# git rev-parse -q --verify 1a2a76c2685a29e46d7b37e752ccea7b15aa8e24^{commit}
1a2a76c2685a29e46d7b37e752ccea7b15aa8e24
already have revision, skipping fetch
# git checkout -q -f -B kisskb 1a2a76c2685a29e46d7b37e752ccea7b15aa8e24
# git clean -qxdf
# < git log -1
# commit 1a2a76c2685a29e46d7b37e752ccea7b15aa8e24
# Merge: f41377609a72 0f378d73d429
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Feb 9 12:11:12 2020 -0800
# 
#     Merge tag 'x86-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "A set of fixes for X86:
#     
#        - Ensure that the PIT is set up when the local APIC is disable or
#          configured in legacy mode. This is caused by an ordering issue
#          introduced in the recent changes which skip PIT initialization when
#          the TSC and APIC frequencies are already known.
#     
#        - Handle malformed SRAT tables during early ACPI parsing which caused
#          an infinite loop anda boot hang.
#     
#        - Fix a long standing race in the affinity setting code which affects
#          PCI devices with non-maskable MSI interrupts. The problem is caused
#          by the non-atomic writes of the MSI address (destination APIC id)
#          and data (vector) fields which the device uses to construct the MSI
#          message. The non-atomic writes are mandated by PCI.
#     
#          If both fields change and the device raises an interrupt after
#          writing address and before writing data, then the MSI block
#          constructs a inconsistent message which causes interrupts to be
#          lost and subsequent malfunction of the device.
#     
#          The fix is to redirect the interrupt to the new vector on the
#          current CPU first and then switch it over to the new target CPU.
#          This allows to observe an eventually raised interrupt in the
#          transitional stage (old CPU, new vector) to be observed in the APIC
#          IRR and retriggered on the new target CPU and the new vector.
#     
#          The potential spurious interrupts caused by this are harmless and
#          can in the worst case expose a buggy driver (all handlers have to
#          be able to deal with spurious interrupts as they can and do happen
#          for various reasons).
#     
#        - Add the missing suspend/resume mechanism for the HYPERV hypercall
#          page which prevents resume hibernation on HYPERV guests. This
#          change got lost before the merge window.
#     
#        - Mask the IOAPIC before disabling the local APIC to prevent
#          potentially stale IOAPIC remote IRR bits which cause stale
#          interrupt lines after resume"
#     
#     * tag 'x86-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/apic: Mask IOAPIC entries when disabling the local APIC
#       x86/hyperv: Suspend/resume the hypercall page for hibernation
#       x86/apic/msi: Plug non-maskable MSI affinity race
#       x86/boot: Handle malformed SRAT tables during early ACPI parsing
#       x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 1a2a76c2685a29e46d7b37e752ccea7b15aa8e24
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_omap1_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  omap1_defconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_omap1_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/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:72:12: 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/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec':
/kisskb/src/fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/trace/trace_events.c: In function 'event_create_dir':
/kisskb/src/kernel/trace/trace_events.c:2040:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/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/fs/io_uring.c: In function '__io_sqe_files_update':
/kisskb/src/fs/io_uring.c:5749:13: warning: 'err' 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:1526:34: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1749:46: note: 'linear' was declared here
Completed OK
# rm -rf /kisskb/build/linus_omap1_defconfig_arm
# Build took: 0:01:01.014394