Of course it isn't until after I hit send to realize I missed the "-v2" flag when I generated these patches! Sorry for the confusion! On 10/28/24 16:50, Daniel Sneddon wrote: > There are several mitigations that use the VERW instruction to clean > up internal CPU buffers. Currently, each of these mitigations is > treated independently, but if VERW is needed for one of the > mitigations, it's on for all of them. This can lead to some confusion > if a user tries to disable one of the mitigations, but it is left > enabled for one of the others. The user needs to disable all 4 VERW- > based mitigations. Warn the user when one or more VERW mitigations are > disabled but not all of them. While we're messing with VERW > mitigations, might as well simplify them and remove the need to call > each of them twice. > > V2: > Dropped the new knob previously introduced in the first patch (Borislav) > Add warning if not all 4 mitigations states match (Borislav) > Removed extra comment (Josh) > Code clean-up (Josh) > > > Daniel Sneddon (2): > x86/bugs: Check VERW mitigations for consistency > x86/bugs: Clean-up verw mitigations > > arch/x86/include/asm/processor.h | 2 +- > arch/x86/kernel/cpu/bugs.c | 206 +++++++++++++------------------ > 2 files changed, 90 insertions(+), 118 deletions(-) >
