# git rev-parse -q --verify 4535e1a4174c4111d92c5a9a21e542d232e0fcaa^{commit}
4535e1a4174c4111d92c5a9a21e542d232e0fcaa
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4535e1a4174c4111d92c5a9a21e542d232e0fcaa
# git clean -qxdf
# < git log -1
# commit 4535e1a4174c4111d92c5a9a21e542d232e0fcaa
# Author: Borislav Petkov (AMD) <bp@alien8.de>
# Date:   Thu Mar 28 13:59:05 2024 +0100
# 
#     x86/bugs: Fix the SRSO mitigation on Zen3/4
#     
#     The original version of the mitigation would patch in the calls to the
#     untraining routines directly.  That is, the alternative() in UNTRAIN_RET
#     will patch in the CALL to srso_alias_untrain_ret() directly.
#     
#     However, even if commit e7c25c441e9e ("x86/cpu: Cleanup the untrain
#     mess") meant well in trying to clean up the situation, due to micro-
#     architectural reasons, the untraining routine srso_alias_untrain_ret()
#     must be the target of a CALL instruction and not of a JMP instruction as
#     it is done now.
#     
#     Reshuffle the alternative macros to accomplish that.
#     
#     Fixes: e7c25c441e9e ("x86/cpu: Cleanup the untrain mess")
#     Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
#     Reviewed-by: Ingo Molnar <mingo@kernel.org>
#     Cc: stable@kernel.org
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 4535e1a4174c4111d92c5a9a21e542d232e0fcaa
# make -s -j 160 ARCH=x86_64 O=/kisskb/build/linus_allmodconfig_x86_64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig 
# < make -s -j 160 ARCH=x86_64 O=/kisskb/build/linus_allmodconfig_x86_64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 160 ARCH=x86_64 O=/kisskb/build/linus_allmodconfig_x86_64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 160 ARCH=x86_64 O=/kisskb/build/linus_allmodconfig_x86_64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/linus_allmodconfig_x86_64-gcc13
# Build took: 0:22:49.732037