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Date: Wed, 20 Oct 2021 18:28:49 -0500 From: "Gustavo A. R. Silva" <gustavoars@...nel.org> To: "Gustavo A. R. Silva" <gustavo@...eddedor.com> Cc: Len Baker <len.baker@....com>, Paul Mackerras <paulus@...abs.org>, Michael Ellerman <mpe@...erman.id.au>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Kees Cook <keescook@...omium.org>, kvm-ppc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] KVM: PPC: Replace zero-length array with flexible array member On Mon, Sep 20, 2021 at 07:05:07PM -0500, Gustavo A. R. Silva wrote: > > > On 9/18/21 09:21, Len Baker wrote: > > There is a regular need in the kernel to provide a way to declare having > > a dynamically sized set of trailing elements in a structure. Kernel code > > should always use "flexible array members" [1] for these cases. The > > older style of one-element or zero-length arrays should no longer be > > used[2]. > > > > Also, make use of the struct_size() helper in kzalloc(). > > > > [1] https://en.wikipedia.org/wiki/Flexible_array_member > > [2] https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays > > > > Signed-off-by: Len Baker <len.baker@....com> > > Reviewed-by: Gustavo A. R. Silva <gustavoars@...nel.org> I'm taking this in my -next tree. Thanks -- Gustavo
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