From: Amit Daniel Kachhap <amit.kachhap@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Christoffer Dall <christoffer.dall@arm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Andrew Jones <drjones@redhat.com>,
Dave Martin <Dave.Martin@arm.com>,
Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>,
kvmarm@lists.cs.columbia.edu,
Kristina Martsenko <kristina.martsenko@arm.com>,
linux-kernel@vger.kernel.org,
Amit Daniel Kachhap <amit.kachhap@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry@arm.com>
Subject: [PATCH v10 1/5] KVM: arm64: Add a vcpu flag to control ptrauth for guest
Date: Tue, 23 Apr 2019 10:12:34 +0530 [thread overview]
Message-ID: <1555994558-26349-2-git-send-email-amit.kachhap@arm.com> (raw)
In-Reply-To: <1555994558-26349-1-git-send-email-amit.kachhap@arm.com>
A per vcpu flag is added to check if pointer authentication is
enabled for the vcpu or not. This flag may be enabled according to
the necessary user policies and host capabilities.
This patch also adds a helper to check the flag.
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
---
Changes since v9:
* Added ptrauth cpufeature static check in vcpu_has_ptrauth [Marc Zyngier].
arch/arm64/include/asm/kvm_host.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 7a096fd..7ccac42 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -355,10 +355,15 @@ struct kvm_vcpu_arch {
#define KVM_ARM64_HOST_SVE_ENABLED (1 << 4) /* SVE enabled for EL0 */
#define KVM_ARM64_GUEST_HAS_SVE (1 << 5) /* SVE exposed to guest */
#define KVM_ARM64_VCPU_SVE_FINALIZED (1 << 6) /* SVE config completed */
+#define KVM_ARM64_GUEST_HAS_PTRAUTH (1 << 7) /* PTRAUTH exposed to guest */
#define vcpu_has_sve(vcpu) (system_supports_sve() && \
((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_SVE))
+#define vcpu_has_ptrauth(vcpu) ((system_supports_address_auth() || \
+ system_supports_generic_auth()) && \
+ ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_PTRAUTH))
+
#define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs)
/*
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Amit Daniel Kachhap <amit.kachhap@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Marc Zyngier <marc.zyngier@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Kristina Martsenko <kristina.martsenko@arm.com>,
kvmarm@lists.cs.columbia.edu,
Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>,
Amit Daniel Kachhap <amit.kachhap@arm.com>,
Dave Martin <Dave.Martin@arm.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v10 1/5] KVM: arm64: Add a vcpu flag to control ptrauth for guest
Date: Tue, 23 Apr 2019 10:12:34 +0530 [thread overview]
Message-ID: <1555994558-26349-2-git-send-email-amit.kachhap@arm.com> (raw)
Message-ID: <20190423044234.G9jC_eys88fRJo2dEpHVB-LBmqaySJAYs08ia-125zg@z> (raw)
In-Reply-To: <1555994558-26349-1-git-send-email-amit.kachhap@arm.com>
A per vcpu flag is added to check if pointer authentication is
enabled for the vcpu or not. This flag may be enabled according to
the necessary user policies and host capabilities.
This patch also adds a helper to check the flag.
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
---
Changes since v9:
* Added ptrauth cpufeature static check in vcpu_has_ptrauth [Marc Zyngier].
arch/arm64/include/asm/kvm_host.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 7a096fd..7ccac42 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -355,10 +355,15 @@ struct kvm_vcpu_arch {
#define KVM_ARM64_HOST_SVE_ENABLED (1 << 4) /* SVE enabled for EL0 */
#define KVM_ARM64_GUEST_HAS_SVE (1 << 5) /* SVE exposed to guest */
#define KVM_ARM64_VCPU_SVE_FINALIZED (1 << 6) /* SVE config completed */
+#define KVM_ARM64_GUEST_HAS_PTRAUTH (1 << 7) /* PTRAUTH exposed to guest */
#define vcpu_has_sve(vcpu) (system_supports_sve() && \
((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_SVE))
+#define vcpu_has_ptrauth(vcpu) ((system_supports_address_auth() || \
+ system_supports_generic_auth()) && \
+ ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_PTRAUTH))
+
#define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs)
/*
--
2.7.4
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next prev parent reply other threads:[~2019-04-23 4:42 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-23 4:42 [PATCH v10 0/5] Add ARMv8.3 pointer authentication for kvm guest Amit Daniel Kachhap
2019-04-23 4:42 ` Amit Daniel Kachhap
2019-04-23 4:42 ` Amit Daniel Kachhap [this message]
2019-04-23 4:42 ` [PATCH v10 1/5] KVM: arm64: Add a vcpu flag to control ptrauth for guest Amit Daniel Kachhap
2019-04-23 15:44 ` Dave Martin
2019-04-23 15:44 ` Dave Martin
2019-04-24 5:57 ` Amit Daniel Kachhap
2019-04-24 5:57 ` Amit Daniel Kachhap
2019-04-24 13:42 ` Dave Martin
2019-04-24 13:42 ` Dave Martin
2019-04-23 4:42 ` [PATCH v10 2/5] KVM: arm/arm64: context-switch ptrauth registers Amit Daniel Kachhap
2019-04-23 4:42 ` Amit Daniel Kachhap
2019-04-23 9:39 ` Marc Zyngier
2019-04-23 9:39 ` Marc Zyngier
2019-04-23 10:24 ` Amit Daniel Kachhap
2019-04-23 10:24 ` Amit Daniel Kachhap
2019-04-23 15:44 ` Dave Martin
2019-04-23 15:44 ` Dave Martin
2019-04-24 10:29 ` Marc Zyngier
2019-04-24 10:29 ` Marc Zyngier
2019-04-24 13:40 ` Dave Martin
2019-04-24 13:40 ` Dave Martin
2019-04-24 13:39 ` Dave Martin
2019-04-24 13:39 ` Dave Martin
2019-04-24 14:29 ` Marc Zyngier
2019-04-24 14:29 ` Marc Zyngier
2019-04-24 14:30 ` Dave P Martin
2019-04-24 14:30 ` Dave P Martin
2019-04-23 4:42 ` [PATCH v10 3/5] KVM: arm64: Add userspace flag to enable pointer authentication Amit Daniel Kachhap
2019-04-23 4:42 ` Amit Daniel Kachhap
2019-04-23 15:45 ` Dave Martin
2019-04-23 15:45 ` Dave Martin
2019-04-24 6:39 ` Amit Daniel Kachhap
2019-04-24 6:39 ` Amit Daniel Kachhap
2019-04-23 4:42 ` [PATCH v10 4/5] KVM: arm64: Add capability to advertise ptrauth for guest Amit Daniel Kachhap
2019-04-23 4:42 ` Amit Daniel Kachhap
2019-04-23 15:45 ` Dave Martin
2019-04-23 15:45 ` Dave Martin
2019-04-23 4:42 ` [kvmtool PATCH v10 5/5] KVM: arm/arm64: Add a vcpu feature for pointer authentication Amit Daniel Kachhap
2019-04-23 4:42 ` Amit Daniel Kachhap
2019-04-23 15:46 ` Dave Martin
2019-04-23 15:46 ` Dave Martin
2019-04-24 7:02 ` Amit Daniel Kachhap
2019-04-24 7:02 ` Amit Daniel Kachhap
2019-04-24 13:41 ` Dave Martin
2019-04-24 13:41 ` Dave Martin
2019-05-28 10:11 ` Dave Martin
2019-05-28 12:48 ` Amit Daniel Kachhap
2019-05-28 13:38 ` Dave Martin
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