Rootkit
#Nyaux
surreal path
china has all my data ngl
kind root
idk man i just wanna focus on having good aim instead of ability spam
surreal path
im fucked
surreal path
idk man i just wanna focus on having good aim instead of ability spam
theres no ablitiy that insta kills you
just play the game well and ur good
surreal path
also theres lit kayo who disables ablities
frigid cliff
Cs and valo are like different genres imo
surreal path
with his knife thing
frigid cliff
Cs is a normal shooter val is a hero shooter
surreal path
u have wh abilities and stuff
just play kayo, disable the enemy teams abilities
done
surreal path
fair point
frigid cliff
Yeah valorants ac is picky as fuck
molten grotto
I have played cs like once with a friend like 5 years ago and I sucked at it
frigid cliff
Ok but cs 2 tho
molten grotto
so I just mostly stick to overwatch
frigid cliff
Smokes
kind root
i used to play ow a lot
frigid cliff
Fr
frigid cliff
If ow2 actually had a campaign like they promised
kind root
zarya or sigma
kind root
If ow2 actually had a campaign like they promised
nah thats abandoned
ow2 is just ow1 but u have battle pass and overpriced skins instead of loot boxes
frigid cliff
I know because blizzard fucking sucks at making games
kind root
yeah
frigid cliff
ow2 is just ow1 but u have battle pass and overpriced skins instead of loot boxe...
Ow2 is just ow1 but you have to pay full price for the same game a second time
kind root
if u wanna keep up with the skins u have to pay way way more
frigid cliff
Easy cash grab
kind root
in ow1 u could grind all of them but that was making them less money obv
molten grotto
whats ur main
I mostly play junk + cass (this is from this comp season)
kind root
one shot hook is very enjoyable
surreal path
oh man
molten grotto
there is also the classic event rn
surreal path
real??
molten grotto
with the original heroes + abilities
kind root
yeah i tried it, but they didnt even bother adding ranked to it lol
surreal path
WAIT FR
kind root
like whats the point lol
surreal path
OH SHITTTT
LEMEM HOP ON OW2
wait fuck
lemme
first finish up code with the hpet
brb
shouldnt take
5 minutes
frigid cliff
Lmao
kind root
but classic def feels like a breath of fresh air
frigid cliff
Never make promises like that because you’re going to end up spending the next 2 weeks with sleepless nights trying to finish hpet
kind root
its like reading 1 register lol
surreal path
Never make promises like that because you’re going to end up spending the next 2...
what
bro
hpet is so fucking easy
how the hel
frigid cliff
Not specifically hpet
I just have superstition when it comes to saying I’ll complete things in a timely manner
surreal path
yea i might get stuck
somewhere
but its fine
it wont be as bad
as before
im not gonna be making the same mistakes anyway
and im working on my own time
kind root
for the love of god stop speedrunning it
molten grotto
I should make some sort of emulator/virtualizer in crescent so then I can run nyaux inside it 
frigid cliff
It’s a leisurely pace if you ask idfk fast people
kind root
anyways if u arent keep at it idk
frigid cliff
Like Usain Bolt
surreal path
anyways if u arent keep at it idk
yea i am not speedrunning
molten grotto
I should make some sort of emulator/virtualizer in crescent so then I can run ny...
maybe I can get it to usable state before nyaux has bash (likely not lol)
kind root
maybe I can get it to usable state before nyaux has bash (likely not lol)
a kvm-like framework?
molten grotto
yes and a virtual machine using it
frigid cliff
Average weekend project
molten grotto
I unironically though about that, then I could run actual apps maybe
kind root
u can get that up an running in a few months probably
surreal path
I unironically though about that, then I could run actual apps maybe
run nyaux
inside
creasant
molten grotto
then inside nyaux bash
kind root
creasant 💀
surreal path
corssiant
surreal path
then inside nyaux bash
no
then inside nyaux
crossiant
then inside crossiant
nyaux
molten grotto
idk if the cpu likes that, would probably have to be software virt at that point lol
molten grotto
then finally run windows for all the apps
frigid cliff
Snaps
kind root
nested virt is a thing yeah\
molten grotto
to some point yeah but can you arbitrary nest them?
