On Thu, Mar 19, 2020 at 08:46:36AM -0700, Andy Lutomirski wrote:
> This can't possibly end well. Maybe have a little percpu list of
> GHCBs and make sure there are enough for any possible nesting?
Yeah, it is not entirely robust yet. Without NMI nesting the number of
possible #VC nesting levels s
On Thu, Mar 19, 2020 at 2:14 AM Joerg Roedel wrote:
>
> From: Joerg Roedel
>
> Handle #VC exceptions that happen while the GHCB is in use. This can
> happen when an NMI happens in the #VC exception handler and the NMI
> handler causes a #VC exception itself. Save the contents of the GHCB
> when n
From: Joerg Roedel
Handle #VC exceptions that happen while the GHCB is in use. This can
happen when an NMI happens in the #VC exception handler and the NMI
handler causes a #VC exception itself. Save the contents of the GHCB
when nesting is detected and restore it when the GHCB is no longer
used.
