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Date: Mon, 23 Oct 2017 12:40:58 -0700
From: Kees Cook <>
To: Paolo Bonzini <>
Cc: Christoffer Dall <>, Christoffer Dall <>,, 
	"" <>, KVM <>, 
	"" <>, 
	Radim Krčmář <>, 
	Marc Zyngier <>
Subject: Re: [PATCH] KVM: arm/arm64: Allow usercopy to vcpu->arch.ctxt and
 arm64 debug

On Mon, Oct 23, 2017 at 7:14 AM, Paolo Bonzini <> wrote:
> On 22/10/2017 09:44, Christoffer Dall wrote:
>> However, I think it's much clearer if I
>> rewrite these to use get_user() and put_user().  v2 incoming.
> I'd actually prefer if you all do a trivial conversion to
> kvm_init_usercopy to begin with.  In fact, we could just change the
> default from "0, 0" to "0, sizeof (kvm_arch_vcpu)" in kvm_init.  Any
> other change can be applied after the patches are merged to Linus's
> tree, especially with KVM Forum and the merge window both coming soon.
> I'll send a v2 myself later this week.

Okay, which patches would you like me to carry in the usercopy
whitelisting tree for the coming merge window?


Kees Cook
Pixel Security

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