RE: [PATCH 3/3] arm64: mmu: pgd_pgtable_alloc: drop barrier

2019-02-13 Thread Peng Fan
@arm.com; > linux-arm-ker...@lists.infradead.org; linux-kernel@vger.kernel.org; > van.free...@gmail.com > Subject: Re: [PATCH 3/3] arm64: mmu: pgd_pgtable_alloc: drop barrier > > On Wed, Feb 13, 2019 at 09:37:38AM +, Peng Fan wrote: > > The barriers are added for empty_zero

Re: [PATCH 3/3] arm64: mmu: pgd_pgtable_alloc: drop barrier

2019-02-13 Thread Mark Rutland
On Wed, Feb 13, 2019 at 09:37:38AM +, Peng Fan wrote: > The barriers are added for empty_zero_page, however the > empty zero page has been moved to bss area by > commit 5227cfa71f9e ("arm64: mm: place empty_zero_page in bss"), > and it alreay added "dsb ishst" in head.S to make sure > the e