manual: document must have CPU features for x86#569
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I don't think it's necessary to give either the kernel reference nor the exact way to check this, just the list of necessary features. To make it easier you could probably specify the specific microarch (e.g. nehalam or zen2, I made those up) for is the minimum for which it works. |
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The most user friendly way of listing the required features would be to list the matching /proc/cpuinfo flags. |
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I thought about this but most of the VT-x features doesn't correspond to a |
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| The `x86_64_generic` platform's kernel configuration requires these features from your CPU: | ||
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| | Name | /proc/cpuid flag | |
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/proc/cpuinfo? I'd also mention in the text (not the table) that you can check with e.g. cat /proc/cpuinfo | grep xsave; and just make the table header the "cpuinfo feature flag" or something
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/proc/cpuinfo?
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| | Name | /proc/cpuid flag | | ||
| |----------------------------------|-------------------| | ||
| | Enable VMX outside SMX operation | (Checked via MSR) | |
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I would at least keep the name of the MSR or a reference to the Intel manual here so that people can check this, even if manually.
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This is useful for users of Microkit to check that their environment support all the required features by the kernel. Rather than getting a nasty error at boot time. Signed-off-by: Bill Nguyen <bill.nguyen@unsw.edu.au>
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This is useful for users of Microkit to check that their environment support all the required features by the kernel. Rather than getting a nasty error at boot time.
Closes #507.
One thing I'm a bit sketchy on is that the VT-x features table is not rendered very nicely in the PDF:
One thing I could do is that I could refactor the table to be grouped by MSR, but I don't know which is better,