On Tue, Feb 02, 2021 at 09:54:36AM +0000, Nadav Amit wrote: > > On Feb 2, 2021, at 1:31 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > > > On Tue, Feb 02, 2021 at 07:20:55AM +0000, Nadav Amit wrote: > >> Arm does not define tlb_end_vma, and consequently it flushes the TLB after > >> each VMA. I suspect it is not intentional. > > > > ARM is one of those that look at the VM_EXEC bit to explicitly flush > > ITLB IIRC, so it has to. > > Hmm… I don’t think Arm is doing that. At least arm64 does not use the > default tlb_flush(), and it does not seem to consider VM_EXEC (at least in > this path): > ARM != ARM64. ARM certainly does, but you're right, I don't think ARM64 does this.
