# 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/sh4-linux/bin/sh4-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-ld --version
# < git log --format=%s --max-count=1 4535e1a4174c4111d92c5a9a21e542d232e0fcaa
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  se7750_defconfig
# < make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  help
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  olddefconfig
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  
  Generating include/generated/machtypes.h
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sh/mm/cache-sh4.c:384:13: warning: no previous prototype for 'sh4_cache_init' [-Wmissing-prototypes]
  384 | void __init sh4_cache_init(void)
      |             ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/cpu/init.c:99:29: warning: no previous prototype for 'l2_cache_init' [-Wmissing-prototypes]
   99 | void __attribute__ ((weak)) l2_cache_init(void)
      |                             ^~~~~~~~~~~~~
/kisskb/src/arch/sh/mm/flush-sh4.c:106:13: warning: no previous prototype for 'sh4__flush_region_init' [-Wmissing-prototypes]
  106 | void __init sh4__flush_region_init(void)
      |             ^~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/cpu/sh4/fpu.c:389:6: warning: no previous prototype for 'float_raise' [-Wmissing-prototypes]
  389 | void float_raise(unsigned int flags)
      |      ^~~~~~~~~~~
/kisskb/src/arch/sh/kernel/cpu/sh4/fpu.c:394:5: warning: no previous prototype for 'float_rounding_mode' [-Wmissing-prototypes]
  394 | int float_rounding_mode(void)
      |     ^~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/mm/pgtable.c:10:6: warning: no previous prototype for 'pgd_ctor' [-Wmissing-prototypes]
   10 | void pgd_ctor(void *x)
      |      ^~~~~~~~
/kisskb/src/arch/sh/mm/pgtable.c:32:8: warning: no previous prototype for 'pgd_alloc' [-Wmissing-prototypes]
   32 | pgd_t *pgd_alloc(struct mm_struct *mm)
      |        ^~~~~~~~~
/kisskb/src/arch/sh/mm/pgtable.c:37:6: warning: no previous prototype for 'pgd_free' [-Wmissing-prototypes]
   37 | void pgd_free(struct mm_struct *mm, pgd_t *pgd)
      |      ^~~~~~~~
/kisskb/src/arch/sh/mm/tlbex_32.c:22:1: warning: no previous prototype for 'handle_tlbmiss' [-Wmissing-prototypes]
   22 | handle_tlbmiss(struct pt_regs *regs, unsigned long error_code,
      | ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/return_address.c:49:7: warning: no previous prototype for 'return_address' [-Wmissing-prototypes]
   49 | void *return_address(unsigned int depth)
      |       ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/sys_sh.c:58:16: warning: no previous prototype for 'sys_cacheflush' [-Wmissing-prototypes]
   58 | asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len, int op)
      |                ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/traps_32.c:735:6: warning: no previous prototype for 'per_cpu_trap_init' [-Wmissing-prototypes]
  735 | void per_cpu_trap_init(void)
      |      ^~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/hw_breakpoint.c:135:5: warning: no previous prototype for 'arch_bp_generic_fields' [-Wmissing-prototypes]
  135 | int arch_bp_generic_fields(int sh_len, int sh_type,
      |     ^~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/boot/compressed/cache.c:2:5: warning: no previous prototype for 'cache_control' [-Wmissing-prototypes]
    2 | int cache_control(unsigned int command)
      |     ^~~~~~~~~~~~~
/kisskb/src/arch/sh/boot/compressed/misc.c:115:6: warning: no previous prototype for 'ftrace_stub' [-Wmissing-prototypes]
  115 | void ftrace_stub(void)
      |      ^~~~~~~~~~~
/kisskb/src/arch/sh/boot/compressed/misc.c:118:6: warning: no previous prototype for 'arch_ftrace_ops_list_func' [-Wmissing-prototypes]
  118 | void arch_ftrace_ops_list_func(void)
      |      ^~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/boot/compressed/misc.c:128:6: warning: no previous prototype for 'decompress_kernel' [-Wmissing-prototypes]
  128 | void decompress_kernel(void)
      |      ^~~~~~~~~~~~~~~~~
  Kernel: arch/sh/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_se7750_defconfig_sh4-gcc13
# Build took: 0:00:29.940722