From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH RESEND] virtio: virtio_pci_legacy: Remove default y from Kconfig Date: Wed, 11 Mar 2020 19:02:32 -0400 Message-ID: <20200311190026-mutt-send-email-mst@kernel.org> References: <20200228232736.182780-1-rammuthiah@google.com> <20200301023025-mutt-send-email-mst@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Ram Muthiah Cc: Jason Wang , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kernel-team@android.com List-Id: virtualization@lists.linuxfoundation.org On Wed, Mar 11, 2020 at 03:44:14PM -0700, Ram Muthiah wrote: > On Sat, Feb 29, 2020 at 11:32 PM Michael S. Tsirkin wrote: > > > > On Fri, Feb 28, 2020 at 03:27:36PM -0800, Ram Muthiah wrote: > > > The legacy pci driver should no longer be default enabled. QEMU has > > > implemented support for Virtio 1 for virtio-pci since June 2015 > > > on SHA dfb8e184db75. > > > > > > Signed-off-by: Ram Muthiah > > > > I see little reason to do this: y is safer and will boot on more > > hypervisors, so people that aren't sure should enable it. > > > > In that case, would it be reasonable to fold VIRTIO_PCI_LEGACY > into VIRTIO_PCI? > > The result would boot more hypervisors as well and remove the > CONFIG in the process. This might break configurations relying on the flying car joke to be there. > > > --- > > > drivers/virtio/Kconfig | 6 ------ > > > 1 file changed, 6 deletions(-) > > > > > > diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig > > > index 078615cf2afc..eacd0b90d32b 100644 > > > --- a/drivers/virtio/Kconfig > > > +++ b/drivers/virtio/Kconfig > > > @@ -26,7 +26,6 @@ config VIRTIO_PCI > > > > > > config VIRTIO_PCI_LEGACY > > > bool "Support for legacy virtio draft 0.9.X and older devices" > > > - default y > > > depends on VIRTIO_PCI > > > ---help--- > > > Virtio PCI Card 0.9.X Draft (circa 2014) and older device support. > > > @@ -36,11 +35,6 @@ config VIRTIO_PCI_LEGACY > > > If disabled, you get a slightly smaller, non-transitional driver, > > > with no legacy compatibility. > > > > > > - So look out into your driveway. Do you have a flying car? If > > > - so, you can happily disable this option and virtio will not > > > - break. Otherwise, leave it set. Unless you're testing what > > > - life will be like in The Future. > > > - > > > If unsure, say Y. > > > > > > config VIRTIO_PMEM > > > -- > > > 2.25.0.265.gbab2e86ba0-goog > >