# git gc
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# git rev-parse -q --verify a5dbd76a89423eca9f8de338350f2666aacfb432^{commit}
a5dbd76a89423eca9f8de338350f2666aacfb432
already have revision, skipping fetch
# git checkout -q -f -B kisskb a5dbd76a89423eca9f8de338350f2666aacfb432
# git clean -qxdf
# < git log -1
# commit a5dbd76a89423eca9f8de338350f2666aacfb432
# Merge: 61ca6c78295e dd35a0933269
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Aug 4 08:57:08 2024 -0700
# 
#     Merge tag 'x86-urgent-2024-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#     
#      - Prevent a deadlock on cpu_hotplug_lock in the aperf/mperf driver.
#     
#        A recent change in the ACPI code which consolidated code pathes moved
#        the invocation of init_freq_invariance_cppc() to be moved to a CPU
#        hotplug handler. The first invocation on AMD CPUs ends up enabling a
#        static branch which dead locks because the static branch enable tries
#        to acquire cpu_hotplug_lock but that lock is already held write by
#        the hotplug machinery.
#     
#        Use static_branch_enable_cpuslocked() instead and take the hotplug
#        lock read for the Intel code path which is invoked from the
#        architecture code outside of the CPU hotplug operations.
#     
#      - Fix the number of reserved bits in the sev_config structure bit field
#        so that the bitfield does not exceed 64 bit.
#     
#      - Add missing Zen5 model numbers
#     
#      - Fix the alignment assumptions of pti_clone_pgtable() and
#        clone_entry_text() on 32-bit:
#     
#        The code assumes PMD aligned code sections, but on 32-bit the kernel
#        entry text is not PMD aligned. So depending on the code size and
#        location, which is configuration and compiler dependent, entry text
#        can cross a PMD boundary. As the start is not PMD aligned adding PMD
#        size to the start address is larger than the end address which
#        results in partially mapped entry code for user space. That causes
#        endless recursion on the first entry from userspace (usually #PF).
#     
#        Cure this by aligning the start address in the addition so it ends up
#        at the next PMD start address.
#     
#        clone_entry_text() enforces PMD mapping, but on 32-bit the tail might
#        eventually be PTE mapped, which causes a map fail because the PMD for
#        the tail is not a large page mapping. Use PTI_LEVEL_KERNEL_IMAGE for
#        the clone() invocation which resolves to PTE on 32-bit and PMD on
#        64-bit.
#     
#      - Zero the 8-byte case for get_user() on range check failure on 32-bit
#     
#        The recend consolidation of the 8-byte get_user() case broke the
#        zeroing in the failure case again. Establish it by clearing ECX
#        before the range check and not afterwards as that obvioulsy can't be
#        reached when the range check fails
#     
#     * tag 'x86-urgent-2024-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/uaccess: Zero the 8-byte get_range case on failure on 32-bit
#       x86/mm: Fix pti_clone_entry_text() for i386
#       x86/mm: Fix pti_clone_pgtable() alignment assumption
#       x86/setup: Parse the builtin command line before merging
#       x86/CPU/AMD: Add models 0x60-0x6f to the Zen5 range
#       x86/sev: Fix __reserved field in sev_config
#       x86/aperfmperf: Fix deadlock on cpu_hotplug_lock
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/m68k-linux/bin/m68k-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/m68k-linux/bin/m68k-linux-ld --version
# < git log --format=%s --max-count=1 a5dbd76a89423eca9f8de338350f2666aacfb432
# make -s -j 24 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/m68k-linux/bin/m68k-linux-  m5272c3_defconfig
# < make -s -j 24 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/m68k-linux/bin/m68k-linux-  help
# make -s -j 24 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/m68k-linux/bin/m68k-linux-  olddefconfig
# make -s -j 24 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/m68k-linux/bin/m68k-linux-  
Completed OK
# rm -rf /kisskb/build/linus_m5272c3_defconfig_m68k-gcc13
# Build took: 0:06:50.947720