Re: [PATCH] efi/arm: enable CP15 DMB instructions before cleaning the cache

2019-03-30 Thread Ard Biesheuvel
On Sat, 30 Mar 2019 at 10:50, Marc Zyngier wrote: > > Hi Ard, > > On Fri, 29 Mar 2019 18:24:18 +, > Ard Biesheuvel wrote: > > > > The EFI stub is entered with the caches and MMU enabled by the > > firmware, and once the stub is ready to hand over to the decompressor, > > we clean and disable

Re: [PATCH] efi/arm: enable CP15 DMB instructions before cleaning the cache

2019-03-30 Thread Marc Zyngier
Hi Ard, On Fri, 29 Mar 2019 18:24:18 +, Ard Biesheuvel wrote: > > The EFI stub is entered with the caches and MMU enabled by the > firmware, and once the stub is ready to hand over to the decompressor, > we clean and disable the caches. > > The cache clean routines use CP15 barrier