The following commit has been merged into the x86/bugs branch of tip:
Commit-ID: 1da8d2172ce5175118929363fe568e41f24ad3d6
Gitweb: https://git.kernel.org/tip/1da8d2172ce5175118929363fe568e41f24ad3d6
Author: Breno Leitao <leitao@xxxxxxxxxx>
AuthorDate: Tue, 21 Nov 2023 08:07:35 -08:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Wed, 10 Jan 2024 10:52:29 +01:00
x86/bugs: Rename CONFIG_CPU_IBRS_ENTRY => CONFIG_MITIGATION_IBRS_ENTRY
Step 8/10 of the namespace unification of CPU mitigations related Kconfig options.
Suggested-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231121160740.1249350-9-leitao@xxxxxxxxxx
---
arch/x86/Kconfig | 2 +-
arch/x86/entry/calling.h | 4 ++--
arch/x86/kernel/cpu/bugs.c | 4 ++--
3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 77b8769..60d38df 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2561,7 +2561,7 @@ config MITIGATION_IBPB_ENTRY
help
Compile the kernel with support for the retbleed=ibpb mitigation.
-config CPU_IBRS_ENTRY
+config MITIGATION_IBRS_ENTRY
bool "Enable IBRS on kernel entry"
depends on CPU_SUP_INTEL && X86_64
default y
diff --git a/arch/x86/entry/calling.h b/arch/x86/entry/calling.h
index 7ac2d6f..39e069b 100644
--- a/arch/x86/entry/calling.h
+++ b/arch/x86/entry/calling.h
@@ -303,7 +303,7 @@ For 32-bit we have the following conventions - kernel is built with
* Assumes x86_spec_ctrl_{base,current} to have SPEC_CTRL_IBRS set.
*/
.macro IBRS_ENTER save_reg
-#ifdef CONFIG_CPU_IBRS_ENTRY
+#ifdef CONFIG_MITIGATION_IBRS_ENTRY
ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_KERNEL_IBRS
movl $MSR_IA32_SPEC_CTRL, %ecx
@@ -332,7 +332,7 @@ For 32-bit we have the following conventions - kernel is built with
* regs. Must be called after the last RET.
*/
.macro IBRS_EXIT save_reg
-#ifdef CONFIG_CPU_IBRS_ENTRY
+#ifdef CONFIG_MITIGATION_IBRS_ENTRY
ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_KERNEL_IBRS
movl $MSR_IA32_SPEC_CTRL, %ecx
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 2580368..e11bacb 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -1439,7 +1439,7 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void)
return SPECTRE_V2_CMD_AUTO;
}
- if (cmd == SPECTRE_V2_CMD_IBRS && !IS_ENABLED(CONFIG_CPU_IBRS_ENTRY)) {
+ if (cmd == SPECTRE_V2_CMD_IBRS && !IS_ENABLED(CONFIG_MITIGATION_IBRS_ENTRY)) {
pr_err("%s selected but not compiled in. Switching to AUTO select\n",
mitigation_options[i].option);
return SPECTRE_V2_CMD_AUTO;
@@ -1565,7 +1565,7 @@ static void __init spectre_v2_select_mitigation(void)
break;
}
- if (IS_ENABLED(CONFIG_CPU_IBRS_ENTRY) &&
+ if (IS_ENABLED(CONFIG_MITIGATION_IBRS_ENTRY) &&
boot_cpu_has_bug(X86_BUG_RETBLEED) &&
retbleed_cmd != RETBLEED_CMD_OFF &&
retbleed_cmd != RETBLEED_CMD_STUFF &&
|