On Thu, 2023-06-22 at 16:16 -0700, Yamahata, Isaku wrote: > The upper 32 bits of error code are discarded at kvm_mmu_page_fault() > by lower_32_bits(). Now it's passed down as full 64 bits. > Because only FNAME(page_fault) depends on it, move lower_32_bits() into > FNAME(page_fault). I haven't looked into the code yet, but the last sentence around FNAME(page_fault) doesn't make a lot sense IIUC? For instance, we can have a shadow EPT table when EPT is enabled in L0 and exposed to L1. If we want to pass 64-bit error code to the handler, how can FRAME(page_fault)() depend on the lower 32-bit value?
