Re: [PATCH] arm64: KVM: Use SMCCC_ARCH_WORKAROUND_1 for Falkor BP hardening

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On Fri, Mar 2, 2018 at 3:50 PM, Shanker Donthineni
<shankerd@xxxxxxxxxxxxxx> wrote:
> diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h
> index bb26382..6ecc249 100644
> --- a/arch/arm64/include/asm/cpucaps.h
> +++ b/arch/arm64/include/asm/cpucaps.h
> @@ -43,7 +43,7 @@
>  #define ARM64_SVE                              22
>  #define ARM64_UNMAP_KERNEL_AT_EL0              23
>  #define ARM64_HARDEN_BRANCH_PREDICTOR          24
> -#define ARM64_HARDEN_BP_POST_GUEST_EXIT                25
> +/* #define ARM64_UNALLOCATED_ENTRY                     25 */

Why not just delete the entry?  Is ARM64_NCAPS never supposed to get smaller?
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