enable CONFIG_VIRTIO_PCI_LEGACY=y

PKGBUILD

@@ -5,7 +5,7 @@ pkgbase=linux               # Build stock -ARCH kernel
 #pkgbase=linux-custom       # Build kernel with a different name
 _srcname=linux-4.0
 pkgver=4.0
-pkgrel=1
+pkgrel=2
 arch=('i686' 'x86_64')
 url="http://www.kernel.org/"
 license=('GPL2')
@@ -22,8 +22,8 @@ source=("https://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar.xz"
         'change-default-console-loglevel.patch')
 sha256sums=('0f2f7d44979bc8f71c4fc5d3308c03499c26a824dd311fdf6eef4dee0d7d5991'
             'SKIP'
-            'b4017f3a0192679639769b9903e7195deaf29a9f6033e2c8abc4cb4fa0e350b0'
-            '52b577ea1de80fa2ed419e5333d4b3756d91e268764a729ea2f02cd87bb223c5'
+            '514aa8a9d03d2419c8084725fcdb2b5b4ce07966f5bd6a51224a5f7a5f8c3694'
+            'b268b03a042e3f604a12a80c6e24c42006e4d9bf4a6d9b3201eb006942718128'
             'f0d90e756f14533ee67afda280500511a62465b4f76adcc5effa95a40045179c'
             '1256b241cd477b265a3c2d64bdc19ffe3c9bbcee82ea3994c590c2c76e767d99')
 validpgpkeys=(

config

@@ -5780,7 +5780,7 @@ CONFIG_VIRTIO=m
 # Virtio drivers
 #
 CONFIG_VIRTIO_PCI=m
-# CONFIG_VIRTIO_PCI_LEGACY is not set
+CONFIG_VIRTIO_PCI_LEGACY=y 
 CONFIG_VIRTIO_BALLOON=m
 CONFIG_VIRTIO_MMIO=m
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y

config.x86_64

@@ -5551,7 +5551,7 @@ CONFIG_VIRTIO=m
 # Virtio drivers
 #
 CONFIG_VIRTIO_PCI=m
-# CONFIG_VIRTIO_PCI_LEGACY is not set
+CONFIG_VIRTIO_PCI_LEGACY=y 
 CONFIG_VIRTIO_BALLOON=m
 CONFIG_VIRTIO_MMIO=m
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y