Re: [Qemu-devel] [PATCH 1/2] linux-user: update PPC64 HWCAP2 feature list

[Laurent Vivier <laurent@vivier.eu>]

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Le 09/06/2019 à 16:35, Laurent Vivier a écrit :
> QEMU_PPC_FEATURE2_VEC_CRYPTO enables the use
> of VSX instructions in libcrypto that are accelerated
> by the TCG vector instructions now.
> 
> QEMU_PPC_FEATURE2_DARN allows to use the new builtin
> qemu_guest_getrandom() function.
> 
> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
> ---
>  linux-user/elfload.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/linux-user/elfload.c b/linux-user/elfload.c
> index 5451d262ec8e..5751beff1b64 100644
> --- a/linux-user/elfload.c
> +++ b/linux-user/elfload.c
> @@ -768,7 +768,13 @@ enum {
>      QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000, /* Event Base Branching */
>      QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000, /* Integer Select */
>      QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000, /* Target Address Register */
> +    QEMU_PPC_FEATURE2_VEC_CRYPTO = 0x02000000,
> +    QEMU_PPC_FEATURE2_HTM_NOSC = 0x01000000,
>      QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000, /* ISA 3.00 */
> +    QEMU_PPC_FEATURE2_HAS_IEEE128 = 0x00400000, /* VSX IEEE Bin Float 128-bit */
> +    QEMU_PPC_FEATURE2_DARN = 0x00200000, /* darn random number insn */
> +    QEMU_PPC_FEATURE2_SCV = 0x00100000, /* scv syscall */
> +    QEMU_PPC_FEATURE2_HTM_NO_SUSPEND = 0x00080000, /* TM w/o suspended state */
>  };
>  
>  #define ELF_HWCAP get_elf_hwcap()
> @@ -822,8 +828,10 @@ static uint32_t get_elf_hwcap2(void)
>      GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL);
>      GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR);
>      GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 |
> -                  PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07);
> -    GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00);
> +                  PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |
> +                  QEMU_PPC_FEATURE2_VEC_CRYPTO);
> +    GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |
> +                 QEMU_PPC_FEATURE2_DARN);
>  
>  #undef GET_FEATURE
>  #undef GET_FEATURE2
>