#HazelOS (Formerly Noise-v2)

1 messages · Page 3 of 1

simple locust
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It's a very niche request

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unlike MP Cores or Memmap

sharp hound
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limine my beloved

inner glen
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wait

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does not using requests qualify

sharp hound
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it dosent

inner glen
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bruh

sharp hound
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whats the point of the protocol if u dont use requests

inner glen
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passing pointers

inner glen
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wait so that mean the (main) reason for HazelOS creation is defeated

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you sould definitely go back to noise-v2 👍

simple locust
inner glen
simple locust
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Turns out the only reliable way to get exact TSC count from hardware on KVM, is to lie to the kernel that it's running on HyperV

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Unless you implement KVM clock

simple locust
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freq_hz is reported by KVM clock
The other one is fetched from Limine's TSC request

image.png
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Not much difference, ~55k Hz

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Pro: Now, I've accurate TSC rate

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Cons: Estimating would've been much simpler

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I had to write especial processor state helpers for Hypervisor and Microarchitecture

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Should I submit this as a patch to Limine?

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I've added Limine's TSC request just in case some weird processor manages to execute it

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But by default the kernel would work with the one reported by the hardware

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not the one which is estimated logically

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Life would've been much simpler if both manufacturers agreed on which is the standard way of reporting TSC freq

sharp hound
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like XD bit and not NX bit

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lmfao

simple locust
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Like using bit 62 instead of bit 63

sharp hound
simple locust
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But for TSC frequency, I like Intel's way

sharp hound
simple locust
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I'm talking about calculating 1 second delta in TSC ticks

sharp hound
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well thats stupid

simple locust
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yet

sharp hound
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hpet isnt polling based but its more accurate

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and requires acpi on some machines

simple locust
sharp hound
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😭

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ig its very smol

simple locust
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Very small

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The issue is HPET is mmio-based, which can introduce latency

sharp hound
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its very smol

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u dont even notice it

simple locust
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It adds up overtime

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But that's not the main issue for me

sharp hound
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and has wayy less driftoff

simple locust
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I need TSC frequency for LAPIC's TSC-Deadline mode

sharp hound
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race conditions my beloved

simple locust
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I'm sick of them

simple locust
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Working IPI and IPI dispatcher :)

image.png
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At first, it was triggering #UD

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After some debugging, I realized that I haven't enabled fsgsbase in cr4

simple locust
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In other news, I also managed to implement TLB shootdowns :)

simple locust
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CLion has no plugin for GAS 😭

safe bramble
simple locust
safe bramble
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no i mean plugins

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some plugins that are used for asm can handle gas and other types

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tho it's only syntax highlighting

simple locust
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Let's see I've just installed aar10n's plugin

simple locust
safe bramble
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i'm using this one

image.png
simple locust
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I would've gone crazy with simple plain text

inner glen
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override file type

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nasm needs an extension gas does not

simple locust
inner glen
simple locust
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I'm regretting the microkernel part 😭

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I just can't figure out what to do with the scheduler

inner glen
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isnt it still normal?

simple locust
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Ik I've to implement a root server

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But Idk where to start

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I'm at a point where, I'll just implement memory manager and scheduler in kernel space

simple locust
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Should I enable x86-64-v2 baseline?

sharp hound
simple locust
sharp hound
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v2 dosent bring a lot anyway

simple locust
inner glen
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theres not a true point supporting cpus as cold as you

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unless you have a very specific reason

simple locust
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alr libstdc++'s freestanding implementation is broken

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I can't use std::max() with initializer list because <ranges> library requires a hosted header

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WTF!

simple locust
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PMM's fragmentation visualizer:

image.png
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Sorry for the =========

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It was the best way to separate it from rest of the logs

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Even tho it may look like LLM generated

inner glen
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it provies most of the stuff you need

simple locust
inner glen
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🥀

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anyways hows the microkernel

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btw i made the worst way for bug logging, wdyt? @simple locust 😭

<?xml version="1.0" encoding="UTF-8"?>
<BugHistory xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:noNamespaceSchemaLocation="scripts/schemas/BUG_HISTORY.xsd">

    <Title>ZXFoundation bug history</Title>
    <LastUpdated>2026-07-14</LastUpdated>

    <BugList>

        <Bug id="BUG-001">
            <FoundDate>2026-07-14</FoundDate>
            <Severity>High</Severity>
            <Description>
                Recursive fault on system check (critical or lower) due to poor DIAG X'288' implementation
            </Description>
            <Behavior>
                If any subsystem of the kernel triggers a system check (critical or lower), kernel will recursively
                fault with Operation Exception, and/or trigger a restart (due to misconfigured timebomb)
            </Behavior>
            <AffectedBuilds>
                <Range>
                    <From>
                        <Branch>26h2</Branch>
                        <Number>1510</Number>
                    </From>
                    <To>
                        <Branch>26h2</Branch>
                        <Number>1643</Number>
                    </To>
                </Range>
            </AffectedBuilds>
            <Status>Closed</Status>
            <FixedIn>
                <Branch>26h2</Branch>
                <Number>1645</Number>
            </FixedIn>
        </Bug>

    </BugList>

</BugHistory>
simple locust
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Just why?

simple locust
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I shot myself in the foot

inner glen
simple locust
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Had to rollback scheduling stuff

inner glen
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im here making a DGP kernel and enjoying myself

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(Domain/Gate/Portal)

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i.e. its a microkernel

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and sugar

inner glen
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but i feels its better

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since you can can view it

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visually

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like a drop down menu

simple locust
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Idk, Maybe I've burn all the motivation in the past couple of days

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Now I'm just a very tired all day long

inner glen
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i mean its not a speed run

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and theres really no need, its just better when its your liking

simple locust
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It's not specific osdev

simple locust
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Just life is getting too stressful

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Which diverts my attention from the things I like

inner glen
simple locust
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Can't play GTA 6 when it launches :(

inner glen
simple locust
inner glen
simple locust
inner glen
simple locust
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Now that's my go to stress reliever

inner glen
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figured there are so much more things todo

simple locust
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Adulting is so hard

inner glen
simple locust
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I just want to be a 6 year old, running circles around the park

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Not worrying about applying for job or paying bills or politics

inner glen
simple locust
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UEFI org went out of their way to separate low and high bits of NUMA node id in SRAT table 😭

image.png
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And I understand why they chose this (Fuck xapic)

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But that doesn't mean, I'm not salty about it

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Now, i've to write a helper function to get numa id :(

simple locust
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This is just pure ragebait

simple locust
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Everything except SRAT type 1 has 4 bytes together for NUMA node

manic furnace
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btw idk if you know but uacpi has srat in acpi.h

simple locust
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it does?

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I thought it was limited to MADT

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😭

manic furnace
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it has most tables yeah