kind root
yup
frigid cliff
I don’t see why not
kind root
each layer would be slower than the previous
surreal path
cpu dies
kind root
because every vmexit would chain
frigid cliff
A speed limit inevitably but I don’t see why you wouldn’t be able to just have endless chained vms
molten grotto
while you are it also make all apps their own vm's (with their own os instance)
frigid cliff
Yeah, as long as qemu supports emulating vmexit I don’t see why you wouldn’t be able to endlessly chain them
molten grotto
https://tenor.com/view/quaso-croissant-cat-french-gif-8533456335186036682
at this point maybe I should make a croissant the crescent logo
idk what should I seriously make it tho, I though about a crescent moon but idk
have to think about it
proceeds to not do it until its too late and I stop developing it
frigid cliff
but that would take a while
I’d like to imagine when sys admins get access to a super computer the first thing they do with them before doing like research or breaking encryption of government adversaries is stupid shit like this
molten grotto
it could be a fun experiment yeah
kind root
idk what should I seriously make it tho, I though about a crescent moon but idk
i thought it was a star wars reference
iirc they had something like that
molten grotto
oh yeah looks like it does have all kinds of things that contain that word
I didn't even know that lol
I think I just originally looked at some word list and picked it from there
surreal path
iirc they had something like that
oh
oh
oh
oh
here
it page faults
cr2 is 0
error code is write to non present page
what i called
i swear if this is another allocator bug
im gonna blow my brains out
kind root
this is not how this api works
surreal path
oh
kind root
hpet_table shouldnt be a pointer
kind root
yes...
surreal path
yea i get u
surreal path
okay works now!
@frigid cliff
got stuck doing the hpet huh
lit
5 minutes
i finished it
lool
hexed mango
69 20 6C 6F 76 65 20 69 74 61 6E 69 75 6D 2A
surreal path
69 20 6C 6F 76 65 20 69 74 61 6E 69 75 6D 2A
😡
thorn bramble
i hate you
and i hate u, i play df 😭
i mean for the most part it’s just me being bad 
but it’s staying when u predict a tracer blink or whatever that other thing is
haven’t played this shit in forever i forgot everything
flat nymph
In pmOS, I have a map of { GSI, {CPU ID, Vector} }, which I allocate to a random CPU on first use, or reuse if it's already configured, which should work with interrupt line sharing
(if I bothered to add multiple IRQ per vector in kernel, which shouldn't be difficult...)
thorn bramble
satisfying* whoops
typing with one eye closed and 2nd half open doesn't work that well
surreal path
hi chatji
im having a deep think
about if i should start designing the kernel around smp
or if i should just assume one core for now til bash and then redo everything for smp later
finite summit
about if i should start designing the kernel around smp
Yes
molten grotto
im having a deep think
"So our so-called Lord Ny
aux is a three-meter human male, possibly a Jedi, certainly a Force user, wandering around in a world where it probably doesn't understand anything."
/jk
surreal path
> "So our so-called Lord Ny~~a~~ux is a three-meter human male, possibly a Jedi,...
😭 😭
molten grotto
yeah its good to design with it in mind to start with
surreal path
im guessing i store anything cpu related in gs
surreal path
yeah its good to design with it in mind to start with
yea fair
molten grotto
😭 😭
I found that in some kind of starwars wiki while I were looking for crescent in there 
molten grotto
ofc not with nyaux but with nyax
finite summit
im guessing i store anything cpu related in gs
Not this again......
surreal path
Not this again......
surreal path
Use the message history of this thread
kk
@finite summit i think i understand, store a ptr to cpu local shit in gs base
finite summit
Use the search feature
finite summit
#1230349543623757845 message
surreal path
Use the search feature
yea cpu_local struct
finite summit
Look through those couple hours
surreal path
but i understand this
???
why do i need to look at this a couple of hours if i understand this
😭
surreal path
yep
write to gs base a ptr to cpu local struct, different for each cpu. im gonna store shit i need for my interrupt shit in there as well
cause yes
finite summit
write to gs base a ptr to cpu local struct, different for each cpu. im gonna sto...
Wut
surreal path
this garbage, storing ptrs for uacpi handlers and stuff
and also
making this per cpu
finite summit
making this per cpu
Why?
molten grotto
you are unlikely to have so many devices that you'd actually need per-cpu idt
surreal path
okay
finite summit
this garbage, storing ptrs for uacpi handlers and stuff
When nyaux abstract IRQs
?
obos just gives uacpi a pointer to a struct irq
Which handles everything
surreal path
ehhh idrk how to abstract it well
surreal path
obos just gives uacpi a pointer to a `struct irq`
dunno how this works
molten grotto
my irq abstraction is ```cpp
struct IrqHandler {
DoubleListHook hook {};
kstd::small_function<bool(IrqFrame* frame)> fn {};
bool can_be_shared {};
};
void register_irq_handler(u32 num, IrqHandler* handler);
void deregister_irq_handler(u32 num, IrqHandler* handler);
Magic
surreal path
my irq abstraction is ```cpp
struct IrqHandler {
DoubleListHook hook {};
...
