On Wed, 2018-08-01 at 08:22 +0100, Marc Zyngier wrote: > On Wed, 01 Aug 2018 07:02:25 +0100, > Mike Galbraith <efa...@gmx.de> wrote: > > > > [1 <text/plain; ISO-8859-15 (7bit)>] > > On Wed, 2018-08-01 at 06:35 +0100, Marc Zyngier wrote: > > > > > > Is it something that is reproducible with the current mainline (non-RT)? > > > > These waters are a bit muddy, it's config dependent. I'm trying to > > generate a reproducing !RT config for -rc7 as we speak. If I build > > openSUSE/master-default, it does NOT reproduce. That with the bisect > > config just finished building, and.... yup, it reproduced > > (attached). > > Thanks for that.
Cheers. The dependency is THP, which is disabled in RT. --- config.save 2018-05-18 17:59:44.729165480 +0200 +++ .config 2018-08-01 11:00:24.484148316 +0200 @@ -632,7 +632,10 @@ CONFIG_DEFAULT_MMAP_MIN_ADDR=65536 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y CONFIG_MEMORY_FAILURE=y # CONFIG_HWPOISON_INJECT is not set -# CONFIG_TRANSPARENT_HUGEPAGE is not set +CONFIG_TRANSPARENT_HUGEPAGE=y +CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y +# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set +CONFIG_TRANSPARENT_HUGE_PAGECACHE=y CONFIG_CLEANCACHE=y CONFIG_FRONTSWAP=y CONFIG_CMA=y @@ -4306,6 +4309,7 @@ CONFIG_RAS=y # CONFIG_ANDROID is not set # CONFIG_LIBNVDIMM is not set CONFIG_DAX=y +# CONFIG_DEV_DAX is not set CONFIG_NVMEM=y # CONFIG_MTK_EFUSE is not set # CONFIG_QCOM_QFPROM is not set @@ -5175,6 +5179,7 @@ CONFIG_DECOMPRESS_XZ=y CONFIG_DECOMPRESS_LZO=y CONFIG_DECOMPRESS_LZ4=y CONFIG_GENERIC_ALLOCATOR=y +CONFIG_RADIX_TREE_MULTIORDER=y CONFIG_ASSOCIATIVE_ARRAY=y CONFIG_HAS_IOMEM=y CONFIG_HAS_IOPORT_MAP=y
