From: Amit Daniel Kachhap <amit.kachhap@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Andrew Jones <drjones@redhat.com>,
Julien Thierry <julien.thierry@arm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Christoffer Dall <christoffer.dall@arm.com>,
Kristina Martsenko <kristina.martsenko@arm.com>,
kvmarm@lists.cs.columbia.edu, James Morse <james.morse@arm.com>,
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 v7 8/10] KVM: arm64: Add capability to advertise ptrauth for guest
Date: Tue, 19 Mar 2019 14:00:41 +0530 [thread overview]
Message-ID: <1552984243-7689-9-git-send-email-amit.kachhap@arm.com> (raw)
In-Reply-To: <1552984243-7689-1-git-send-email-amit.kachhap@arm.com>
This patch advertises the capability of pointer authentication
when system supports pointer authentication and VHE mode present.
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
---
arch/arm64/kvm/reset.c | 4 ++++
include/uapi/linux/kvm.h | 1 +
2 files changed, 5 insertions(+)
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index 00f0639..a3b269e 100644
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -92,6 +92,10 @@ int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_ARM_VM_IPA_SIZE:
r = kvm_ipa_limit;
break;
+ case KVM_CAP_ARM_PTRAUTH:
+ r = has_vhe() && system_supports_address_auth() &&
+ system_supports_generic_auth();
+ break;
default:
r = 0;
}
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 6d4ea4b..a553477 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -988,6 +988,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_ARM_VM_IPA_SIZE 165
#define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT 166
#define KVM_CAP_HYPERV_CPUID 167
+#define KVM_CAP_ARM_PTRAUTH 168
#ifdef KVM_CAP_IRQ_ROUTING
--
2.7.4
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next prev parent reply other threads:[~2019-03-19 8:33 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 ` Amit Daniel Kachhap [this message]
2019-03-25 20:05 ` [PATCH v7 8/10] KVM: arm64: Add capability to advertise ptrauth for guest 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
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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