From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Sean Christopherson <seanjc@google.com>,
Marc Zyngier <maz@kernel.org>, Oliver Upton <oupton@kernel.org>,
Tianrui Zhao <zhaotianrui@loongson.cn>,
Bibo Mao <maobibo@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Anup Patel <anup@brainfault.org>, Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
kvm@vger.kernel.org, loongarch@lists.linux.dev,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Gustavo A . R . Silva" <gustavoars@kernel.org>
Subject: Re: [PATCH] KVM: Remove subtle "struct kvm_stats_desc" pseudo-overlay
Date: Sat, 6 Dec 2025 12:38:14 +0900 [thread overview]
Message-ID: <0018d1c0-58ec-4b31-b016-472795990923@embeddedor.com> (raw)
In-Reply-To: <20251205232655.445294-1-seanjc@google.com>
On 12/6/25 08:26, Sean Christopherson wrote:
> Remove KVM's internal pseudo-overlay of kvm_stats_desc, which subtly
> aliases the flexible name[] in the uAPI definition with a fixed-size array
> of the same name. The unusual embedded structure results in compiler
> warnings due to -Wflex-array-member-not-at-end, and also necessitates an
> extra level of dereferencing in KVM. To avoid the "overlay", define the
> uAPI structure to have a fixed-size name when building for the kernel.
Nice. Thanks for this.
>
> Opportunistically clean up the indentation for the stats macros, and
> replace spaces with tabs.
>
> No functional change intended.
>
> Reported-by: Gustavo A. R. Silva <gustavoars@kernel.org>
> Closes: https://lore.kernel.org/all/aPfNKRpLfhmhYqfP@kspp
> Signed-off-by: Sean Christopherson <seanjc@google.com>
Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org>
-Gustavo
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next prev parent reply other threads:[~2025-12-06 3:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-05 23:26 [PATCH] KVM: Remove subtle "struct kvm_stats_desc" pseudo-overlay Sean Christopherson
2025-12-06 3:38 ` Gustavo A. R. Silva [this message]
2025-12-06 8:16 ` Bibo Mao
2025-12-07 5:14 ` Anup Patel
2025-12-08 10:32 ` Christian Borntraeger
2025-12-08 10:42 ` Marc Zyngier
2026-01-12 17:38 ` Sean Christopherson
2026-03-24 6:07 ` patchwork-bot+linux-riscv
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