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From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Cc: Jared Bents <jared.bents@rockwellcollins.com>, buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 1/1] package/libvirt: aarch64 needs headers >= 4.11
Date: Sun, 8 Aug 2021 23:12:33 +0200	[thread overview]
Message-ID: <20210808231233.615ba5a1@windsurf> (raw)
In-Reply-To: <20210807162742.490256-1-fontaine.fabrice@gmail.com>

On Sat,  7 Aug 2021 18:27:42 +0200
Fabrice Fontaine <fontaine.fabrice@gmail.com> wrote:

> libvirt unconditionally uses HWCAP_CPUID on arm which is only available
> since kernel 4.11 and
> https://github.com/torvalds/linux/commit/77c97b4ee21290f5f083173d957843b615abbff2
> resulting in the following build failure since the addition of the
> packahe in commit ccfc90e1010e42e6529afae3a5ea8bf7226dabc1:
> 
> ../src/cpu/cpu_arm.c: In function 'virCPUarmCpuDataFromRegs':
> ../src/cpu/cpu_arm.c:562:20: error: 'HWCAP_CPUID' undeclared (first use in this function); did you mean 'HWCAP_PMULL'?
>      if (!(hwcaps & HWCAP_CPUID)) {
>                     ^~~~~~~~~~~
>                     HWCAP_PMULL
> 
> Fixes:
>  - http://autobuild.buildroot.org/results/85bf7b4dad73a748bf439e63874eb64d9a53088f
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> ---
>  package/libvirt/Config.in | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/package/libvirt/Config.in b/package/libvirt/Config.in
> index 2f191882cc..e231511906 100644
> --- a/package/libvirt/Config.in
> +++ b/package/libvirt/Config.in
> @@ -1,6 +1,6 @@
>  config BR2_PACKAGE_LIBVIRT_ARCH_SUPPORTS
>  	bool
> -	default y if BR2_aarch64
> +	default y if BR2_aarch64 && BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11

What bothers me is that for kernel headers dependencies, we normally
have a comment. Is it worth it in this case? Perhaps not.

Yann, Arnout, Peter?

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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  reply	other threads:[~2021-08-08 21:12 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-07 16:27 [Buildroot] [PATCH 1/1] package/libvirt: aarch64 needs headers >= 4.11 Fabrice Fontaine
2021-08-08 21:12 ` Thomas Petazzoni [this message]
2021-08-19 21:42 ` Yann E. MORIN

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