diff options
Diffstat (limited to 'poky/meta/classes-recipe/qemuboot.bbclass')
| -rw-r--r-- | poky/meta/classes-recipe/qemuboot.bbclass | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/poky/meta/classes-recipe/qemuboot.bbclass b/poky/meta/classes-recipe/qemuboot.bbclass index e30b380c3d..5c4bbd6737 100644 --- a/poky/meta/classes-recipe/qemuboot.bbclass +++ b/poky/meta/classes-recipe/qemuboot.bbclass @@ -107,6 +107,13 @@ QB_ROOTFS_EXTRA_OPT ?= "" QB_GRAPHICS ?= "" QB_NFSROOTFS_EXTRA_OPT ?= "" +# With 6.5+ (specifically, if DMA_BOUNCE_UNALIGNED_KMALLOC is set) the SW IO TLB +# is used, and it defaults to 64MB. This is too much when there's only 256MB of +# RAM, so request 0 slabs and lets the kernel round up to the appropriate minimum +# (1MB, typically). In virtual hardware there's very little need for these bounce +# buffers, so the 64MB would be mostly wasted. +QB_KERNEL_CMDLINE_APPEND:append = " swiotlb=0" + # This should be kept align with ROOT_VM QB_DRIVE_TYPE ?= "/dev/sd" |