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From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Jason Wang <jasowang@redhat.com>,
	mst@redhat.com, linux-kernel@vger.kernel.org,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org
Cc: jgg@mellanox.com, maxime.coquelin@redhat.com,
	cunming.liang@intel.com, zhihong.wang@intel.com,
	rob.miller@broadcom.com, xiao.w.wang@intel.com,
	lingshan.zhu@intel.com, eperezma@redhat.com, lulu@redhat.com,
	parav@mellanox.com, kevin.tian@intel.com, stefanha@redhat.com,
	rdunlap@infradead.org, hch@infradead.org, aadam@redhat.com,
	jiri@mellanox.com, shahafs@mellanox.com, hanand@xilinx.com,
	mhabets@solarflare.com, gdawar@xilinx.com, saugatm@xilinx.com,
	vmireyno@marvell.com, zhangweining@ruijie.com.cn
Subject: Re: [PATCH V9 1/9] vhost: refine vhost and vringh kconfig
Date: Wed, 1 Apr 2020 14:56:28 +0200	[thread overview]
Message-ID: <4726da4c-11ec-3b6e-1218-6d6d365d5038@de.ibm.com> (raw)
In-Reply-To: <41ee1f6a-3124-d44b-bf34-0f26604f9514@redhat.com>


On 01.04.20 14:50, Jason Wang wrote:
> 
> On 2020/4/1 下午7:21, Christian Borntraeger wrote:
>> On 26.03.20 15:01, Jason Wang wrote:
>>> Currently, CONFIG_VHOST depends on CONFIG_VIRTUALIZATION. But vhost is
>>> not necessarily for VM since it's a generic userspace and kernel
>>> communication protocol. Such dependency may prevent archs without
>>> virtualization support from using vhost.
>>>
>>> To solve this, a dedicated vhost menu is created under drivers so
>>> CONIFG_VHOST can be decoupled out of CONFIG_VIRTUALIZATION.
>> FWIW, this now results in vhost not being build with defconfig kernels (in todays
>> linux-next).
>>
> 
> Hi Christian:
> 
> Did you meet it even with this commit https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a4be40cbcedba9b5b714f3c95182e8a45176e42d?

I simply used linux-next. The defconfig does NOT contain CONFIG_VHOST and therefore CONFIG_VHOST_NET and friends
can not be selected.

$ git checkout next-20200401
$ make defconfig
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/confdata.o
  HOSTCC  scripts/kconfig/expr.o
  LEX     scripts/kconfig/lexer.lex.c
  YACC    scripts/kconfig/parser.tab.[ch]
  HOSTCC  scripts/kconfig/lexer.lex.o
  HOSTCC  scripts/kconfig/parser.tab.o
  HOSTCC  scripts/kconfig/preprocess.o
  HOSTCC  scripts/kconfig/symbol.o
  HOSTCC  scripts/kconfig/util.o
  HOSTLD  scripts/kconfig/conf
*** Default configuration is based on 'x86_64_defconfig'
#
# configuration written to .config
#

$ grep VHOST .config
# CONFIG_VHOST is not set

 
> If yes, what's your build config looks like?
> 
> Thanks
> 


  reply	other threads:[~2020-04-01 12:56 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-26 14:01 [PATCH V9 0/9] vDPA support Jason Wang
2020-03-26 14:01 ` [PATCH V9 1/9] vhost: refine vhost and vringh kconfig Jason Wang
2020-04-01 11:21   ` Christian Borntraeger
2020-04-01 12:50     ` Jason Wang
2020-04-01 12:56       ` Christian Borntraeger [this message]
2020-04-01 13:02         ` Christian Borntraeger
2020-04-01 14:01           ` Michael S. Tsirkin
2020-04-01 14:13           ` Jason Wang
2020-04-01 14:18             ` Michael S. Tsirkin
2020-04-01 14:36               ` Jason Wang
2020-04-01 14:27             ` Michael S. Tsirkin
2020-04-01 14:50               ` Jason Wang
2020-04-01 15:57                 ` Michael S. Tsirkin
2020-04-01 18:53                   ` Christian Borntraeger
2020-04-01 13:22   ` Michael S. Tsirkin
2020-04-01 14:08     ` Jason Wang
2020-04-01 14:13       ` Michael S. Tsirkin
2020-04-01 14:29         ` Jason Wang
2020-04-01 14:35           ` Michael S. Tsirkin
2020-04-01 14:39             ` Jason Wang
2020-04-01 14:39           ` Michael S. Tsirkin
2020-04-01 14:43             ` Jason Wang
2020-04-01 16:05           ` Michael S. Tsirkin
2020-04-01 16:08           ` Michael S. Tsirkin
2020-04-02  3:22             ` Jason Wang
2020-04-02 14:03               ` Michael S. Tsirkin
2020-04-02 14:23                 ` Jason Wang
2020-04-02 14:38                   ` Michael S. Tsirkin
2020-04-02 14:56                     ` Jason Wang
2020-03-26 14:01 ` [PATCH V9 2/9] vhost: allow per device message handler Jason Wang
2020-03-26 14:01 ` [PATCH V9 3/9] vhost: factor out IOTLB Jason Wang
2020-03-26 14:01 ` [PATCH V9 4/9] vringh: IOTLB support Jason Wang
2020-03-26 14:01 ` [PATCH V9 5/9] vDPA: introduce vDPA bus Jason Wang
2020-03-26 14:01 ` [PATCH V9 6/9] virtio: introduce a vDPA based transport Jason Wang
2020-03-26 14:01 ` [PATCH V9 7/9] vhost: introduce vDPA-based backend Jason Wang
2020-03-26 14:01 ` [PATCH V9 8/9] vdpasim: vDPA device simulator Jason Wang
2020-04-10  7:45   ` Geert Uytterhoeven
2020-04-10  8:23     ` Jason Wang
2020-03-26 14:01 ` [PATCH V9 9/9] virtio: Intel IFC VF driver for VDPA Jason Wang
2020-04-09 10:41   ` Arnd Bergmann
2020-04-09 12:43     ` Jason Wang
2020-04-09 12:49       ` Zhu, Lingshan
2020-04-09 20:25     ` Michael S. Tsirkin
2020-04-10  3:15       ` Zhu, Lingshan
2020-03-29 11:07 ` [PATCH V9 0/9] vDPA support Michael S. Tsirkin

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