Re: [RFC] docs: FRED support in Xen

2025-01-07 Thread Jan Beulich
On 06.01.2025 17:06, Andrew Cooper wrote: > On 06/01/2025 2:28 pm, Jan Beulich wrote: >> On 03.01.2025 21:47, Andrew Cooper wrote: >>> +There are several uses of the vm86 fields in Xen: >>> + >>> + #. ``struct vcpu`` embeds a ``struct cpu_user_regs`` to hold GPRs/etc when >>> +the vCPU is sched

Re: [RFC] docs: FRED support in Xen

2025-01-06 Thread Jan Beulich
On 06.01.2025 17:06, Andrew Cooper wrote: > On 06/01/2025 2:28 pm, Jan Beulich wrote: >> On 03.01.2025 21:47, Andrew Cooper wrote: >>> + #. In x86_emulate.c's ``put_fpu()``. As far as I can tell, this is >>> +completely buggy; the values will be poisoned for HVM guests, and stale >>> +from

Re: [RFC] docs: FRED support in Xen

2025-01-06 Thread Andrew Cooper
On 06/01/2025 2:28 pm, Jan Beulich wrote: > On 03.01.2025 21:47, Andrew Cooper wrote: >> Signed-off-by: Andrew Cooper >> --- >> CC: Jan Beulich >> CC: Roger Pau Monné >> >> An initial RFC discussion and plan. Open TODOs are at the end. >> >> This can be viewed online at: >> >> https://andrew

Re: [RFC] docs: FRED support in Xen

2025-01-06 Thread Jan Beulich
On 03.01.2025 21:47, Andrew Cooper wrote: > Signed-off-by: Andrew Cooper > --- > CC: Jan Beulich > CC: Roger Pau Monné > > An initial RFC discussion and plan. Open TODOs are at the end. > > This can be viewed online at: > > https://andrewcoop-xen.readthedocs.io/en/docs-devel/hypervisor-gui

[RFC] docs: FRED support in Xen

2025-01-03 Thread Andrew Cooper
Signed-off-by: Andrew Cooper --- CC: Jan Beulich CC: Roger Pau Monné An initial RFC discussion and plan. Open TODOs are at the end. This can be viewed online at: https://andrewcoop-xen.readthedocs.io/en/docs-devel/hypervisor-guide/x86/fred.html I've got an 8-patch series doing the cpu_use