Re: [PATCH] arm/arm64: KVM: Add support for ARMv8 AArch32 execution state

From	Christoffer Dall <christoffer.dall@linaro.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH] arm/arm64: KVM: Add support for ARMv8 AArch32 execution state
Date	2016-09-23 11:30 +0200
Message-ID	<skuXU-1R8-15@gated-at.bofh.it> (permalink)
References	<skuXU-1R8-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Sep 23, 2016 at 03:13:25PM +0800, Alison Wang wrote:
> 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:

huh?  why are we mapping A53 and A72 cores to an A7 core?

-Christoffer

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Re: [PATCH] arm/arm64: KVM: Add support for ARMv8 AArch32 execution  state Christoffer Dall <christoffer.dall@linaro.org> - 2016-09-23 11:30 +0200
  Re: [PATCH] arm/arm64: KVM: Add support for ARMv8 AArch32 execution  state Marc Zyngier <marc.zyngier@arm.com> - 2016-09-23 11:40 +0200

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