Re: [PATCH gnumach] lapic timer: Calibrate based on 10 PIT sleeps for 10ms

[Samuel Thibault]

Samuel Thibault, le dim. 26 févr. 2023 10:03:28 +0100, a ecrit:
> Damien Zammit, le dim. 26 févr. 2023 03:34:59 +0000, a ecrit:
> > On 26/2/23 12:31, Damien Zammit wrote:
> > > NB: This relies on a fix for QEMU as one-shot PIT mode
> > > is currently broken in qemu.
> > 
> > Here is the corresponding qemu patch:
> > 
> > https://lists.nongnu.org/archive/html/qemu-devel/2023-02/msg07549.html
> 
> I'm afraid this means we should refrain from using this mode.
> 
> Because this mode being buggy in qemu means that OSes don't usually use
> it, which means that virtualization tools most probably don't notice
> their bugs in this mode.

(meaning: it'll be a perpetual burden, and people will criticize
the Hurd « it doesn't even run under <whatever yet other bugged
virtualization tool> »)

Samuel