From 05d235dd1c2ca6d41fbd04a7c40e27240be214ee Mon Sep 17 00:00:00 2001
From: Donald Buczek <buczek@molgen.mpg.de>
Date: Thu, 1 Jul 2021 08:57:07 +0200
Subject: [PATCH] linux-5.10.47: Configure standalone virtio-fs usage

Resolves #2150

According to [1] the following parameters are required: VIRTIO,
VIRTIO_FS, DAX, FS_DAX, DAX_DRIVER, ZONE_DEVICE.

VIRTIO is already selected (as y) by the existing VIRTIO_PCI (=y).

Set VIRTIO_FS.

DAX is selected by DAX_DRIVER and DAX_DRIVER is selected by BLK_DEV_PMEM
&& LIBNVDIMM.  BLK_DEV_PMEM ist default LIBNVDIMM. Set LIBNVDIMM.

Set FS_DAX.

DAX_DRIVER is already selected by BLK_DEV_PMEM and LIBNVDIMM.

ZONE_DEVICE depends on MEMORY_HOTPLUG and MEMORY_HOTREMOVE. Set all three.

[1]: https://virtio-fs.gitlab.io/howto-qemu.html
---
 linux-5.10.47-390.bee | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/linux-5.10.47-390.bee b/linux-5.10.47-390.bee
index 81158f1d9..38938fcda 100755
--- a/linux-5.10.47-390.bee
+++ b/linux-5.10.47-390.bee
@@ -127,7 +127,10 @@ mee_configure() {
 	CONFIG_LDM_PARTITION=y
 	# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 	CONFIG_BINFMT_MISC=y
+	CONFIG_MEMORY_HOTPLUG=y
+	CONFIG_MEMORY_HOTREMOVE=y
 	CONFIG_TRANSPARENT_HUGEPAGE=y
+	CONFIG_ZONE_DEVICE=y
 	CONFIG_NET=y
 	CONFIG_PACKET=m
 	CONFIG_PACKET_DIAG=m
@@ -822,6 +825,7 @@ mee_configure() {
 	CONFIG_AMD_IOMMU_V2=m
 	CONFIG_INTEL_IOMMU=y
 	CONFIG_IRQ_REMAP=y
+	CONFIG_LIBNVDIMM=m
 	CONFIG_EXT2_FS=y
 	CONFIG_EXT3_FS=m
 	CONFIG_EXT3_FS_POSIX_ACL=y
@@ -835,6 +839,7 @@ mee_configure() {
 	CONFIG_XFS_POSIX_ACL=y
 	CONFIG_XFS_RT=y
 	CONFIG_BTRFS_FS=m
+	CONFIG_FS_DAX=y
 	CONFIG_BTRFS_FS_POSIX_ACL=y
 	CONFIG_FANOTIFY=y
 	CONFIG_QUOTA=y
@@ -843,6 +848,7 @@ mee_configure() {
 	CONFIG_QFMT_V2=m
 	CONFIG_AUTOFS4_FS=m
 	CONFIG_FUSE_FS=m
+	CONFIG_VIRTIO_FS=m
 	CONFIG_OVERLAY_FS=m
 	CONFIG_FSCACHE=y
 	CONFIG_FSCACHE_STATS=y