函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\bugs.c Create Date:2022-07-27 08:56:40
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__ssb_select_mitigation

函数原型：static enum ssb_mitigation __init __ssb_select_mitigation(void)

返回类型：enum ssb_mitigation

参数：无

1021  mode等于SPEC_STORE_BYPASS_NONE
1024  如果非boot_cpu_has(Speculative Store Bypass Disable )则返回:mode
1027  cmd等于ssb_parse_cmdline()
1028  如果非boot_cpu_has_bug(CPU is affected by speculative store bypass attack )且cmd恒等于SPEC_STORE_BYPASS_CMD_NONE或cmd恒等于SPEC_STORE_BYPASS_CMD_AUTO的值则返回:mode
1034  当:cmd恒等于SPEC_STORE_BYPASS_CMD_AUTO
1035  当:cmd恒等于SPEC_STORE_BYPASS_CMD_SECCOMP
1040  如果IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_SECCOMP)则mode等于SPEC_STORE_BYPASS_SECCOMP
1042  否则mode等于SPEC_STORE_BYPASS_PRCTL
1044  退出
1045  当:cmd恒等于SPEC_STORE_BYPASS_CMD_ON
1046  mode等于SPEC_STORE_BYPASS_DISABLE
1047  退出
1048  当:cmd恒等于SPEC_STORE_BYPASS_CMD_PRCTL
1049  mode等于SPEC_STORE_BYPASS_PRCTL
1050  退出
1051  当:cmd恒等于SPEC_STORE_BYPASS_CMD_NONE
1052  退出
1060  如果static_cpu_has("" Speculative Store Bypass Disable )或static_cpu_has("" Speculative Store Bypass Disable )则
1062  The vendor and possibly platform specific bits which can be modified in* x86_spec_ctrl_base.或等于Speculative Store Bypass Disable
1071  如果mode恒等于SPEC_STORE_BYPASS_DISABLE则
1072  setup_force_cpu_cap("" Disable Speculative Store Bypass. )
1077  如果非static_cpu_has("" Speculative Store Bypass Disable )且非static_cpu_has("" Speculative Store Bypass Disable )则
1079  x86_amd_ssb_disable()
1080  否则
1081  The base value of the SPEC_CTRL MSR that always has to be preserved. 或等于Speculative Store Bypass Disable
1082  wrmsrl(Speculation Control , The base value of the SPEC_CTRL MSR that always has to be preserved. )
1086  返回:mode
调用者
名称描述
ssb_select_mitigation