From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 07/19] arm64: KVM: Allow an exit code to be tagged with an SError
Date: Tue, 6 Sep 2016 14:02:05 +0100 [thread overview]
Message-ID: <1473166937-15271-8-git-send-email-marc.zyngier@arm.com> (raw)
In-Reply-To: <1473166937-15271-1-git-send-email-marc.zyngier@arm.com>
Similarily to EL1, an asynchronous abort can be triggered whilst
running at EL2. But instead of making that a new error code,
we need to communicate it to the rest of KVM together with
the exit reason. So let's hijack a single bit that allows the
exception code to be tagged with a "pending SError" information.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm64/include/asm/kvm_asm.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index d177e7e..18f7465 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -20,6 +20,10 @@
#include <asm/virt.h>
+#define ARM_EXIT_WITH_SERROR_BIT 31
+#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT))
+#define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT))
+
#define ARM_EXCEPTION_IRQ 0
#define ARM_EXCEPTION_EL1_SERROR 1
#define ARM_EXCEPTION_TRAP 2
--
2.1.4
next prev parent reply other threads:[~2016-09-06 13:02 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-06 13:01 [PATCH 00/19] Handle guest-generated SErrors/Aborts Marc Zyngier
2016-09-06 13:01 ` [PATCH 01/19] arm64: KVM: Rename HCR_VA to HCR_VSE Marc Zyngier
2016-09-06 13:02 ` [PATCH 02/19] arm64: KVM: Preserve pending vSError in world switch Marc Zyngier
2016-09-06 13:02 ` [PATCH 03/19] arm64: KVM: Add Virtual Abort injection helper Marc Zyngier
2016-09-06 13:02 ` [PATCH 04/19] arm64: KVM: Add exception code to report EL1 asynchronous aborts Marc Zyngier
2016-09-06 13:02 ` [PATCH 05/19] arm64: KVM: Add EL1 async abort handler Marc Zyngier
2016-09-06 13:02 ` [PATCH 06/19] arm64: KVM: Route asynchronous aborts Marc Zyngier
2016-09-06 13:02 ` Marc Zyngier [this message]
2016-09-06 13:02 ` [PATCH 08/19] arm64: KVM: Inject a Virtual SError if it was pending Marc Zyngier
2016-09-06 13:02 ` [PATCH 09/19] arm64: KVM: Handle async aborts delivered while at EL2 Marc Zyngier
2016-09-07 17:03 ` Christoffer Dall
2016-09-07 17:21 ` Marc Zyngier
2016-09-08 8:47 ` Christoffer Dall
2016-09-06 13:02 ` [PATCH 10/19] arm: KVM: Preserve pending Virtual Abort in world switch Marc Zyngier
2016-09-06 13:02 ` [PATCH 11/19] arm: KVM: Add Virtual Abort injection helper Marc Zyngier
2016-09-06 13:02 ` [PATCH 12/19] arm: KVM: Add HYP async abort handler Marc Zyngier
2016-09-06 13:02 ` [PATCH 13/19] arm: KVM: Allow an exit code to be tagged with a Virtual Abort Marc Zyngier
2016-09-06 13:02 ` [PATCH 14/19] arm: KVM: Handle async aborts delivered while at HYP Marc Zyngier
2016-09-06 13:02 ` [PATCH 15/19] arm: KVM: Inject a Virtual Abort if it was pending Marc Zyngier
2016-09-06 13:02 ` [PATCH 16/19] arm: KVM: Drop unreachable HYP abort handlers Marc Zyngier
2016-09-06 13:02 ` [PATCH 17/19] arm/arm64: KVM: Inject virtual abort when guest exits on external abort Marc Zyngier
2016-09-08 9:09 ` Christoffer Dall
2016-09-06 13:02 ` [PATCH 18/19] arm/arm64: KVM: Remove external abort test from MMIO handling Marc Zyngier
2016-09-06 13:02 ` [PATCH 19/19] arm64: KVM: Inject a vSerror if detecting a bad GICV access at EL2 Marc Zyngier
2016-09-08 9:44 ` [PATCH 00/19] Handle guest-generated SErrors/Aborts Christoffer Dall
2016-09-08 9:55 ` Marc Zyngier
2016-09-08 9:47 ` Wei Chen
2016-09-08 10:02 ` Marc Zyngier
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