ummm, u still need a global array to access
molten grotto
yes ```cpp
static DoubleList<IrqHandler, &IrqHandler::hook> IRQ_HANDLERS[256] {};
finite summit
nyaux on phones when
Eventually
Just wait until I have the willpower to port to aarch64
molten grotto
Just wait until I have the willpower to port to aarch64
there are also a lot of fun devices there like reset controllers, clocks and ldos lol (no its not that fun when you have to configure them before you can write a driver for the actual thing you want to use)
edgy pilot
Not this again......
wait people store a whole struct in there?
hexed mango
about if i should start designing the kernel around smp
Yes
edgy pilot
nyaux itanium port when
hexed mango
Soon, I pray
tawdry mirage
you are unlikely to have so many devices that you'd actually need per-cpu idt
well on systems with many cores and per-queue msis i can see it happening
molten grotto
well on systems with many cores and per-queue msis i can see it happening
well yeah its possible but that's unlikely to happen on a "normal" pc
and even if it would happen you could still share irqs at the cost of performance
tawdry mirage
well sharing msis doesn't really work since they're edge triggered no?
you could just scale down the amount of queues
molten grotto
well sharing msis doesn't really work since they're edge triggered no?
oh yeah I didn't think about that
finite summit
wait people store a whole struct in there?
I do
edgy pilot
why
tawdry mirage
what do you store there?
finite summit
unkempt relic
well on systems with many cores and per-queue msis i can see it happening
alternative approach: share the IDT vector between CPUs
(i considered this, opted against it for now, might change my mind)
tawdry mirage
https://github.com/OBOS-dev/obos/blob/master/src%2Foboskrnl%2Fscheduler%2Fcpu_lo...
that was more aimed at ilobilo :^)
unkempt relic
the main reason i opted against it for now, it's hard to design a cross-platform abstraction for this, because some other platforms don't permit something like this
finite summit
https://github.com/OBOS-dev/obos/blob/master/src%2Foboskrnl%2Fscheduler%2Fcpu_lo...
Basically just scheduler shit
finite summit
that was more aimed at ilobilo :^)
Oops
edgy pilot
that was more aimed at ilobilo :^)
I meant fitting a struct in there instead of a pointer to one
I might have misunderstood
tawdry mirage
ah well i thought it was obvious that it's a pointer to the struct
finite summit
I store a pointer to a struct lol
tawdry mirage
https://github.com/OBOS-dev/obos/blob/master/src%2Foboskrnl%2Fscheduler%2Fcpu_lo...
also no self pointer?
how do you get the pointer
rdmsr?
tawdry mirage
lol
finite summit
I wonder what kinda speed increase I could get if I had a self pointer
edgy pilot
I do wrmsr and mov gs:[0]
unkempt relic
I wonder what kinda speed increase I could get if I had a self pointer
i have one for convenience but i decided to have a struct cpu_locals and put most cpu locals in there
advantage is on most arches you can do a cpu-local-data-register + offset to something important (curthread for instance) load in one instruction
molten grotto
I also though that it might be a good idea to have something actually resembling tls too along with the per cpu struct because it gets kinda messy when you stuff everything including random pools into the cpu struct
edgy pilot
I do wrmsr and mov gs:[0]
I should probably have a self ptr instead of an index used for accessing a global array lol
unkempt relic
I also though that it might be a good idea to have something actually resembling...
i think there is strong merit for it, a cpu local struct is still useful so you can put things in there at fixed offsets (no register + other register offset load on riscv)
molten grotto
yeah its certainly useful for generic stuff but there are some misc things that could just be better being on their own
or well putting literally everything inside the struct would work too ofc but it might not be the most cleanest solution
unkempt relic
dynamic per cpu allocation useful too (i forgot the use case but i had one in mind)
molten grotto
especially with drivers and stuff
unkempt relic
that's a good one
the other option is allocate an array of as many as there are CPUs but that's slightly more tedious
spice yarrow
No need to be sorry
flat nymph
this garbage, storing ptrs for uacpi handlers and stuff
No
flat nymph
wait people store a whole struct in there?
I store all this... (and per-CPU interrupt handlers in it) https://github.com/ThatMishakov/pmOS/blob/main/kernel/generic/sched/sched.hh#L73
hexed mango
got caught up with hw
You BETTER be sorry!!!!!
Only NERDs do their homework and I'm gonna shove you in a locker, nyaux
hexed mango
Oh I read hw as homework
kind root
thats probably correct
plush hearth
Oh I read hw as homework
I read it as both
flat nymph
CPU got too mad with Nyaux
molten grotto
and battery if using a laptop lol
tbh it's actually true with basically all hobby os's, they use a lot of power because of no power management of any kind
finite summit
tbh it's actually true with basically all hobby os's, they use a lot of power be...
