From: Peter Xu <peterx@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH] KVM: add missing compat KVM_CLEAR_DIRTY_LOG
Date: Tue, 27 Jul 2021 11:46:12 -0400 [thread overview]
Message-ID: <YQAqRB7OPHHQNdJ+@t490s> (raw)
In-Reply-To: <20210727124901.1466039-1-pbonzini@redhat.com>
On Tue, Jul 27, 2021 at 08:49:01AM -0400, Paolo Bonzini wrote:
> The arguments to the KVM_CLEAR_DIRTY_LOG ioctl include a pointer,
> therefore it needs a compat ioctl implementation. Otherwise,
> 32-bit userspace fails to invoke it on 64-bit kernels; for x86
> it might work fine by chance if the padding is zero, but not
> on big-endian architectures.
>
> Reported-by: Thomas Sattler
> Cc: stable@vger.kernel.org
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
--
Peter Xu
prev parent reply other threads:[~2021-07-27 15:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 12:49 [PATCH] KVM: add missing compat KVM_CLEAR_DIRTY_LOG Paolo Bonzini
2021-07-27 15:46 ` Peter Xu [this message]
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