lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 7 Jan 2020 11:05:22 -0800 From: Sean Christopherson <sean.j.christopherson@...el.com> To: Barret Rhoden <brho@...gle.com> Cc: Liran Alon <liran.alon@...cle.com>, Paolo Bonzini <pbonzini@...hat.com>, Dan Williams <dan.j.williams@...el.com>, David Hildenbrand <david@...hat.com>, Dave Jiang <dave.jiang@...el.com>, Alexander Duyck <alexander.h.duyck@...ux.intel.com>, linux-nvdimm@...ts.01.org, x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, jason.zeng@...el.com Subject: Re: [PATCH v5 2/2] kvm: Use huge pages for DAX-backed files On Mon, Dec 16, 2019 at 11:05:26AM -0500, Barret Rhoden wrote: > On 12/13/19 12:19 PM, Sean Christopherson wrote: > >Teaching thp_adjust() how to handle 1GB wouldn't be a bad thing. It's > >unlikely THP itself will support 1GB pages any time soon, but having the > >logic there wouldn't hurt anything. > > > > Cool. This was my main concern - I didn't want to break THP. > > I'll rework the series based on all of your comments. Hopefully you haven't put too much effort into the rework, because I want to commandeer the proposed changes and use them as the basis for a more aggressive overhaul of KVM's hugepage handling. Ironically, there's a bug in KVM's THP handling that I _think_ can be avoided by using the DAX approach of walking the host PTEs. I'm in the process of testing, hopefully I'll get a series sent out later today. If not, I should at least be able to provide an update.
Powered by blists - more mailing lists