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Re: QEMU 32-bit vs. 64-bit binaries

From: Thomas Huth
Subject: Re: QEMU 32-bit vs. 64-bit binaries
Date: Tue, 10 May 2022 11:01:02 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0

On 10/05/2022 10.54, Markus Armbruster wrote:
Thomas Huth <thuth@redhat.com> writes:


I once suggested in the past already that we should maybe get rid of
the 32-bit variants in case the 64-bit variant is a full superset, so
we can save compile- and test times (which is quite a bit for QEMU),
but I've been told that the 32-bit variants are mostly still required
for supporting KVM on 32-bit host machines.

Do we still care for 32-bit host machines?

As long as the Linux kernel still supports 32-bit KVM virtualization, I think we have to keep the userspace around for that, too.

But I wonder why we're keeping qemu-system-arm around? 32-bit KVM support for ARM has been removed with Linux kernel 5.7 as far as I know, so I think we could likely drop the qemu-system-arm nowadays, too? Peter, Richard, what's your opinion on this?


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