linux-kernel - Re: [PATCH] s390/kvm: avoid hypfs error message

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Message-ID: <5431f626-9bd3-ed54-9889-aafbba9ca3e0@suse.com>
Date:   Mon, 20 Jun 2022 08:03:18 +0200
From:   Juergen Gross <jgross@...e.com>
To:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        Heiko Carstens <hca@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>
Subject: Re: [PATCH] s390/kvm: avoid hypfs error message

Ping?

On 07.06.22 14:33, Juergen Gross wrote:
> When booting under KVM the following error messages are issued:
> 
> hypfs.7f5705: The hardware system does not support hypfs
> hypfs.7a79f0: Initialization of hypfs failed with rc=-61
> 
> While being documented, they can easily be avoided by bailing out of
> hypfs_init() early in case of running as a KVM guest.
> 
> Signed-off-by: Juergen Gross <jgross@...e.com>
> ---
>   arch/s390/hypfs/inode.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
> index 5c97f48cea91..bdf078f3c641 100644
> --- a/arch/s390/hypfs/inode.c
> +++ b/arch/s390/hypfs/inode.c
> @@ -464,6 +464,9 @@ static int __init hypfs_init(void)
>   {
>   	int rc;
>   
> +	if (MACHINE_IS_KVM)
> +		return -ENODATA;
> +
>   	hypfs_dbfs_init();
>   
>   	if (hypfs_diag_init()) {


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