On Tue, Jan 08, 2019 at 02:07:19PM +0000, Julien Thierry wrote: > When using VHE, the host needs to clear HCR_EL2.TGE bit in order > to interract with guest TLBs, switching from EL2&0 translation regime > to EL1&0. > > However, some non-maskable asynchronous event could happen while TGE is > cleared like SDEI. Because of this address translation operations > relying on EL2&0 translation regime could fail (tlb invalidation, > userspace access, ...).
Why would an NMI context need to access user space? (just curious what breaks exactly without this patch; otherwise it looks fine) -- Catalin
