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Re: Comments about SMP

From: Almudena Garcia
Subject: Re: Comments about SMP
Date: Sun, 10 Mar 2019 16:04:29 +0100

I don't sure about you says.  Are you suggesting to boot the other cores from a Hurd server?
My idea is about to implement SMP support from gnumach, searching and starting the cpus during the boot.

I can find the other cpus (the local apic and ioapic) from ACPI tables, but after this I need to send an IPI to enable them, and configure their lapic and ioapic.

El dom., 10 mar. 2019 a las 15:28, Samuel Thibault (<samuel.thibault@gnu.org>) escribió:
Almudena Garcia, le lun. 04 févr. 2019 12:08:28 +0000, a ecrit:
> Nowadays, nobody uses MP Table, which is deprecated since 1997. Instead, modern OS use ACPI tables.

Thinking about it: parsing ACPI tables could be done in userland.
Userland could then tell the kernel how to boot other cores. We don't
really need multiple cores during early boot anyway.


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