# git rev-parse -q --verify 07a361072378fb3ae116db86244372dbd68f9ea3^{commit} 07a361072378fb3ae116db86244372dbd68f9ea3 already have revision, skipping fetch # git checkout -q -f -B kisskb 07a361072378fb3ae116db86244372dbd68f9ea3 # git clean -qxdf # < git log -1 # commit 07a361072378fb3ae116db86244372dbd68f9ea3 # Author: Daniel Henrique Barboza # Date: Tue Mar 23 17:50:56 2021 -0300 # # powerpc/pseries/hotplug-cpu: Show 'last online CPU' error in dlpar_cpu_offline() # # One of the reasons that dlpar_cpu_offline can fail is when attempting to # offline the last online CPU of the kernel. This can be observed in a # pseries QEMU guest that has hotplugged CPUs. If the user offlines all # other CPUs of the guest, and a hotplugged CPU is now the last online # CPU, trying to reclaim it will fail. # # The current error message in this situation returns rc with -EBUSY and a # generic explanation, e.g.: # # pseries-hotplug-cpu: Failed to offline CPU PowerPC,POWER9, rc: -16 # # EBUSY can be caused by other conditions, such as cpu_hotplug_disable # being true. Throwing a more specific error message for this case, # instead of just "Failed to offline CPU", makes it clearer that the error # is in fact a known error situation instead of other generic/unknown # cause. # # This patch adds a 'last online' check in dlpar_cpu_offline() to catch # the 'last online CPU' offline error, eturning a more informative error # message: # # pseries-hotplug-cpu: Unable to remove last online CPU PowerPC,POWER9 # # Signed-off-by: Daniel Henrique Barboza # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210323205056.52768-2-danielhb413@gmail.com # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 07a361072378fb3ae116db86244372dbd68f9ea3 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_defconfig # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:10:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:12, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5b9f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd4b2cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498997 Bytes = 6346.68 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498998 Bytes = 6346.68 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6499000 Bytes = 6346.68 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498559 Bytes = 6346.25 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498495 Bytes = 6346.19 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498668 Bytes = 6346.36 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6466055 Bytes = 6314.51 KiB = 6.17 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6499656 Bytes = 6347.32 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498981 Bytes = 6346.66 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498590 Bytes = 6346.28 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498154 Bytes = 6345.85 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497791 Bytes = 6345.50 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6499979 Bytes = 6347.64 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6499006 Bytes = 6346.69 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6498592 Bytes = 6346.28 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.12.0-rc3-g07a361072378 Created: Sun Mar 28 04:22:49 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6499605 Bytes = 6347.27 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc-gcc4.9 # Build took: 0:01:22.969224