# git rev-parse -q --verify d853adc7adf601d7d6823afe3ed396065a3e08d1^{commit} d853adc7adf601d7d6823afe3ed396065a3e08d1 already have revision, skipping fetch # git checkout -q -f -B kisskb d853adc7adf601d7d6823afe3ed396065a3e08d1 # git clean -qxdf # < git log -1 # commit d853adc7adf601d7d6823afe3ed396065a3e08d1 # Author: Alexey Kardashevskiy # Date: Thu Oct 21 00:23:15 2021 +1100 # # powerpc/pseries/iommu: Create huge DMA window if no MMIO32 is present # # The iommu_init_table() helper takes an address range to reserve in # the IOMMU table being initialized to exclude MMIO addresses, this is # useful if the window stretches far beyond 4GB (although wastes some TCEs). # At the moment the code searches for such MMIO32 range and fails if none # found which is considered a problem while it really is not: it is actually # better as this says there is no MMIO32 to reserve and we can use # usually wasted TCEs. Furthermore PHYP never actually allows creating # windows starting at busaddress=0 so this MMIO32 range is never useful. # # This removes error exit and initializes the table with zero range if # no MMIO32 is detected. # # Fixes: 381ceda88c4c ("powerpc/pseries/iommu: Make use of DDW for indirect mapping") # Signed-off-by: Alexey Kardashevskiy # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20211020132315.2287178-5-aik@ozlabs.ru # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 d853adc7adf601d7d6823afe3ed396065a3e08d1 # < make -s -j 24 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- x86_64_defconfig # < make -s -j 24 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 24 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 24 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- Completed OK # rm -rf /kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 # Build took: 0:03:09.274079