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, 18 Feb 2020 10:51:17 -0800 From: Florian Fainelli <f.fainelli@...il.com> To: Rob Herring <robh@...nel.org>, Andre Przywara <andre.przywara@....com> Cc: Mark Langsdorf <mlangsdo@...hat.com>, kvm@...r.kernel.org, Viresh Kumar <viresh.kumar@...aro.org>, "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" <linux-ide@...r.kernel.org>, Will Deacon <will@...nel.org>, linux-clk <linux-clk@...r.kernel.org>, soc@...nel.org, Joerg Roedel <joro@...tes.org>, Daniel Lezcano <daniel.lezcano@...aro.org>, devicetree@...r.kernel.org, Jon Loeliger <jdl@....com>, "open list:THERMAL" <linux-pm@...r.kernel.org>, Eric Auger <eric.auger@...hat.com>, Alex Williamson <alex.williamson@...hat.com>, Tony Luck <tony.luck@...el.com>, Alexander Graf <graf@...zon.com>, Mauro Carvalho Chehab <mchehab@...nel.org>, "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>, linux-edac <linux-edac@...r.kernel.org>, Jens Axboe <axboe@...nel.dk>, Matthias Brugger <mbrugger@...e.com>, Stephen Boyd <sboyd@...nel.org>, netdev <netdev@...r.kernel.org>, Cornelia Huck <cohuck@...hat.com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Linux IOMMU <iommu@...ts.linux-foundation.org>, Robert Richter <rrichter@...vell.com>, James Morse <james.morse@....com>, Borislav Petkov <bp@...en8.de>, Robin Murphy <robin.murphy@....com>, "David S. Miller" <davem@...emloft.net> Subject: Re: [RFC PATCH 00/11] Removing Calxeda platform support On 2/18/20 10:40 AM, Rob Herring wrote: > On Tue, Feb 18, 2020 at 12:14 PM Andre Przywara <andre.przywara@....com> wrote: >> >> On Tue, 18 Feb 2020 11:13:10 -0600 >> Rob Herring <robh@...nel.org> wrote: >> >> Hi, >> >>> Calxeda has been defunct for 6 years now. Use of Calxeda servers carried >>> on for some time afterwards primarily as distro builders for 32-bit ARM. >>> AFAIK, those systems have been retired in favor of 32-bit VMs on 64-bit >>> hosts. >>> >>> The other use of Calxeda Midway I'm aware of was testing 32-bit ARM KVM >>> support as there are few or no other systems with enough RAM and LPAE. Now >>> 32-bit KVM host support is getting removed[1]. >>> >>> While it's not much maintenance to support, I don't care to convert the >>> Calxeda DT bindings to schema nor fix any resulting errors in the dts files >>> (which already don't exactly match what's shipping in firmware). >> >> While every kernel maintainer seems always happy to take patches with a negative diffstat, I wonder if this is really justification enough to remove a perfectly working platform. I don't really know about any active users, but experience tells that some platforms really are used for quite a long time, even if they are somewhat obscure. N900 or Netwinder, anyone? >> >> So to not give the impression that actually *everyone* (from that small subset of people actively reading the kernel list) is happy with that, I think that having support for at least Midway would be useful. On the one hand it's a decent LPAE platform (with memory actually exceeding 4GB), and on the other hand it's something with capable I/O (SATA) and networking, so one can actually stress test the system. Which is the reason I was using that for KVM testing, but even with that probably going away now there remain still some use cases, and be it for general ARM(32) testing. > > Does LPAE with more than 4GB actually need to work if there's not > another platform out there? There are ARCH_BRCMSTB platforms that are 32-bit only and have 6GB of DRAM populated, and those continue to work just fine, though there is no known use for KVM AFAICT. -- Florian
Powered by blists - more mailing lists