On 2/5/21 3:38 PM, Kuppuswamy Sathyanarayanan wrote: > More details on cases where #VE exceptions are allowed/not-allowed: > > The #VE exception do not occur in the paranoid entry paths, like NMIs. > While other operations during an NMI might cause #VE, these are in the > NMI code that can handle nesting, so there is no concern about > reentrancy. This is similar to how #PF is handled in NMIs. > > The #VE exception also cannot happen in entry/exit code with the > wrong gs, such as the SWAPGS code, so it's entry point does not > need "paranoid" handling.
Considering: https://lore.kernel.org/lkml/20200825171903.GA20660@sjchrist-ice/ I would suggest revisiting this part of the changelog.
