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Date: Wed, 27 Mar 2019 10:44:29 +0000 From: Dave Martin <Dave.Martin@....com> To: Kristina Martsenko <kristina.martsenko@....com> Cc: Amit Daniel Kachhap <amit.kachhap@....com>, linux-arm-kernel@...ts.infradead.org, Marc Zyngier <marc.zyngier@....com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, kvmarm@...ts.cs.columbia.edu, Ramana Radhakrishnan <ramana.radhakrishnan@....com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH v7 9/10] KVM: arm64: docs: document KVM support of pointer authentication On Mon, Mar 25, 2019 at 08:05:49PM +0000, Kristina Martsenko wrote: > On 19/03/2019 08:30, Amit Daniel Kachhap wrote: > > This adds sections for KVM API extension for pointer authentication. > > A brief description about usage of pointer authentication for KVM guests > > is added in the arm64 documentations. > > > > Signed-off-by: Amit Daniel Kachhap <amit.kachhap@....com> > > Cc: Mark Rutland <mark.rutland@....com> > > Cc: Christoffer Dall <christoffer.dall@....com> > > Cc: Marc Zyngier <marc.zyngier@....com> > > Cc: kvmarm@...ts.cs.columbia.edu > > I think it makes sense to also update the Kconfig symbol description for > CONFIG_ARM64_PTR_AUTH, since it currently only mentions userspace > support, but now the option also enables KVM guest support. > > It's also worth mentioning that CONFIG_ARM64_VHE=y is required for guest > support. Is it worth making this dependency explicit in Kconfig? For SVE, I have config ARM64_SVE depends on !KVM || ARM64_VHE to implement this. Cheers ---Dave
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