Common hobby OS L
OBOS
Has power management
kind root
well obos doesnt have fan or power zone management
molten grotto
also cpu power management
kind root
or thermal zone
kind root
Thats one way to call UAE
kind root
Nice
frigid cliff
Interesting
flat nymph
tbh it's actually true with basically all hobby os's, they use a lot of power be...
But if you hlt CPU, doesn't it not use energy?
kind root
But if you `hlt` CPU, doesn't it not use energy?
its much deeper than that
u can configure the state the cpu enters on halt
there are many of them
finite summit
Isn't there also stuff like mwait and monitor on x86
frigid cliff
I mean hlt isn’t like deep sleep
kind root
Isn't there also stuff like mwait and monitor on x86
that too is important yeah
kind root
I mean hlt isn’t like deep sleep
it can be configured to a state where waking up has a huge latency
frigid cliff
Interesting
finite summit
look up CPU P/C states
Does acpi have anything to do with these states
Nvm just remembered you telling me they don’t a couple months ago
kind root
nah its unrelated
but iirc u use ACPI to tell the firmware u support that
via _OSC
and it then dynamically loads extra cpu methods
i dont remmeber how these two are related
this stuff
finite summit
https://github.com/torvalds/linux/blob/master/drivers/acpi/bus.c#L313
Marker
surreal path
this garbage, storing ptrs for uacpi handlers and stuff
wait, because of smp
i might need to
wait
because
other cpus are gonna be modifying this
which is like
wait
molten grotto
you just have a lock?
surreal path
no but
like this is only suposed to be for one cpu
and like
if that
represents one cpus vector space
and then
another cpu modifies that
for something else
things can get fucking weird
😭
molten grotto
how
surreal path
lemme pull up vscode
kind root
Marker
i even found what it does
If set, OSPM is capable of independent C1, P state and T state support for each processor for multi-processor configurations.
etc etc
surreal path
how
well im not worried for that because this is gonna be happening on the bootstrap cpu anyway
for whatever uacpi does
butttttt
this
this will get modified
molten grotto
yes?
molten grotto
if you have some kind of driver there then yes
surreal path
cpu
molten grotto
if it's shared then yeah but why would that matter?
the irq is still only going to be triggered on whatever cpu you configure the io-apic/msi to send it to
surreal path
the irq is still only going to be triggered on whatever cpu you configure the io...
but i limit myself in the amount of isrs to only 256
so like one cpu
even if theres multiple
molten grotto
yes that's true
surreal path
thats stupid
molten grotto
but unless you are planning on running on eg. servers its very likely a non-issue
molten grotto
then do it the per cpu idt way
surreal path
i can make it so
molten grotto
yes
surreal path
i need a scheduler like now
so um
let me
wait i need lapic timer
shouldnt be hard
brb
i found a bug
yea wtf
why am i putting 0
in ea
xx
bro wtf is this
sil
lol
finite summit
Rsi but one byte
finite summit
Fr
tawdry mirage
sil ly
surreal path
idk what to do now
i cant exactly return
as ill only return edx
why does readmsr divide edx and eax
molten grotto
why does readmsr divide edx and eax
might be because of legacy
you can just combine them tho
surreal path
you can just combine them tho
how exactly, bitwise or?
molten grotto
yes
surreal path
kk
tawdry mirage
edx << 32 | eax
surreal path
oki
surreal path
edx << 32 | eax
ummmmm
sir
mr
how tf am i supposed to do it then
static inline uint32_t rdmsr(uint32_t msr) {
uint32_t low = 0;
uint32_t hi = 0;
__asm__ volatile ("rdmsr" : "=a"(low), "=d"(hi) : "c" (msr));
uint32_t combined = (low << 32)|hi;
}
cast it to a bigger type first
how do you expect
to shift a 32 bit integer
byu 32
kind root
uint32_t combined 💀
surreal path
okay
thorn bramble
yeah that isnt gonna work
surreal path
sorry i fixed it
static inline uint64_t rdmsr(uint32_t msr) {
uint32_t low = 0;
uint32_t hi = 0;
__asm__ volatile ("rdmsr" : "=a"(low), "=d"(hi) : "c" (msr));
uint64_t combined = ((uint64_t)low << 32)|hi;
return combined;
}
better now
thorn bramble
no reason to apologize
surreal path
okay
surreal path
alright
surreal path
BRO GO TO SLEEP 😭
surreal path
u better
thorn bramble
onjly been up fr abtou 12 hroujss
surreal path
all done
static inline uint64_t rdmsr(uint32_t msr) {
