fix: Support CPU's without SSE4 (#619)

readme.md

@@ -189,7 +189,7 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
 
   After configuring the container for macvlan (see above), it is possible for DSM to become part of your home network by requesting an IP from your router, just like your other devices.
 
-  To enable this feature, add the following lines to your compose file:
+  To enable this mode, add the following lines to your compose file:
 
   ```yaml
   environment:
@@ -198,7 +198,7 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
     - 'c *:* rwm'
   ```
 
-  Please note that even if you don't want DHCP, it's still recommended to enable this feature, as it prevents NAT issues and increases performance by using a `macvtap` interface. In that case, just set a static IP from the DSM control panel after you enabled this mode.
+  Please note that even if you don't need DHCP, it's still recommended to enable this mode, as it prevents NAT issues and increases performance by using a `macvtap` interface. You can just set a static IP from the DSM control panel afterwards.
 
 * ### How do I pass-through the GPU?
 

src/disk.sh

@@ -341,6 +341,21 @@ checkFS () {
   return 0
 }
 
+createDevice () {
+
+  local DISK_ID=$1
+  local DISK_FILE=$2
+  local DISK_INDEX=$3
+  local DISK_ADDRESS=$4
+  local DISK_FMT=$5
+
+  echo "-drive file=$DISK_FILE,if=none,id=drive-$DISK_ID,format=$DISK_FMT,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
+    -device virtio-scsi-pci,id=hw-$DISK_ID,iothread=io2,bus=pcie.0,addr=$DISK_ADDRESS \
+    -device scsi-hd,bus=hw-$DISK_ID.0,channel=0,scsi-id=0,lun=0,drive=drive-$DISK_ID,id=$DISK_ID,rotation_rate=$DISK_ROTATION,bootindex=$DISK_INDEX"
+
+  return 0
+}
+
 addDisk () {
   local DISK_ID=$1
   local DISK_BASE=$2
@@ -351,7 +366,7 @@ addDisk () {
   local DISK_ADDRESS=$7
   local DISK_FMT=$8
   local DISK_FILE="$DISK_BASE.$DISK_EXT"
-  local DIR DATA_SIZE FS PREV_FMT PREV_EXT CUR_SIZE
+  local DIR DATA_SIZE FS PREV_FMT PREV_EXT CUR_SIZE OPTS
 
   DIR=$(dirname "$DISK_FILE")
   [ ! -d "$DIR" ] && return 0
@@ -399,10 +414,8 @@ addDisk () {
 
   fi
 
-  DISK_OPTS="$DISK_OPTS \
-    -device virtio-scsi-pci,id=hw-$DISK_ID,iothread=io2,bus=pcie.0,addr=$DISK_ADDRESS \
-    -drive file=$DISK_FILE,if=none,id=drive-$DISK_ID,format=$DISK_FMT,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
-    -device scsi-hd,bus=hw-$DISK_ID.0,channel=0,scsi-id=0,lun=0,drive=drive-$DISK_ID,id=$DISK_ID,rotation_rate=$DISK_ROTATION,bootindex=$DISK_INDEX"
+  OPTS=$(createDevice "$DISK_ID" "$DISK_FILE" "$DISK_INDEX" "$DISK_ADDRESS" "$DISK_FMT")
+  DISK_OPTS="$DISK_OPTS $OPTS"
 
   return 0
 }
@@ -418,10 +431,9 @@ addDevice () {
   [ -z "$DISK_DEV" ] && return 0
   [ ! -b "$DISK_DEV" ] && error "Device $DISK_DEV cannot be found! Please add it to the 'devices' section of your compose file." && exit 55
 
