# git rev-parse -q --verify a5b871c91d470326eed3ae0ebd2fc07f3aee9050^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify a5b871c91d470326eed3ae0ebd2fc07f3aee9050^{commit}
a5b871c91d470326eed3ae0ebd2fc07f3aee9050
# git checkout -q -f -B kisskb a5b871c91d470326eed3ae0ebd2fc07f3aee9050
# git clean -qxdf
# < git log -1
# commit a5b871c91d470326eed3ae0ebd2fc07f3aee9050
# Merge: 715d12856953 71723a96b8b1
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Jan 27 10:55:50 2020 -0800
# 
#     Merge tag 'dmaengine-5.6-rc1' of git://git.infradead.org/users/vkoul/slave-dma
#     
#     Pull dmaengine updates from Vinod Koul:
#      "This time we have a bunch of core changes to support dynamic channels,
#       hotplug of controllers, new apis for metadata ops etc along with new
#       drivers for Intel data accelerators, TI K3 UDMA, PLX DMA engine and
#       hisilicon Kunpeng DMA engine. Also usual assorted updates to drivers.
#     
#       Core:
#        - Support for dynamic channels
#        - Removal of various slave wrappers
#        - Make few slave request APIs as private to dmaengine
#        - Symlinks between channels and slaves
#        - Support for hotplug of controllers
#        - Support for metadata_ops for dma_async_tx_descriptor
#        - Reporting DMA cached data amount
#        - Virtual dma channel locking updates
#     
#       New drivers/device/feature support support:
#        - Driver for Intel data accelerators
#        - Driver for TI K3 UDMA
#        - Driver for PLX DMA engine
#        - Driver for hisilicon Kunpeng DMA engine
#        - Support for eDMA support for QorIQ LS1028A in fsl edma driver
#        - Support for cyclic dma in sun4i driver
#        - Support for X1830 in JZ4780 driver"
#     
#     * tag 'dmaengine-5.6-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (62 commits)
#       dmaengine: Create symlinks between DMA channels and slaves
#       dmaengine: hisilicon: Add Kunpeng DMA engine support
#       dmaengine: idxd: add char driver to expose submission portal to userland
#       dmaengine: idxd: connect idxd to dmaengine subsystem
#       dmaengine: idxd: add descriptor manipulation routines
#       dmaengine: idxd: add sysfs ABI for idxd driver
#       dmaengine: idxd: add configuration component of driver
#       dmaengine: idxd: Init and probe for Intel data accelerators
#       dmaengine: add support to dynamic register/unregister of channels
#       dmaengine: break out channel registration
#       x86/asm: add iosubmit_cmds512() based on MOVDIR64B CPU instruction
#       dmaengine: ti: k3-udma: fix spelling mistake "limted" -> "limited"
#       dmaengine: s3c24xx-dma: fix spelling mistake "to" -> "too"
#       dmaengine: Move dma_get_{,any_}slave_channel() to private dmaengine.h
#       dmaengine: Remove dma_request_slave_channel_compat() wrapper
#       dmaengine: Remove dma_device_satisfies_mask() wrapper
#       dt-bindings: fsl-imx-sdma: Add i.MX8MM/i.MX8MN/i.MX8MP compatible string
#       dmaengine: zynqmp_dma: fix burst length configuration
#       dmaengine: sun4i: Add support for cyclic requests with dedicated DMA
#       dmaengine: fsl-qdma: fix duplicated argument to &&
#       ...
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 a5b871c91d470326eed3ae0ebd2fc07f3aee9050
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  randconfig
KCONFIG_SEED=0xE543C9D0
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# yes \n | make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  
You are building kernel with non-retpoline compiler.
Please update your compiler.
make[1]: *** [arch/x86/Makefile:309: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_um-x86_64
# Build took: 0:00:09.392653