# git rev-parse -q --verify eb094f06963bb0fd8134c6a9b805d4ad0002a7d4^{commit}
eb094f06963bb0fd8134c6a9b805d4ad0002a7d4
already have revision, skipping fetch
# git checkout -q -f -B kisskb eb094f06963bb0fd8134c6a9b805d4ad0002a7d4
# git clean -qxdf
# < git log -1
# commit eb094f06963bb0fd8134c6a9b805d4ad0002a7d4
# Merge: 100d46bd72ec 012206a822a8
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Nov 12 10:53:24 2019 -0800
# 
#     Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 TSX Async Abort and iTLB Multihit mitigations from Thomas Gleixner:
#      "The performance deterioration departement is not proud at all of
#       presenting the seventh installment of speculation mitigations and
#       hardware misfeature workarounds:
#     
#        1) TSX Async Abort (TAA) - 'The Annoying Affair'
#     
#           TAA is a hardware vulnerability that allows unprivileged
#           speculative access to data which is available in various CPU
#           internal buffers by using asynchronous aborts within an Intel TSX
#           transactional region.
#     
#           The mitigation depends on a microcode update providing a new MSR
#           which allows to disable TSX in the CPU. CPUs which have no
#           microcode update can be mitigated by disabling TSX in the BIOS if
#           the BIOS provides a tunable.
#     
#           Newer CPUs will have a bit set which indicates that the CPU is not
#           vulnerable, but the MSR to disable TSX will be available
#           nevertheless as it is an architected MSR. That means the kernel
#           provides the ability to disable TSX on the kernel command line,
#           which is useful as TSX is a truly useful mechanism to accelerate
#           side channel attacks of all sorts.
#     
#        2) iITLB Multihit (NX) - 'No eXcuses'
#     
#           iTLB Multihit is an erratum where some Intel processors may incur
#           a machine check error, possibly resulting in an unrecoverable CPU
#           lockup, when an instruction fetch hits multiple entries in the
#           instruction TLB. This can occur when the page size is changed
#           along with either the physical address or cache type. A malicious
#           guest running on a virtualized system can exploit this erratum to
#           perform a denial of service attack.
#     
#           The workaround is that KVM marks huge pages in the extended page
#           tables as not executable (NX). If the guest attempts to execute in
#           such a page, the page is broken down into 4k pages which are
#           marked executable. The workaround comes with a mechanism to
#           recover these shattered huge pages over time.
#     
#       Both issues come with full documentation in the hardware
#       vulnerabilities section of the Linux kernel user's and administrator's
#       guide.
#     
#       Thanks to all patch authors and reviewers who had the extraordinary
#       priviledge to be exposed to this nuisance.
#     
#       Special thanks to Borislav Petkov for polishing the final TAA patch
#       set and to Paolo Bonzini for shepherding the KVM iTLB workarounds and
#       providing also the backports to stable kernels for those!"
#     
#     * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs
#       Documentation: Add ITLB_MULTIHIT documentation
#       kvm: x86: mmu: Recovery of shattered NX large pages
#       kvm: Add helper function for creating VM worker threads
#       kvm: mmu: ITLB_MULTIHIT mitigation
#       cpu/speculation: Uninline and export CPU mitigations helpers
#       x86/cpu: Add Tremont to the cpu vulnerability whitelist
#       x86/bugs: Add ITLB_MULTIHIT bug infrastructure
#       x86/tsx: Add config options to set tsx=on|off|auto
#       x86/speculation/taa: Add documentation for TSX Async Abort
#       x86/tsx: Add "auto" option to the tsx= cmdline parameter
#       kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
#       x86/speculation/taa: Add sysfs reporting for TSX Async Abort
#       x86/speculation/taa: Add mitigation for TSX Async Abort
#       x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default
#       x86/cpu: Add a helper function x86_read_arch_cap_msr()
#       x86/msr: Add the IA32_TSX_CTRL MSR
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-ld --version
# < git log --format=%s --max-count=1 eb094f06963bb0fd8134c6a9b805d4ad0002a7d4
# < make -s -j 32 ARCH=sh O=/kisskb/build/linus_sh7724_generic_defconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-  sh7724_generic_defconfig
# make -s -j 32 ARCH=sh O=/kisskb/build/linus_sh7724_generic_defconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-  
  Generating include/generated/machtypes.h
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S: Assembler messages:
/kisskb/src/arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:385: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:388: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/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/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/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/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/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr':
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:372:16: note: 'data' was declared here
/kisskb/src/drivers/sh/clk/cpg.c: In function 'r8':
/kisskb/src/drivers/sh/clk/cpg.c:41:2: warning: passing argument 1 of 'ioread8' discards 'const' qualifier from pointer target type [enabled by default]
/kisskb/src/include/asm-generic/iomap.h:29:21: note: expected 'void *' but argument is of type 'const void *'
/kisskb/src/drivers/sh/clk/cpg.c: In function 'r16':
/kisskb/src/drivers/sh/clk/cpg.c:46:2: warning: passing argument 1 of 'ioread16' discards 'const' qualifier from pointer target type [enabled by default]
/kisskb/src/include/asm-generic/iomap.h:30:21: note: expected 'void *' but argument is of type 'const void *'
/kisskb/src/drivers/sh/clk/cpg.c: In function 'r32':
/kisskb/src/drivers/sh/clk/cpg.c:51:2: warning: passing argument 1 of 'ioread32' discards 'const' qualifier from pointer target type [enabled by default]
/kisskb/src/include/asm-generic/iomap.h:32:21: note: expected 'void *' but argument is of type 'const void *'
  Kernel: arch/sh/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sh7724_generic_defconfig_sh4
# Build took: 0:00:26.755873