uint32_t low = 0;
uint32_t hi = 0;
__asm__ volatile("rdmsr" : "=a"(low), "=d"(hi) : "c"(msr));
uint64_t combined = ((uint64_t)low << 32) | hi;
return combined;
}
static inline uint64_t wrmsr(uint32_t msr, uint64_t value) {
uint32_t low = (uint32_t)value;
uint32_t hi = (uint32_t)(value >> 32);
__asm__ volatile("rdmsr" : : "a"(low), "d"(hi), "c"(msr));
}
:)
surreal path
now lapic timer
kind root
wrmsr
rdmsr
thorn bramble
i dont get it
surreal path
static inline uint64_t rdmsr(uint32_t msr) {
uint32_t low = 0;
uint32_t hi = 0;
__asm__ volatile("rdmsr" : "=a"(low), "=d"(hi) : "c"(msr));
uint64_t combined = ((uint64_t)low << 32) | hi;
return combined;
}
static inline uint64_t wrmsr(uint32_t msr, uint64_t value) {
uint32_t low = (uint32_t)value;
uint32_t hi = (uint32_t)(value >> 32);
__asm__ volatile("wrmsr" : : "a"(low), "d"(hi), "c"(msr));
}
oh
cinder plinth
no my github is rdmsr
surreal path
goodnighttttt
because i no have scheduler im just gonna do
struct per_cpu_data {
void (*idt_handlers[256])(struct StackFrame *frame);
}
struct per_cpu_data *data = kmalloc(sizeof(per_cpu_data));
wrmsr(GS_BASE, data);
FOR NOW
and i am going to change a LOT of things now with ze idt
and
wait
ill leave the bootstrap cpu alone in how it handles its idt shit
but ill make operations u can perform on this per cpu idt
the idt.c file is just for bootstrap cpu only
steady flume
whats wrong with the names
what copy pasting does to a mf (we'av all done it before)
surreal path
what copy pasting does to a mf (we'av all done it before)
lol fr
surreal path
and i am going to change a LOT of things now with ze idt
good design plan chat?
steady flume
i dunno i'm just lurking in this server in the hopes to passively scrape up enough knowledge to help me when i eventually have enough time and have a strong want to write my own OS
surreal path
hi chat not feeling up to do much today
but i got some smp working ig
which was cool
im taking my time afterall so no need to speedrun lol
surreal path
wtf
lollllll
bro
wtf
page fault 0x10???????
HOWWWW
all i hecking do
HOWWWW
wtf
dont tell me its MORE vmm shit
i swear to god
i have a lock on my
fucking flanterm term
RIP IS 0
BTW
RIP IS FUCKING ZERO
plush hearth
RIP IS FUCKING ZERO
stack corruption?
surreal path
stack corruption?
idfk?????
limine is providing the stack sooooo
shouldnt be from that
limine is providing the stack
im using
goto address
surreal path
yea
plush hearth
are you doing any assembly which might push more than what is popped?
plush hearth
interrupts?
surreal path
im not even installing any interrupts in the bootstrap function
i didnt do anything
no interrupt is firing
plush hearth
oh wait, are you starting other cpus?
surreal path
yes
plush hearth
oh I see
plush hearth
all i hecking do
haven't seen much of the code. is it safe for bootstrap to return?
surreal path
haven't seen much of the code. is it safe for `bootstrap` to return?
WAIT
one second
no its not safe
plush hearth
maybe mark it as noreturn so the compiler complains at you if you forget again
surreal path
init_smp(): Found CPU 0
init_smp(): Found CPU 1
init_smp(): Found CPU 2
init_smp(): Found CPU 3
init_smp(): Found CPU 4
init_smp(): Found CPU 5
bootstrap(): Hello from CPU bootstrap(): Hello from CPU 2
bootstrap(): Hello from CPU 6
bootstrap(): Hello from CPbootstrap(): Hello from CPU 3
U 51
bootstrap(): Hello from CPU 4
init_smp(): Found CPU 6
init_smp(): Found CPU 7
init_smpbootstrap(): Hello from CPU 8
(): Found CPU 8
init_smp(): Found CPU 9
init_smp(): Found CPU 10
init_smp(): Found CPU 11
init_smp(): Found CPU 12
init_smp(): Found CPU 13
init_smp(): Found CPU bootstrap(): Hello from CPU 14
bootstrap(): Hello from CPU 13
bootstrap(): Hello from CPU 11
bootstrap(): Hello from CPU 7
14
init_smp(): Found CPU 15
init_smp(): Found CPU 16
init_smp(): Found CPU 17
init_smp(): Found CPU 18
init_smp(): Found CPU 19
bootstrap(): Hello from CPU 1bootstrap(): Hello from CPU 19
bootstrap(): Hello from CPU 12
bootstrap(): Hello fr
bootstrap()5
om CPU : Hello from CPbootstrap(): Hello from CPU 9
bootstrap(): Hello from CPU 17
U 10
NYAUX Panic! Reason: 16
bootstrap(): Hello from CPU 18
why is this happening
i have a lock
on my terminal
surreal path
yep
yea
init_smp(): Found CPU 0
init_smp(): Found CPU 1
init_smp(): Found CPU 2
init_smp(): Found CPU 3
init_smp(): Found CPU 4
