# git rev-parse -q --verify 4fe34d61a3a9d9ed954cbc90713506a7598d6b36^{commit}
4fe34d61a3a9d9ed954cbc90713506a7598d6b36
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4fe34d61a3a9d9ed954cbc90713506a7598d6b36
# git clean -qxdf
# < git log -1
# commit 4fe34d61a3a9d9ed954cbc90713506a7598d6b36
# Merge: 81c4bc31c4cd 228d120051a2
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Oct 20 06:31:14 2019 -0400
# 
#     Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "A small set of x86 fixes:
#     
#        - Prevent a NULL pointer dereference in the X2APIC code in case of a
#          CPU hotplug failure.
#     
#        - Prevent boot failures on HP superdome machines by invalidating the
#          level2 kernel pagetable entries outside of the kernel area as
#          invalid so BIOS reserved space won't be touched unintentionally.
#     
#          Also ensure that memory holes are rounded up to the next PMD
#          boundary correctly.
#     
#        - Enable X2APIC support on Hyper-V to prevent boot failures.
#     
#        - Set the paravirt name when running on Hyper-V for consistency
#     
#        - Move a function under the appropriate ifdef guard to prevent build
#          warnings"
#     
#     * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/boot/acpi: Move get_cmdline_acpi_rsdp() under #ifdef guard
#       x86/hyperv: Set pv_info.name to "Hyper-V"
#       x86/apic/x2apic: Fix a NULL pointer deref when handling a dying cpu
#       x86/hyperv: Make vapic support x2apic mode
#       x86/boot/64: Round memory hole size up to next PMD page
#       x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area
# < /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 4fe34d61a3a9d9ed954cbc90713506a7598d6b36
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_ppc64e_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc64e_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_ppc64e_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' 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/net/bridge/br_netlink.c: In function 'br_afspec.isra.30':
/kisskb/src/net/bridge/br_netlink.c:648:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/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/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/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/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
WARNING: vmlinux.o (.PPC.EMB.apuinfo): unexpected non-allocatable section.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.

INFO: Uncompressed kernel (size 0xbc7400) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xc00000)
Image Name:   Linux-5.4.0-rc3-g4fe34d61a3a9
Created:      Sun Oct 20 22:35:37 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    4910494 Bytes = 4795.40 KiB = 4.68 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/linus_ppc64e_defconfig_powerpc-gcc4.6
# Build took: 0:00:51.494792