# git rev-parse -q --verify 4c6be9192dbbe4aff7d42057d7864df8a5f3baf2^{commit} 4c6be9192dbbe4aff7d42057d7864df8a5f3baf2 already have revision, skipping fetch # git checkout -q -f -B kisskb 4c6be9192dbbe4aff7d42057d7864df8a5f3baf2 # git clean -qxdf # < git log -1 # commit 4c6be9192dbbe4aff7d42057d7864df8a5f3baf2 # Author: Nicholas Piggin # Date: Fri Sep 13 22:07:01 2019 +1000 # # powerpc/64s: system call support for scv/rfscv instructions # # Add support for the scv instruction on POWER9 and later CPUs. # # For now this implements the zeroth scv vector 'scv 0', as identical # to 'sc' system calls, with the exception that lr is not preserved, and # it is 64-bit only. There may yet be changes made to this ABI, so it's # for testing only. # # rfscv is implemented to return from scv type system calls. It can not # be used to return from sc system calls because those are defined to # preserve lr. # # In a comparison of getpid syscall, the test program had scv taking # about 3 more cycles in user mode (92 vs 89 for sc), due to lr handling. # getpid syscall throughput on POWER9 is improved by 33%, mostly due to # reducing mtmsr and mtspr. # # Signed-off-by: Nicholas Piggin # < /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 4c6be9192dbbe4aff7d42057d7864df8a5f3baf2 # < make -s -j 24 ARCH=powerpc O=/kisskb/build/npiggin_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/npiggin_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/npiggin_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/npiggin_mpc85xx_smp_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:11:0, 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 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd38978) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28174) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516957 Bytes = 6364.22 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6518506 Bytes = 6365.73 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516865 Bytes = 6364.13 KiB = 6.21 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516964 Bytes = 6364.22 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6486080 Bytes = 6334.06 KiB = 6.19 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6518531 Bytes = 6365.75 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6518525 Bytes = 6365.75 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516864 Bytes = 6364.12 KiB = 6.21 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6518615 Bytes = 6365.83 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516996 Bytes = 6364.25 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516987 Bytes = 6364.25 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6517275 Bytes = 6364.53 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516923 Bytes = 6364.18 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516961 Bytes = 6364.22 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516962 Bytes = 6364.22 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.6.0-rc2-g4c6be9192dbb Created: Wed May 13 19:33:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6516941 Bytes = 6364.20 KiB = 6.22 MiB Load Address: 00e00000 Entry Point: 00e00314 Completed OK # rm -rf /kisskb/build/npiggin_mpc85xx_smp_defconfig_powerpc-gcc4.9 # Build took: 0:02:36.500141