Messages in this thread | | | Date | Wed, 29 Nov 2017 13:03:46 -0800 | Subject | Re: [PATCHv2 0/4] x86: 5-level related changes into decompression code | From | hpa@zytor ... |
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On November 29, 2017 12:58:15 PM PST, Andi Kleen <ak@linux.intel.com> wrote: >> We're really early in the boot -- startup_64 in decompression code -- >and >> I don't know a way print a message there. Is there a way? >> >> no_longmode handled by just hanging the machine. Is it enough for >no_la57 >> case too? > >The way to handle it is to check it early in the real mode boot code >when you >can still print messages. That is how missing long mode is handled. > >-Andi
Yes, and that test should be done automatically. However, we also check at several later points in case that code is bypassed by the bootloader. -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
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