linux-kernel - Re: [PATCH v2] drivers/virt/vSMP: new driver

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Date:   Tue, 6 Sep 2022 15:50:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     "Czerwacki, Eial" <eial.czerwacki@....com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Arsh, Leonid" <leonid.arsh@....com>,
        "Twaig, Oren" <oren.twaig@....com>,
        SAP vSMP Linux Maintainer <linux.vsmp@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Andra Paraschiv <andraprs@...zon.com>,
        Borislav Petkov <bp@...e.de>,
        Brijesh Singh <brijesh.singh@....com>,
        Eric Biggers <ebiggers@...gle.com>, Fei Li <fei1.li@...el.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Subject: Re: [PATCH v2] drivers/virt/vSMP: new driver

On Thu, Aug 25, 2022 at 06:24:02AM +0000, Czerwacki, Eial wrote:
> --- /dev/null
> +++ b/drivers/virt/vsmp/Kconfig
> @@ -0,0 +1,11 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config VSMP
> +	tristate "vSMP Guest Support"
> +	depends on SYS_HYPERVISOR && X86_64 && PCI
> +	help
> +	  Support for vSMP Guest Driver.
> +
> +	  This driver allows information gathering of data from the vSMP hypervisor when
> +	  running on top of a vSMP-based hypervisor.
> +
> +	  If unsure, say no.

In wanting to test this out, I tried it but this depends line is wrong,
you have to set SYS_HYPERVISOR, you can not depend on it otherwise your
code will never be selected :(

How did you test this?

thanks,

greg k-h