From: b18965@freescale.com (Alison Wang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm/arm64: KVM: Add support for ARMv8 AArch32 execution state
Date: Fri, 23 Sep 2016 15:13:25 +0800 [thread overview]
Message-ID: <1474614805-18629-1-git-send-email-b18965@freescale.com> (raw)
The ARMv8 architecture supports two execution state, AArch64 and
AArch32. To support KVM in AArch32 execution state for ARMv8, Cortex-A53
and Cortex-A72 need to be added for target-specific checks.
Signed-off-by: Alison Wang <alison.wang@nxp.com>
---
arch/arm/include/asm/cputype.h | 2 ++
arch/arm/kvm/guest.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index 754f86f..4f8c632 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -75,6 +75,8 @@
#define ARM_CPU_PART_CORTEX_A12 0x4100c0d0
#define ARM_CPU_PART_CORTEX_A17 0x4100c0e0
#define ARM_CPU_PART_CORTEX_A15 0x4100c0f0
+#define ARM_CPU_PART_CORTEX_A53_AARCH32 0x4100d030
+#define ARM_CPU_PART_CORTEX_A72_AARCH32 0x4100d080
#define ARM_CPU_PART_MASK 0xff00fff0
/* DEC implemented cores */
diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
index 9aca920..462a099 100644
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -252,6 +252,8 @@ int __attribute_const__ kvm_target_cpu(void)
{
switch (read_cpuid_part()) {
case ARM_CPU_PART_CORTEX_A7:
+ case ARM_CPU_PART_CORTEX_A53_AARCH32:
+ case ARM_CPU_PART_CORTEX_A72_AARCH32:
return KVM_ARM_TARGET_CORTEX_A7;
case ARM_CPU_PART_CORTEX_A15:
return KVM_ARM_TARGET_CORTEX_A15;
--
2.1.0.27.g96db324
next reply other threads:[~2016-09-23 7:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-23 7:13 Alison Wang [this message]
2016-09-23 9:25 ` [PATCH] arm/arm64: KVM: Add support for ARMv8 AArch32 execution state Christoffer Dall
2016-09-23 9:30 ` Marc Zyngier
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