-  DISK_OPTS="$DISK_OPTS \
-    -device virtio-scsi-pci,id=hw-$DISK_ID,iothread=io2,bus=pcie.0,addr=$DISK_ADDRESS \
-    -drive file=$DISK_DEV,if=none,id=drive-$DISK_ID,format=raw,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
-    -device scsi-hd,bus=hw-$DISK_ID.0,channel=0,scsi-id=0,lun=0,drive=drive-$DISK_ID,id=$DISK_ID,rotation_rate=$DISK_ROTATION,bootindex=$DISK_INDEX"
+  local OPTS
+  OPTS=$(createDevice "$DISK_ID" "$DISK_DEV" "$DISK_INDEX" "$DISK_ADDRESS" "raw")
+  DISK_OPTS="$DISK_OPTS $OPTS"
 
   return 0
 }

src/proc.sh

@@ -6,7 +6,8 @@ set -Eeuo pipefail
 : "${KVM:="Y"}"
 : "${HOST_CPU:=""}"
 : "${CPU_FLAGS:=""}"
-: "${CPU_MODEL:="host"}"
+: "${CPU_MODEL:=""}"
+: "${DEF_MODEL:="qemu64"}"
 
 [ "$ARCH" != "amd64" ] && KVM="N"
 
@@ -28,7 +29,7 @@ if [[ "$KVM" != [Nn]* ]]; then
 
   if [ -n "$KVM_ERR" ]; then
     KVM="N"
-    error "KVM acceleration not detected $KVM_ERR, this will cause a major loss of performance."
+    error "KVM acceleration not available $KVM_ERR, this will cause a major loss of performance."
     error "See the FAQ on how to enable it, or continue without KVM by setting KVM=N (not recommended)."
     [[ "$DEBUG" != [Yy1]* ]] && exit 88
   fi
@@ -37,35 +38,54 @@ fi
 
 if [[ "$KVM" != [Nn]* ]]; then
 
-  CPU_FEATURES="kvm=on"
   KVM_OPTS=",accel=kvm -enable-kvm"
+  CPU_FEATURES="kvm=on,l3-cache=on"
 
   if ! grep -qE '^flags.* (sse4_2)' /proc/cpuinfo; then
-    error "Your host CPU does not have the SSE4.2 instruction set that Virtual DSM requires to boot."
-    error "Disable KVM by setting KVM=N to emulate a compatible CPU, at the cost of performance."
-    [[ "$DEBUG" != [Yy1]* ]] && exit 89
+    info "Your CPU does not have the SSE4 instruction set that Virtual DSM requires, it will be emulated..."
+    [ -z "$CPU_MODEL" ] && CPU_MODEL="$DEF_MODEL"
+    CPU_FEATURES="$CPU_FEATURES,+ssse3,+sse4.1,+sse4.2"
+  fi
+
+  if [ -z "$CPU_MODEL" ]; then
+    CPU_MODEL="host"
+    CPU_FEATURES="$CPU_FEATURES,migratable=no"
   fi
 
 else
 
   KVM_OPTS=""
-  CPU_FEATURES="+ssse3,+sse4.1,+sse4.2"
+  CPU_FEATURES="l3-cache=on"
 
-  if [[ "${CPU_MODEL,,}" == "host"* ]]; then
+  if [[ "$ARCH" == "amd64" ]]; then
+    KVM_OPTS=" -accel tcg,thread=multi"
+  fi
 
+  if [ -z "$CPU_MODEL" ]; then
     if [[ "$ARCH" == "amd64" ]]; then
       CPU_MODEL="max"
+      CPU_FEATURES="$CPU_FEATURES,migratable=no"
     else
-      CPU_MODEL="qemu64"
+      CPU_MODEL="$DEF_MODEL"
     fi
-
   fi
+
+  CPU_FEATURES="$CPU_FEATURES,+ssse3,+sse4.1,+sse4.2"
+
 fi
 
 if [ -z "$CPU_FLAGS" ]; then
-  CPU_FLAGS="$CPU_MODEL,$CPU_FEATURES"
+  if [ -z "$CPU_FEATURES" ]; then
+    CPU_FLAGS="$CPU_MODEL"
+  else
+    CPU_FLAGS="$CPU_MODEL,$CPU_FEATURES"
+  fi
 else
-  CPU_FLAGS="$CPU_MODEL,$CPU_FEATURES,$CPU_FLAGS"
+  if [ -z "$CPU_FEATURES" ]; then
+    CPU_FLAGS="$CPU_MODEL,$CPU_FLAGS"
+  else
+    CPU_FLAGS="$CPU_MODEL,$CPU_FEATURES,$CPU_FLAGS"
+  fi
 fi
 
 if [ -z "$HOST_CPU" ]; then