This is a note to let you know that I've just added the patch titled
x86/bugs: Change commas to semicolons in 'spectre_v2' sysfs file
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-bugs-change-commas-to-semicolons-in-spectre_v2-sysfs-file.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7ff6d29f11210b8f65d4a2317b5b1251f37156cc Mon Sep 17 00:00:00 2001
From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Date: Fri, 5 Apr 2024 11:14:13 -0700
Subject: x86/bugs: Change commas to semicolons in 'spectre_v2' sysfs file
From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
commit 0cd01ac5dcb1e18eb18df0f0d05b5de76522a437 upstream.
Change the format of the 'spectre_v2' vulnerabilities sysfs file
slightly by converting the commas to semicolons, so that mitigations for
future variants can be grouped together and separated by commas.
Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Signed-off-by: Daniel Sneddon <daniel.sneddon@xxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Daniel Sneddon <daniel.sneddon@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/bugs.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -2674,15 +2674,15 @@ static char *stibp_state(void)
switch (spectre_v2_user_stibp) {
case SPECTRE_V2_USER_NONE:
- return ", STIBP: disabled";
+ return "; STIBP: disabled";
case SPECTRE_V2_USER_STRICT:
- return ", STIBP: forced";
+ return "; STIBP: forced";
case SPECTRE_V2_USER_STRICT_PREFERRED:
- return ", STIBP: always-on";
+ return "; STIBP: always-on";
case SPECTRE_V2_USER_PRCTL:
case SPECTRE_V2_USER_SECCOMP:
if (static_key_enabled(&switch_to_cond_stibp))
- return ", STIBP: conditional";
+ return "; STIBP: conditional";
}
return "";
}
@@ -2691,10 +2691,10 @@ static char *ibpb_state(void)
{
if (boot_cpu_has(X86_FEATURE_IBPB)) {
if (static_key_enabled(&switch_mm_always_ibpb))
- return ", IBPB: always-on";
+ return "; IBPB: always-on";
if (static_key_enabled(&switch_mm_cond_ibpb))
- return ", IBPB: conditional";
- return ", IBPB: disabled";
+ return "; IBPB: conditional";
+ return "; IBPB: disabled";
}
return "";
}
@@ -2704,11 +2704,11 @@ static char *pbrsb_eibrs_state(void)
if (boot_cpu_has_bug(X86_BUG_EIBRS_PBRSB)) {
if (boot_cpu_has(X86_FEATURE_RSB_VMEXIT_LITE) ||
boot_cpu_has(X86_FEATURE_RSB_VMEXIT))
- return ", PBRSB-eIBRS: SW sequence";
+ return "; PBRSB-eIBRS: SW sequence";
else
- return ", PBRSB-eIBRS: Vulnerable";
+ return "; PBRSB-eIBRS: Vulnerable";
} else {
- return ", PBRSB-eIBRS: Not affected";
+ return "; PBRSB-eIBRS: Not affected";
}
}
@@ -2727,9 +2727,9 @@ static ssize_t spectre_v2_show_state(cha
return sysfs_emit(buf, "%s%s%s%s%s%s%s\n",
spectre_v2_strings[spectre_v2_enabled],
ibpb_state(),
- boot_cpu_has(X86_FEATURE_USE_IBRS_FW) ? ", IBRS_FW" : "",
+ boot_cpu_has(X86_FEATURE_USE_IBRS_FW) ? "; IBRS_FW" : "",
stibp_state(),
- boot_cpu_has(X86_FEATURE_RSB_CTXSW) ? ", RSB filling" : "",
+ boot_cpu_has(X86_FEATURE_RSB_CTXSW) ? "; RSB filling" : "",
pbrsb_eibrs_state(),
spectre_v2_module_string());
}
Patches currently in stable-queue which might be from jpoimboe@xxxxxxxxxx are
queue-5.15/x86-rfds-mitigate-register-file-data-sampling-rfds.patch
queue-5.15/x86-bhi-define-spec_ctrl_bhi_dis_s.patch
queue-5.15/x86-bhi-add-support-for-clearing-branch-history-at-syscall-entry.patch
queue-5.15/x86-bhi-mitigate-kvm-by-default.patch
queue-5.15/kvm-x86-export-rfds_no-and-rfds_clear-to-guests.patch
queue-5.15/x86-bhi-enumerate-branch-history-injection-bhi-bug.patch
queue-5.15/x86-syscall-don-t-force-use-of-indirect-calls-for-system-calls.patch
queue-5.15/documentation-hw-vuln-add-documentation-for-rfds.patch
queue-5.15/x86-bugs-change-commas-to-semicolons-in-spectre_v2-sysfs-file.patch
queue-5.15/x86-bhi-add-bhi-mitigation-knob.patch
queue-5.15/kvm-x86-add-bhi_no.patch
