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From: Dave Martin <Dave.Martin@arm.com>
To: Kristina Martsenko <kristina.martsenko@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	Marc Zyngier <marc.zyngier@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	kvmarm@lists.cs.columbia.edu,
	Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 9/10] KVM: arm64: docs: document KVM support of pointer authentication
Date: Wed, 27 Mar 2019 10:44:29 +0000	[thread overview]
Message-ID: <20190327104428.GV3567@e103592.cambridge.arm.com> (raw)
In-Reply-To: <23e4a9d4-e9e1-2c1f-32ce-e7fd96080437@arm.com>

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@arm.com>
> > Cc: Mark Rutland <mark.rutland@arm.com>
> > Cc: Christoffer Dall <christoffer.dall@arm.com>
> > Cc: Marc Zyngier <marc.zyngier@arm.com>
> > Cc: kvmarm@lists.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

  reply	other threads:[~2019-03-27 10:44 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-19  8:30 [PATCH v7 0/10] Add ARMv8.3 pointer authentication for kvm guest Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 1/10] KVM: arm64: Propagate vcpu into read_id_reg() Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 2/10] KVM: arm64: Support runtime sysreg visibility filtering Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 3/10] KVM: arm64: Move hyp_symbol_addr to fix dependency Amit Daniel Kachhap
2019-03-20  8:49   ` Julien Thierry
2019-03-21  5:29     ` Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 4/10] KVM: arm/arm64: preserve host HCR_EL2 value Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 5/10] KVM: arm/arm64: preserve host MDCR_EL2 value Amit Daniel Kachhap
2019-03-25 20:04   ` Kristina Martsenko
2019-03-26  3:55     ` Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 6/10] KVM: arm64: Add vcpu feature flags to control ptrauth accessibility Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 7/10] KVM: arm/arm64: context-switch ptrauth registers Amit Daniel Kachhap
2019-03-20 12:13   ` Julien Thierry
2019-03-21  6:08     ` Amit Daniel Kachhap
2019-03-21  8:29       ` Julien Thierry
2019-03-25 20:04   ` Kristina Martsenko
2019-03-26  4:03     ` Amit Daniel Kachhap
2019-03-26 18:01       ` Kristina Martsenko
2019-03-27  3:21         ` Amit Daniel Kachhap
2019-03-27 18:16           ` James Morse
2019-03-28 11:29             ` Amit Daniel Kachhap
2019-03-28 18:51   ` James Morse
2019-03-29  5:54     ` Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 8/10] KVM: arm64: Add capability to advertise ptrauth for guest Amit Daniel Kachhap
2019-03-25 20:05   ` Kristina Martsenko
2019-03-26  4:12     ` Amit Daniel Kachhap
2019-03-19  8:30 ` [PATCH v7 9/10] KVM: arm64: docs: document KVM support of pointer authentication Amit Daniel Kachhap
2019-03-20 13:37   ` Julien Thierry
2019-03-20 15:04     ` Kristina Martsenko
2019-03-20 18:06       ` Julien Thierry
2019-03-20 20:56         ` Kristina Martsenko
2019-03-21  6:41           ` Amit Daniel Kachhap
2019-03-25 20:05   ` Kristina Martsenko
2019-03-27 10:44     ` Dave Martin [this message]
2019-03-27 11:49       ` Amit Daniel Kachhap
2019-03-27 13:50         ` Dave Martin
2019-03-28 10:13           ` Amit Daniel Kachhap
2019-03-19  8:30 ` [kvmtool PATCH v7 10/10] KVM: arm/arm64: Add a vcpu feature for " Amit Daniel Kachhap

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