init_smp(): Found CPU 5
bootstrap(): Hello from CPU 2
init_smp(): Found CPU 6
init_smp(): Found CPU 7
init_smp(): Found CPU 8
init_smp(): Found CPU 9
init_smp(): Found CPU 10
bootstrap(): Hello from CPU 7
bootstrap(): Hello from CPU 1
init_smp(): Found CPU 11
init_smp(): Found CPU 12
init_smp(): Found CPU 13
init_smp(): Found CPU 14
init_smp(): Found CPU 15
init_smp(): Found CPU 16
init_smp(): Found CPU 17
init_smp(): Found CPU 18
init_smp(): Found CPU 19
bootstrap(): Hello from CPU 17
bootstrap(): Hello from CPU 15
bootstrap(): Hello from CPU 13
NYAUX Panic! Reason: Uhhh yeah wssup
bootstrap(): Hello from CPU 18
bootstrap(): Hello from CPU 8
bootstrap(): Hello from CPU 3
bootstrap(): Hello from CPU 14
bootstrap(): Hello from CPU 10
bootstrap(): Hello from CPU 16
bootstrap(): Hello from CPU 4
bootstrap(): Hello from CPU 9
oopsie uwu :3
bootstrap(): Hello from CPU 11
bootstrap(): Hello from CPU 5
bootstrap(): Hello from CPU 12
bootstrap(): Hello from CPU 19
bootstrap(): Hello from CPU 6
works now
plush hearth
oh ok
surreal path
(p cores and e cores but yk)
plush hearth
ah
surreal path
chat my gf is ghosted me WHERE TF IS SHE I WANNA YAP TO HER ABOUT THE FACT I GOT SMP WORKING IN NYAUX
😡
hexed mango
chat my gf is ghosted me WHERE TF IS SHE I WANNA YAP TO HER ABOUT THE FACT I GOT...
Sorry, she was busy with me while I yapped about MY OS
hexed mango
https://tenor.com/view/honest-reaction-gun-side-eye-my-honest-reaction-true-reac...
Is it bc I'm a trans woman? Wow nyaux... I see how it is... /j
worldly condor
linuxmaster on his way to getting banned
surreal path
linuxmaster on his way to getting banned
wait wheres the /j
surreal path
but im not transphobic
worldly condor
(/s /j)
worldly condor
is using tone indicators sarcastically evil?
surreal path
i wonder
BUT NOW
FUCKING
SCHEDULER
TIME
time to read back the thread
im gonna make a document designing and how implmentation
will work
desert crow
please do not fuck the scheduler
surreal path
of the nyaux scheduler
surreal path
please do not fuck the scheduler
😭 😭
nah im not gonna make it UB
or poopy
it will be a per cpu queue scheduler
load balancing later on
if i can learn how that works
edgy pilot
if i can learn how that works
you check if the load is unbalanced and if it is, balance it
surreal path
bru
hexed mango
@surreal path what scheduler design do u use atm
surreal path
<@787341689333350450> what scheduler design do u use atm
per cpu run queues
my bad was eepying
tender gorge
my bad was eepying
surreal path
💀
flat nymph
(interesting life decisions 
)
ripe plinth
i went to school today
imagine
-# same
flat nymph
Can you not bring a laptop to school?
haughty kite
no that's illegal
its not illegal
it may be forbidden by school rules
though then again maybe not
surreal path
let the man focus on school work
yea
i really have to
school work
so no work on nyaux for a bit (like until friday or smthin)
spice yarrow
sounds like a great plan
surreal path
hi sorry
been busy with school work
not today cause a lot of homework
but tmrw def
:)
finite summit
okay i js woke up
Yoyoyooy
I'm in GMT time zone now
In london
Doing osdev at 6 30 am is pretty unhealthy
surreal path
its fineee
but wtf
its in the fucking file
and i #pragma once every header file
wtf is the issue lmao
wait nvm have an idea
solved it
nvm
solved it
also i decided after a long think
im not doing a per cpu idt
its too complex and just it'd honestly be a waste of time
not rlly complex but
im lazy
surreal path
In london
damn u going home?
bro
BRO
its lit
0x1b
like seriously
why isnt my fucking bitmask working
it just makes the address 0
0x0
wtf????
bro what
help
finite summit
Cuz I can be
desert haven
yeah, and show the code for rdmsr
finite summit
Yes
surreal path
okay
surreal path
yeah, and show the code for `rdmsr`
static inline uint64_t rdmsr(uint32_t msr) {
uint32_t low = 0;
uint32_t hi = 0;
__asm__ volatile("rdmsr" : "=a"(low), "=d"(hi) : "c"(msr));
uint64_t combined = ((uint64_t)low << 32) | hi;
return combined;
}
desert haven
uh
plush hearth
```C
static inline uint64_t rdmsr(uint32_t msr) {
uint32_t low = 0;
uint32_t...
why is low being shifted left? are your variables backwards or something
surreal path
okay that solved everything
plush hearth
what time is it for you?
plush hearth
oh I see
surreal path
ye
surreal path
finite summit
damn u going home?
