HV_RAM_SIZE`
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For example, if memory is 32G, setup ``PLATFORM_RAM_SIZE`` = 32G
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::
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config PLATFORM_RAM_SIZE
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hex "Size of the physical platform RAM"
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default 0x200000000 if PLATFORM_SBL
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default 0x800000000 if PLATFORM_UEFI
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Setup ``SOS_RAM_SIZE`` = 32G too (The SOS will have the whole resource)
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::
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config SOS_RAM_SIZE
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hex "Size of the vm0 (SOS) RAM"
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default 0x200000000 if PLATFORM_SBL
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default 0x800000000 if PLATFORM_UEFI
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Setup ``UOS_RAM_SIZE`` to what you need, for example, 16G
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::
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config UOS_RAM_SIZE
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hex "Size of the User OS (UOS) RAM"
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default 0x100000000 if PLATFORM_SBL
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default 0x400000000 if PLATFORM_UEFI
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Setup ``HV_RAM_SIZE`` (we will reserve memory for guest EPT paging
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table), if you setup 32G (default 16G), you must enlarge it with
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(32G-16G)/2M pages (where pages are 4K). The example below is after
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HV_RAM_SIZE is changed to 240M
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::
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config HV_RAM_SIZE
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hex "Size of the RAM region used by the hypervisor"
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default 0x07800000 if PLATFORM_SBL
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default 0x0f000000 if PLATFORM_UEFI
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