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Re: [PATCH 0/1] Allow to build virtiofsd without the entire tools

From: Paolo Bonzini
Subject: Re: [PATCH 0/1] Allow to build virtiofsd without the entire tools
Date: Tue, 2 Feb 2021 00:04:23 +0100

Il lun 1 feb 2021, 22:15 Wainer dos Santos Moschetta <wainersm@redhat.com> ha scritto:
Not too long ago (QEMU 5.0) it was possible to configure with --disable-tools
and still have virtiofsd built. With the recent port of the build system to
Meson, it is now built together with the tools though.

The Kata Containers [1] project build QEMU with --disable-tools to decrease the
attack surface

---enable-tools only adds separate executables, therefore it can't add to the attack surface of the emulators. So this is misleading.

That said, it does make sense to let --enable-virtiofsd override --disable-tools, and the same in the other direction too.


Side note: in a private chat with Stefan Hajnoczi he come up with the idea
that perhaps --disable-tools could be like --without-default-features where
one can add back on feature-by-feature basis. This is outside the scope of this
series but I thought in sharing because IMHO it is deserves a discussion.

[1] https://katacontainers.io

Wainer dos Santos Moschetta (1):
  virtiofsd: Allow to build it without the tools

 tools/meson.build | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)


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