Yes
surreal path
heres what
one of the numbers look like
all look similar
but different
so im def accessing the lapic id register of the lapic
but i dont understand
why im not getting the proper id, even if i bitshift by 24 as per spec from the sdm for xapic even
i dont know what im doing wrong
anyone know?
kind root
where do u shift it
surreal path
where do u shift it
sorry for the late reply
was sleeping
but
static inline uint32_t get_lapic_id() {
uint64_t addr = (rdmsr(0x1b) & 0xfffff000);
uint64_t *ptr = (uint64_t *)(addr + hhdm_request.response->offset);
uint32_t val = *(uint64_t *)((uint64_t)ptr + 0x20);
return (val >> 24);
}
i do it here
which results in all lapic ids being 0
mhm
im reading 0x1b
which is the correct msr
for the lapic address
yeaaaa
clearly
not working
flat nymph
Don't you need to enable X2APIC to have MSRs?
flat nymph
Also, according to SDM, you're supposed to be reading 0x802
flat nymph
Then you're supposed to use MMIO instead of MSRs
surreal path
thats what im doing
flat nymph
Oh
surreal path
im using mmio and reading lapic addr + hhdm + 0x20
surreal path
😭 all good man
flat nymph
You're supposed to be reading it as volatile uint32_t *
surreal path
You're supposed to be reading it as `volatile uint32_t *`
yea but even doing that doesnt change anything
flat nymph
You're casting uint64_t * to uint32_t *, which is UB
(I've been bitten by it, gcc just issues noop)
I think?
May be not
surreal path
let me change it
static inline uint32_t get_lapic_id() {
uint64_t addr = (rdmsr(0x1b) & 0xfffff000);
volatile uint32_t *ptr = (volatile uint32_t *)(addr + hhdm_request.response->offset);
uint32_t val = *(volatile uint32_t *)((uint64_t)ptr + 0x20);
return (val >> 24);
}
changed
ill try running it
it solved it
@flat nymph thank you!
can u say always use volatile for mmio
so someone can pin it in this thread
so i never forget
😭
flat nymph
I mean I think it depends
desert haven
can u say always use volatile for mmio
Yeah, volatile means the memory has side effects outside of the C abstract machine - mmio fits that description.
Also yeah the width of an mmio access is important too. The lapic regs are 32bits wide, so you should operate on them in that size (use a volatile uint32_t*)
surreal path
anyways hi yall
time to work on some lapic init
get it to fire on each cpu
and then
its scheduler
the scary
very spooky
flat nymph
Just don't do UB and you'll be set 
edgy pilot
@surreal path some people are using nyaux as a reference
kind root
<@787341689333350450> some people are using nyaux as a reference
damn, where is this?
edgy pilot
damn, where is this?
cosmos server
I randomly opened it and saw people trying to use uacpi
edgy pilot
and they don't understand what "return 100ns increments" means
edgy pilot
for cosmos?
nope
kind root
and they don't understand what "return 100ns increments" means
good thing i got rid of this in the current pr
its now just nanoseconds
so that people dont get confused
edgy pilot
so that people dont get confused
kind root
lmao
its now just uacpi_kernel_get_nanoseconds_since_boot
surely u cant mess this one up
edgy pilot
yeah that's better
kind root
(well its not merged yet but soon)
kind root
yeah that's better
aml uses 100ns ticks internally and i just copied the acpica os interface for it initially
which i shouldnt have done
because acpica interfaces suck ass
edgy pilot
Linux switching to uacpi in a year
kind root
imo implementation details must be handled by the library instead of coming up with r-worded interfaces
finite summit
<@787341689333350450> some people are using nyaux as a reference
No way that ever goes well
edgy pilot
infy about to rewrite uacpi in C#
finite summit
When uacpi c# bindings
kind root
and its wrong anyway because _S5 can be a method returning a package instead of package directly
not to mention _PTS and stuff
kind root
yeah thats where they got that from
wicked loom
have you seen https://github.com/lowlevelmemes/acpi-shutdown-hack ?
kind root
this leads to stuff like that
kind root
have you seen https://github.com/lowlevelmemes/acpi-shutdown-hack ?
