linux-kernel - Re: [PATCH v2 1/4] kexec: simplify compat_sys_kexec

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Date:   Tue, 3 Nov 2020 08:35:33 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     linux-arch@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Christoph Hellwig <hch@...radead.org>,
        Eric Biederman <ebiederm@...ssion.com>,
        Ingo Molnar <mingo@...nel.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, kexec@...ts.infradead.org
Subject: Re: [PATCH v2 1/4] kexec: simplify compat_sys_kexec_load

> +	for (i=0; i < nr_segments; i++) {

Missing spaces around the "=".

> +SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments,
> +		struct kexec_segment __user *, segments, unsigned long, flags)
> +{
> +	return kernel_kexec_load(entry, nr_segments, segments, flags);
> +}
> +
>  #ifdef CONFIG_COMPAT
>  COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry,
>  		       compat_ulong_t, nr_segments,
>  		       struct compat_kexec_segment __user *, segments,
>  		       compat_ulong_t, flags)
>  {
> +	return kernel_kexec_load(entry, nr_segments,
> +				 (struct kexec_segment __user *)segments,
> +				 flags);
>  }

I don't think we need sys_compat_kexec_load at all now, all the syscall
tables can simply switch to sys_kexec_load for the compat case as well
now.