Re: [PATCH 1/2] tools: Fix ifdef for aarch64 that should include also arm

["Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>]

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On Thu, Jun 08, 2023 at 02:59:12PM +0100, Luca Fancellu wrote:
> Commit 56a7aaa16bfe introduced some SVE related code that is protected by
> '#if defined(__aarch64__)', the issue is that this doesn't take into
> consideration when the toolstack is compiled for an arm32 Dom0 running on
> an arm64 platform, it should be able to create SVE enabled guests but with
> the current code it's not.
> 
> So fix the issue by compiling the code when the toolstack is compiled for
> both arm32 and arm64.
> 
> Fixes: 56a7aaa16bfe ("tools: add physinfo arch_capabilities handling for Arm")
> Signed-off-by: Luca Fancellu <luca.fancellu@arm.com>
> Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>

Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

> ---
>  tools/include/xen-tools/arm-arch-capabilities.h | 2 +-
>  tools/python/xen/lowlevel/xc/xc.c               | 2 +-
>  tools/xl/xl_info.c                              | 2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/include/xen-tools/arm-arch-capabilities.h b/tools/include/xen-tools/arm-arch-capabilities.h
> index 3849e897925d..4aa4c6c34a99 100644
> --- a/tools/include/xen-tools/arm-arch-capabilities.h
> +++ b/tools/include/xen-tools/arm-arch-capabilities.h
> @@ -14,7 +14,7 @@
>  static inline
>  unsigned int arch_capabilities_arm_sve(unsigned int arch_capabilities)
>  {
> -#if defined(__aarch64__)
> +#if defined(__arm__) || defined(__aarch64__)
>      unsigned int sve_vl = MASK_EXTR(arch_capabilities,
>                                      XEN_SYSCTL_PHYSCAP_ARM_SVE_MASK);
>  
> diff --git a/tools/python/xen/lowlevel/xc/xc.c b/tools/python/xen/lowlevel/xc/xc.c
> index 491e88977fd3..e14e223ec903 100644
> --- a/tools/python/xen/lowlevel/xc/xc.c
> +++ b/tools/python/xen/lowlevel/xc/xc.c
> @@ -911,7 +911,7 @@ static PyObject *pyxc_physinfo(XcObject *self)
>                             "hw_caps",          cpu_cap,
>                             "virt_caps",        virt_caps);
>  
> -#if defined(__aarch64__)
> +#if defined(__arm__) || defined(__aarch64__)
>      if ( objret ) {
>          unsigned int sve_vl_bits;
>          PyObject *py_arm_sve_vl;
> diff --git a/tools/xl/xl_info.c b/tools/xl/xl_info.c
> index ddc42f96b979..72e87eac46d1 100644
> --- a/tools/xl/xl_info.c
> +++ b/tools/xl/xl_info.c
> @@ -226,7 +226,7 @@ static void output_physinfo(void)
>          );
>  
>      /* Print arm SVE vector length only on ARM platforms */
> -#if defined(__aarch64__)
> +#if defined(__arm__) || defined(__aarch64__)
>      maybe_printf("arm_sve_vector_length  : %u\n",
>           arch_capabilities_arm_sve(info.arch_capabilities)
>          );
> -- 
> 2.34.1
> 

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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