thats the same thing just cleaner, it assumes _S5 is a package and doesnt call _PTS so it will enter most laptops into a UB state
wicked loom
i think it checks if it's a package and just fails if it isn't?
as in gracefully handled
kind root
as graceful as it gets yeah
wicked loom
i mean it's better than not checking at all
kind root
outw(facp->PM1a_CNT_BLK, SLP_TYPa | (1 << 13));
if (facp->PM1b_CNT_BLK)
outw(facp->PM1b_CNT_BLK, SLP_TYPb | (1 << 13));
This will break on some hw too
u cant just write both at the same time since some hw breaks when that happens
u have to first write the sleep type, and only then the sleep bit
kind root
tldr do not use this, it's quite fragile
basically yeah, for desktops it will probably work for like 85% of them
wicked loom
a proper ACPI implementation is obviously a much better solution lol
kind root
for laptops idk, way less
wicked loom
i actually tested it on many machines of mine and i couldn't find any on which it didn't work (or appear to work, at least)
that said, it's obviously a limited sample
kind root
and u tested reboot after this shutdown right?
wicked loom
like, starting them up again? if so, yes
kind root
yeah, basically
its UB so ya know how it goes
sometimes it just works ™️
didnt even realize it was your project lol
elder shoal
surely u cant mess this one up
Since what boot? The init process is run? The kernel is run? The computer is powered on? 
wicked loom
didnt even realize it was your project lol
calling it a project is disrespectful to any real project
it's a literal disembodied hack that @vague mural helped me improve a little
not something i'd recommend anyone use
kind root
lol
nah its fine for casual use
like for quick testing or emulators
especially if u know it works on your specific hw
edgy pilot
@kind root #834060104143208487 message
kind root
bruh 💀
finite summit
<@353593948523986945> https://discord.com/channels/833970409337913344/8340601041...
Is that cosmos discord?
edgy pilot
yes
edgy pilot
surreal path
hi
sorry
im not in the mood
to work on nyaux today
a lot of horrible things happened
another attempt today happened
and i rlly dont feel like doing anything right now for today at least
im sorry
this keeps happening
but
yea.
its hard to be keeping myself stable anymore
its making it difficult to do anything atp
i did finish getting lapic working though
yesterday i did
ill push it later
edgy pilot
tender gorge
its hard to be keeping myself stable anymore
its ok, take a break if you need to and focus on yourself 🫂
surreal path
hi
its been 2 days and i think im ready to come back
i feel much better
back to what we were doing
im gonna start writing the scheduler
🤞
tender gorge
i feel much better
Glad to hear that 
surreal path
interesting
that testing the actual lapic code
gives this
one sec
huh?
now its page faulting
then 0xdf
tf
yea this is wheere things get difficult
with smp
oaky i know whats going on lol
47????
lollll
sorry
this makes no sense
WHY IS IT 47?
doing as asked
and oring it
should just
leave those other bits alone
ugh fine ill cast it into a uint8
AND IT DOESNT WORK
i dont understand?
surreal path
solved it
*sur_interrupt = 34 | (*sur_interrupt << 8);
wait
wait
wait
wait
wait
safe spireBOT
plush hearth
*sur_interrupt = 34 | (*sur_interrupt << 8);
surround it in ` so it doesn't format weirdly
desert haven
Nice to see you back btw, I hope your health has improved since you were sick 🙂
surreal path
let me think of something
surreal path
Nice to see you back btw, I hope your health has improved since you were sick 🙂
thanks
yea
apic got disabled
yk
yea
plush hearth
you probably should be reading it, anding out the bits you don't need, then oring the vector and APIC enable instead of just writing to it
plush hearth
that's what I was trying to say to do
surreal path
having some interrupt memes with isr stub 32
fun
i forgot my sleep meds
fuck
GUESS WHO ISNT SLEEPING
TIHSUG UYY
tawdry mirage
go to sleep
flat nymph
Sleep is for the weak (I slept for 3 hours today)
orchid dawn
median goblet
why im not getting the proper id, even if i bitshift by 24 as per spec from the ...
Are you though
Nevermind me, sorry
You fixed it
errant pawn
I need to eep around 10h a day
crystal scarab
eep
surreal path
go to sleep
do u know whats crazy
AT THE SAME TIME
my gf decided she wanted to see
other people
bro had me crying all night instead
im done with girls bro
genuinely
so intead of useful debugging
i just had a puddle of tears
damn chat
chat i need to make progress
obos is making more progres
s
then im doing in a week
:ratge
😡
this is like
mac vs windows
obos vs nyaux
real
nyaux is windows real
finite summit
im done with girls bro
gf haram
girlfriEND Girlfriends have an end
osdev has NO end