linux-kernel - Re: [PATCH 5/5] s390/uv: Update query for secret-UVCs

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Message-ID: <ZF42vescJsAtK9pL@osiris>
Date:   Fri, 12 May 2023 14:53:17 +0200
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Steffen Eiden <seiden@...ux.ibm.com>
Cc:     kvm@...r.kernel.org, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Viktor Mihajlovski <mihajlov@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Nico Boehr <nrb@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Hendrik Brueckner <brueckner@...ux.ibm.com>
Subject: Re: [PATCH 5/5] s390/uv: Update query for secret-UVCs

On Fri, May 12, 2023 at 11:31:53AM +0200, Steffen Eiden wrote:
> Update the query struct such that secret-UVC related
> information can be parsed.
> Add sysfs files for these new values.
> 
> Signed-off-by: Steffen Eiden <seiden@...ux.ibm.com>
> ---
>  arch/s390/boot/uv.c        |  4 ++++
>  arch/s390/include/asm/uv.h | 11 ++++++++++-
>  arch/s390/kernel/uv.c      | 40 ++++++++++++++++++++++++++++++++++++++
>  3 files changed, 54 insertions(+), 1 deletion(-)
...
> +static ssize_t uv_query_supp_add_secret_req_ver(struct kobject *kobj,
> +						struct kobj_attribute *attr, char *page)
> +{
> +	return scnprintf(page, PAGE_SIZE, "%lx\n", uv_info.supp_add_secret_req_ver);
> +}

FWIW, another minor thing: all of these should be sysfs_emit() instead.