Re: [PATCH] x86/mm: Pre-allocate p4d/pud pages for vmalloc area

[Peter Zijlstra]

On Fri, Jun 26, 2020 at 01:31:01PM +0200, Peter Zijlstra wrote:
> On Fri, Jun 26, 2020 at 01:17:11PM +0200, Joerg Roedel wrote:
> > On Fri, Jun 26, 2020 at 01:07:31PM +0200, Peter Zijlstra wrote:
> > > Can't we now remove arch_sync_kernel_mappings() from this same file?
> > 
> > Only if we panic on allocation failure.
> 
> I think we do that in plenty places already, so sure ;-)

That is, this is boot time only, right? clone() would return -ENOMEM, as
it's part of the normal page-table copy.