Kexec (and HyperV) (was: Re: Dimdows Decay Syndrome Continues)

On Sat, 8 Feb 2025 06:36:16 -0000 (UTC), Lawrence D'Oliveiro
<ldo@nz.invalid> wrote in <vo6u10$3ue2q$1@dont-email.me>:

On Fri, 7 Feb 2025 20:29:39 -0500, CrudeSausage wrote:
 

On 2025-02-07 4:34 p.m., Lawrence D'Oliveiro wrote:
>

And today, Microsoft’s own experts have no clear idea what Windows is
doing any more. Why do you think it needs to reboot about five times
just to do an OS install?

 
I have to admit those reboots are a nuisance. Of course, Fedora
rebooted pretty often too.

 
There are ways to minimize that. Doesn’t RHEL support kexec, which
allows the old Linux kernel to pass control to the new one without
actually disrupting the userland?

You're thinking of live kernel patching.  kexec_load(2) load a kernel
that you can have execute if the current kernel crashes.  You do this
for debugging, usually.

ObWindows:  There was a post recently about various virtualization
solutions.  Linux subsystem for Windows now uses HyperV, and I'm
wondering if there is a native manager that Windows includes for other
HyperV guests?

--
-v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090 Ti
   OS: Linux 6.13.1 Release: Mint 22.1 Mem: 258G
   "These shoes look like Frankenstein's hand-me-downs."