Hi other time:
A week ago, I got to implement the cpu enabling during gnumach boot. But
the cpus aren't available to the system yet, I have to configure their
Local APIC, and add them to the scheduler.
But I don't know how can I add the cpus to the scheduler. I've seen some
functions, as *sched_i
I forgot to resend all
-- Forwarded message -
De: Almudena Garcia
Date: mar., 2 abr. 2019 a las 14:31
Subject: Re: Comments about SMP
To:
Hi all:
I've got to implements the cpu enumeration reading ACPI tables, and to boot
the system with *mach_ncpus=2* and a only cpu.
&
>> It appears mach_ncpus is hardcoded at compile time, maybe you just need
> to detect this value via ACPI (?)
Yes, this is the idea. I set mach_ncpus to maximum value to avoid broken the
cpu structure arrays.
But It's not the only that I need to enable cpus. I also need to find their
APIC s
Hi Almudena,
> El dom., 10 mar. 2019 a las 18:35, Samuel Thibault
> (mailto:samuel.thiba...@gnu.org>>) escribió:
> Adam Van Ymeren, le dim. 10 mars 2019 13:08:23 -0400, a ecrit:
> > I don't think that's necessary. The process doesn't have to
> initiated from gnumach. Hurd could have
Ok. I'll take notes about this idea.
Currently, I have an implementation to find lapic and ioapic from ACPI
tables, from the kernel.
In the test model runs correctly, now I'm porting this to gnumach.
This is a preliminary implementation:
https://github.com/AlmuHS/GNUMach_SMP/blob/wip/kern/acpi_rs
Adam Van Ymeren, le dim. 10 mars 2019 13:08:23 -0400, a ecrit:
> On March 10, 2019 11:58:14 AM EDT, Almudena Garcia
> wrote:
> >> My point is that it doesn't have to be during boot, it could be after
> >> userland started a least a bit.
> >>
> >
> >A simple question: Is It possible to run a routi
On March 10, 2019 11:58:14 AM EDT, Almudena Garcia
wrote:
>>
>> My point is that it doesn't have to be during boot, it could be after
>> userland started a least a bit.
>>
>
>A simple question: Is It possible to run a routine in userland from
>gnumach?
>Or It's necessary to run a external user
>
> My point is that it doesn't have to be during boot, it could be after
> userland started a least a bit.
>
A simple question: Is It possible to run a routine in userland from
gnumach?
Or It's necessary to run a external userland application, as a Hurd server.
I don't know if could be possible
Almudena Garcia, le dim. 10 mars 2019 16:04:29 +0100, a ecrit:
> I don't sure about you says. Are you suggesting to boot the other cores from
> a
> Hurd server?
I mean to possibly provide from userland to the kernel the information
for booting the other cores.
> My idea is about to implement SM
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 sen
Almudena Garcia, le lun. 04 févr. 2019 12:08:28 +, 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. W
Nowadays, nobody uses MP Table, which is deprecated since 1997. Instead, modern
OS use ACPI tables.
The OSKIT SMP functions feels good: may I could use this as base.
El Lunes 4 de febrero de 2019, Damien Zammit escribió:
> Hi,
>
> On 04/02/19 06:27, Almudena Garcia wrote:
> > Possibly. I
Hi,
On 04/02/19 06:27, Almudena Garcia wrote:
> Possibly. I don't know if it's still relevant with nowadays' hardware,
> though: is APIC still at that address?
See [1] for coreboot's definition of the x86 multiprocessing table MP
table structures. See [2] for coreboot's implementation of
>
> though: is APIC still at that address?
>
I don't know, but we can search the current address reading from ACPI
tables, so It's not problem.
Another question: I found a project called OSKit, what feels to be Mach 2.x
branch.
What is the difference about gnumach and oskit?
In their repository
Hello,
Almudena Garcia, le dim. 03 févr. 2019 19:45:21 +0100, a ecrit:
> At first time, I found that Mach 4 also had a implementation of cpu_number()
> (in kernel/imps/cpu_number.h), with this:
>
> static inline int
> cpu_number()
> {
> return apic_local_unit.unit_id.r >> 24;
> }
>
> Later,
Hi all:
I'm researching about SMP support in Mach microkernel, reading code and
reviewing old messages in maillist.
Mach 4 code can be downloaded from here:
ftp://ftp.lip6.fr/pub/mach/mach4/mach/
And, exploring old code, I'm find some interesting things:
At first time, I found that Mach 4 also
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