[git.ipfire.org] IPFire 2.x development tree branch, next, updated. 894eaf5184dda4f851b01d2ed6806d0b0609b321

[git.ipfire.org] IPFire 2.x development tree branch, next, updated. 894eaf5184dda4f851b01d2ed6806d0b0609b321

[Michael Tremer]

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- Log -----------------------------------------------------------------
commit 894eaf5184dda4f851b01d2ed6806d0b0609b321
Author: Michael Tremer <michael.tremer(a)ipfire.org>
Date:   Tue Jun 11 17:07:23 2019 +0000

    smt: Only disable SMT when the kernel thinks it is vulnerable
    
    On virtual machines, it does not make sense to disable SMT for the
    virtual cores. This has to be done by the hypervisor.
    
    Signed-off-by: Michael Tremer <michael.tremer(a)ipfire.org>

-----------------------------------------------------------------------

Summary of changes:
 src/initscripts/system/smt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Difference in files:
diff --git a/src/initscripts/system/smt b/src/initscripts/system/smt
index f85f567fa..f83776c1a 100644
--- a/src/initscripts/system/smt
+++ b/src/initscripts/system/smt
@@ -23,7 +23,7 @@ case "${1}" in
 		# Disable SMT when the processor is vulnerable to Foreshadow or Fallout/ZombieLoad/RIDL
 		for vuln in l1tf mds; do
 			if [ -r "/sys/devices/system/cpu/vulnerabilities/${vuln}" ] && \
-					[ "$(</sys/devices/system/cpu/vulnerabilities/${vuln})" != "Not affected" ]; then
+					[[ "$(</sys/devices/system/cpu/vulnerabilities/${vuln})" =~ "SMT vulnerable" ]]; then
 				# Disable SMT
 				boot_mesg "Disabling Simultaneous Multi-Threading (SMT)..."
 				echo "forceoff" > /sys/devices/system/cpu/smt/control


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