On Friday, September 27, 2019 8:01:42 AM MST Daniel P. Berrangé wrote:
On Fri, Sep 27, 2019 at 10:53:32AM -0400, Neal Gompa wrote:
On Fri, Sep 27, 2019 at 8:30 AM Daniel P. Berrangé berrange@redhat.com wrote:
On Fri, Sep 27, 2019 at 01:26:09PM +0200, Jun Aruga wrote:
Does anyone know of, or have, any critical/important use cases that would
be disrupted by QEMU dropping 32-bit *host* support ? If so, let me know here & I can forward feedback on. Or feel free to go direct to QEMU thread upstream.
I am not a real user of ARM 32-bit. I just checked information for ARM 32-bit (armv7) use cases.
## Raspberry Pi
https://en.wikipedia.org/wiki/Raspberry_Pi The earlier V1.1 model of the Raspberry Pi 2 used a Broadcom BCM2836 SoC with a 900 MHz 32-bit, quad-core ARM Cortex-A7 processor, with 256 KB shared L2 cache.
It seems that the version 1.1 is the last model for 32-bit, and the announcement was 5 August 2015. I assume a considerable number of people using ARM 32-bit Raspberry Pi.
Right, but I'm rather sceptical that people are running QEMU on the 32-bit RPi boards. I might be less surprised about the Linux userspace emulation being used, vs full VM, since the former is lower overhead.
Sorry to burst your bubble, but since the Raspberry Pi performs quite badly as a 64-bit device for the moment, I've used it with Fedora armv7hl instead of aarch64. I personally use the user emulation mostly, but I know of a couple of cases where system emulation is used (mainly for buildsys stuff).
Interesting, is there a particular reason why you run the emulation on a Pi, as opposed to using more powerful x86 hardware for it ? I'm not saying you're wrong todo this, just trying to understand the motivation people have.
Regards, Daniel --
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Perhaps the same reason that many people still run i686 based hardware, and will be unable to use Fedora after the release of F31: Why fix what isn't broken?
- - John M. Harris, Jr. Splentity