On 05/24/18 16:09, Auger Eric wrote: > Hi Laszlo, > > On 05/24/2018 03:59 PM, Laszlo Ersek wrote: >> On 05/24/18 15:07, Peter Maydell wrote: >>> On 24 May 2018 at 13:59, Laszlo Ersek <ler...@redhat.com> wrote: >>>> On 05/24/18 11:11, Peter Maydell wrote: >>>>> Won't it also break a guest which is just Linux loaded not via >>>>> firmware which is an aarch32 kernel without LPAE support? >>>> >>>> Does such a thing exist? (I honestly have no clue.) >>> >>> Yes, it does; LPAE isn't a mandatory kernel config option. >>> This is why we have the machine 'highmem' option, so that >>> we can run on those kernels by not putting anything above >>> the 4G boundary. Looking back at the history on that, we >>> opted at the time for "default to highmem on, and if you're >>> running an non-lpae kernel you need to turn it off manually". >> >> Ah, OK, I didn't know that. >> >>> So we can handle those kernels by just not putting ECAM >>> above 4G if highmem is false. >> >> The problem is we can have a combination of 32-bit UEFI firmware (which >> certainly lacks LPAE) and a 32-bit kernel which supports LPAE. > > Is it what happens with the FW you provided to me? There is no LPAE in it?
That's the case, to my knowledge. Thanks Laszlo
