linux-kernel - Re: [PATCH] aic7xxx/aic79xx: remove VLAs

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Date:   Thu, 8 Mar 2018 21:50:19 +0100
From:   Stephen Kitt <steve@....org>
To:     Kees Cook <keescook@...omium.org>
Cc:     hare <hare@...e.com>, linux-scsi@...r.kernel.org,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] aic7xxx/aic79xx: remove VLAs

On Thu, 8 Mar 2018 11:52:25 -0800, Kees Cook <keescook@...omium.org> wrote:
> On Thu, Mar 8, 2018 at 5:22 AM, Stephen Kitt <steve@....org> wrote:
> > -static const int num_critical_sections = sizeof(critical_sections)
> > -                                      / sizeof(*critical_sections);
> > +#define NUM_CRITICAL_SECTIONS 14  
> 
> The compiler doesn't treat "const" as a literal, hence the need to
> change this. However, you can still use the sizeof (actually, this is
> exactly ARRAY_SIZE()). Perhaps:
> 
> #define NUM_CRITICAL_SECTIONS ARRAY_SIZE(critical_sections)
> 
> ?
> 
> Otherwise, looks great!

Thanks, v2 incoming...

Regards,

Stephen

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