linux-kernel - Re: [PATCH 22/24] uaccess: add memzero

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Message-ID: <f08c1176-ed24-f578-5b81-360b1b28942c@redhat.com>
Date:   Wed, 20 May 2020 23:33:37 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     Christoph Hellwig <hch@...radead.org>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        vkuznets@...hat.com, Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 22/24] uaccess: add memzero_user

On 20/05/20 23:28, Al Viro wrote:
> Unless I'm seriously misreading that patch, it could've been done as
> 
> static inline __must_check int memzero_user(void __user *addr, size_t size)
> {
> 	return clear_user(addr, n) ? -EFAULT : 0;
> }
> 
> What am I missing?

Ok, I have a serious tunnel vision problem.  Thanks very much Al.

Since I have your attention, would you take a look at
https://lore.kernel.org/lkml/20200421135119.30007-1-eesposit@redhat.com/
please?

Thanks,

Paolo