linux-kernel - Re: [PATCH 34/34] KVM: selftests: Add a memory region subtest to validate invalid flags

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Date:   Wed, 8 Nov 2023 17:08:01 -0800
From:   Anish Moorthy <amoorthy@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Huacai Chen <chenhuacai@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Anup Patel <anup@...infault.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Sean Christopherson <seanjc@...gle.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>, kvm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Xiaoyao Li <xiaoyao.li@...el.com>,
        Xu Yilun <yilun.xu@...el.com>,
        Chao Peng <chao.p.peng@...ux.intel.com>,
        Fuad Tabba <tabba@...gle.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        David Matlack <dmatlack@...gle.com>,
        Yu Zhang <yu.c.zhang@...ux.intel.com>,
        Isaku Yamahata <isaku.yamahata@...el.com>,
        Mickaël Salaün <mic@...ikod.net>,
        Vlastimil Babka <vbabka@...e.cz>,
        Vishal Annapurve <vannapurve@...gle.com>,
        Ackerley Tng <ackerleytng@...gle.com>,
        Maciej Szmigiero <mail@...iej.szmigiero.name>,
        David Hildenbrand <david@...hat.com>,
        Quentin Perret <qperret@...gle.com>,
        Michael Roth <michael.roth@....com>,
        Wang <wei.w.wang@...el.com>,
        Liam Merwick <liam.merwick@...cle.com>,
        Isaku Yamahata <isaku.yamahata@...il.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: Re: [PATCH 34/34] KVM: selftests: Add a memory region subtest to
 validate invalid flags

Applying [1] and [2] reveals that this also breaks non-x86 builds- the
MEM_REGION_GPA/SLOT definitions are guarded behind an #ifdef
__x86_64__, while the usages introduced here aren't.

Should

On Sun, Nov 5, 2023 at 8:35 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> +       test_invalid_memory_region_flags();

be #ifdef'd, perhaps? I'm not quite sure what the intent is.

Side note: I wasn't able to get [2] to apply by copy-pasting the diff
and trying "git apply", and that was after checking out the relevant
commit. Eventually I just did it manually. If anyone can successfully
apply it, please let me know what you did so I can see what I was
doing wrong :)

[1] https://lore.kernel.org/kvm/20231108233723.3380042-1-amoorthy@google.com/
[2] https://lore.kernel.org/kvm/affca7a8-116e-4b0f-9edf-6cdc05ba65ca@redhat.com/