Date: Mon, 23 Oct 2017 12:40:58 -0700 From: Kees Cook <keescook@...omium.org> To: Paolo Bonzini <pbonzini@...hat.com> Cc: Christoffer Dall <cdall@...aro.org>, Christoffer Dall <christoffer.dall@...aro.org>, kvmarm@...ts.cs.columbia.edu, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, KVM <kvm@...r.kernel.org>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Radim Krčmář <rkrcmar@...hat.com>, Marc Zyngier <marc.zyngier@....com> 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 <pbonzini@...hat.com> 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 -- Kees Cook Pixel Security
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