Re: [PATCH 1/6] arm64/vdso: use the fault callback to map vvar pages

2020-07-26 Thread Andrei Vagin
On Fri, Jul 24, 2020 at 06:26:23PM +0100, Catalin Marinas wrote: > On Wed, 24 Jun 2020 01:33:16 -0700, Andrei Vagin wrote: > > Currently the vdso has no awareness of time namespaces, which may > > apply distinct offsets to processes in different namespaces. To handle > > this within the vdso, we'll

Re: [PATCH 1/6] arm64/vdso: use the fault callback to map vvar pages

2020-07-24 Thread Catalin Marinas
On Wed, 24 Jun 2020 01:33:16 -0700, Andrei Vagin wrote: > Currently the vdso has no awareness of time namespaces, which may > apply distinct offsets to processes in different namespaces. To handle > this within the vdso, we'll need to expose a per-namespace data page. > > As a preparatory step, th

Re: [PATCH 1/6] arm64/vdso: use the fault callback to map vvar pages

2020-06-18 Thread Andrei Vagin
On Tue, Jun 16, 2020 at 11:59:20AM +0100, Mark Rutland wrote: > On Tue, Jun 16, 2020 at 12:55:40AM -0700, Andrei Vagin wrote: > > This is required to support time namespaces where a time namespace data > > page is different for each namespace. > > Can you please give a bit more of an introduction

Re: [PATCH 1/6] arm64/vdso: use the fault callback to map vvar pages

2020-06-16 Thread Mark Rutland
On Tue, Jun 16, 2020 at 12:55:40AM -0700, Andrei Vagin wrote: > This is required to support time namespaces where a time namespace data > page is different for each namespace. Can you please give a bit more of an introduction to the changes here? As-is, this doesn't give reviewers the necessary co