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(parent: e898e28) | patch
x86/speculation: Fix SPEC_CTRL write on SMT state change
authorJosh Poimboeuf <jpoimboe@kernel.org>
Tue, 14 Jun 2022 21:16:07 +0000 (23:16 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 23 Jul 2022 10:54:07 +0000 (12:54 +0200)
commit2069bd0e6f5b0c4ded790ff34b8ee5df909b51e0
tree735f859816c7227b71eadbc9797806c21347de8etree | snapshot
parente898e28762f830592d723ddb34db8a86735a2e70commit | diff
x86/speculation: Fix SPEC_CTRL write on SMT state change

commit 56aa4d221f1ee2c3a49b45b800778ec6e0ab73c5 upstream.

If the SMT state changes, SSBD might get accidentally disabled.  Fix
that.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kernel/cpu/bugs.c diff | blob | history
Domain: System / Kernel;