linux-kernel - Re: [PATCH kvm-next V11 7/7] KVM: guest_memfd: selftests: Add tests for mmap and NUMA policy support

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Message-ID: <aNXMdSZkqDtsGRLm@google.com>
Date: Thu, 25 Sep 2025 16:12:53 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Jason Gunthorpe <jgg@...dia.com>
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Subject: Re: [PATCH kvm-next V11 7/7] KVM: guest_memfd: selftests: Add tests
 for mmap and NUMA policy support

On Thu, Sep 25, 2025, Jason Gunthorpe wrote:
> On Thu, Sep 25, 2025 at 02:35:19PM -0700, Sean Christopherson wrote:
> > >  LDLIBS += -ldl
> > > +LDLIBS += -lnuma
> > 
> > Hrm, this is going to be very annoying.  I don't have libnuma-dev installed on
> > any of my <too many> systems, and I doubt I'm alone.  Installing the package is
> > trivial, but I'm a little wary of foisting that requirement on all KVM developers
> > and build bots.
> 
> Wouldn't it be great if the kselftest build system used something like
> meson and could work around these little issues without breaking the
> whole build ? :(
> 
> Does anyone else think this?
> 
> Every time I try to build kselftsts I just ignore all the errors the
> fly by because the one bit I wanted did build properly anyhow.

I'm indifferent, as I literally never build all of kselftests, I just build KVM
selftests.  But I'm probably in the minority for the kernel overall.