# git rev-parse -q --verify b6a4fec7d708dcc769f908ce7b308a0de8b3ad8f^{commit} b6a4fec7d708dcc769f908ce7b308a0de8b3ad8f already have revision, skipping fetch # git checkout -q -f -B kisskb b6a4fec7d708dcc769f908ce7b308a0de8b3ad8f # git clean -qxdf # < git log -1 # commit b6a4fec7d708dcc769f908ce7b308a0de8b3ad8f # Author: Aneesh Kumar K.V # Date: Tue Sep 3 18:04:52 2019 +0530 # # powerpc/nvdimm: use H_SCM_QUERY hcall on H_OVERLAP error # # Right now we force an unbind of SCM memory at drcindex on H_OVERLAP error. # This really slows down operations like kexec where we get the H_OVERLAP # error because we don't go through a full hypervisor re init. # # H_OVERLAP error for a H_SCM_BIND_MEM hcall indicates that SCM memory at # drc index is already bound. Since we don't specify a logical memory # address for bind hcall, we can use the H_SCM_QUERY hcall to query # the already bound logical address. # # Boot time difference with and without patch is: # # [ 5.583617] IOMMU table initialized, virtual merging enabled # [ 5.603041] papr_scm ibm,persistent-memory:ibm,pmemory@44104001: Retrying bind after unbinding # [ 301.514221] papr_scm ibm,persistent-memory:ibm,pmemory@44108001: Retrying bind after unbinding # [ 340.057238] hv-24x7: read 1530 catalog entries, created 537 event attrs (0 failures), 275 descs # # after fix # # [ 5.101572] IOMMU table initialized, virtual merging enabled # [ 5.116984] papr_scm ibm,persistent-memory:ibm,pmemory@44104001: Querying SCM details # [ 5.117223] papr_scm ibm,persistent-memory:ibm,pmemory@44108001: Querying SCM details # [ 5.120530] hv-24x7: read 1530 catalog entries, created 537 event attrs (0 failures), 275 descs # # Signed-off-by: Aneesh Kumar K.V # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20190903123452.28620-2-aneesh.kumar@linux.ibm.com # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 b6a4fec7d708dcc769f908ce7b308a0de8b3ad8f # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mpc85xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': /kisskb/src/sound/soc/codecs/wm8960.c:800:70: warning: 'j' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c:797:68: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2591:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/soc-pcm.c: In function 'soc_pcm_trigger': /kisskb/src/sound/soc/soc-pcm.c:1074:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/soc-pcm.c: In function 'soc_pcm_bespoke_trigger': /kisskb/src/sound/soc/soc-pcm.c:1092:9: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here /kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here /kisskb/src/drivers/usb/core/devio.c: In function 'async_completed': /kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] /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 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc318fc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5907639 Bytes = 5769.18 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5907257 Bytes = 5768.81 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5906582 Bytes = 5768.15 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5907866 Bytes = 5769.40 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5906580 Bytes = 5768.14 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5907620 Bytes = 5769.16 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002e8 INFO: Uncompressed kernel (size 0xc21134) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5906514 Bytes = 5768.08 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5908297 Bytes = 5769.82 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5907759 Bytes = 5769.30 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5909486 Bytes = 5770.98 KiB = 5.64 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5909408 Bytes = 5770.91 KiB = 5.64 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5908668 Bytes = 5770.18 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5875511 Bytes = 5737.80 KiB = 5.60 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5906555 Bytes = 5768.12 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5907262 Bytes = 5768.81 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.3.0-gb6a4fec7d708 Created: Tue Sep 24 21:20:15 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5906519 Bytes = 5768.08 KiB = 5.63 MiB Load Address: 00d00000 Entry Point: 00d002e8 Completed OK # rm -rf /kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc4.6 # Build took: 0:01:55.932004