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| author | Dan Williams <dan.j.williams@intel.com> | 2018-02-01 04:47:03 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-02-01 12:59:10 +0300 |
| commit | 085331dfc6bbe3501fb936e657331ca943827600 (patch) | |
| tree | 0d232c6ca05ee32350962d32d351520394dae0c9 /include/linux/init.h | |
| parent | 12c69f1e94c89d40696e83804dd2f0965b5250cd (diff) | |
| download | linux-085331dfc6bbe3501fb936e657331ca943827600.tar.xz | |
x86/kvm: Update spectre-v1 mitigation
Commit 75f139aaf896 "KVM: x86: Add memory barrier on vmcs field lookup"
added a raw 'asm("lfence");' to prevent a bounds check bypass of
'vmcs_field_to_offset_table'.
The lfence can be avoided in this path by using the array_index_nospec()
helper designed for these types of fixes.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Andrew Honig <ahonig@google.com>
Cc: kvm@vger.kernel.org
Cc: Jim Mattson <jmattson@google.com>
Link: https://lkml.kernel.org/r/151744959670.6342.3001723920950249067.stgit@dwillia2-desk3.amr.corp.intel.com
Diffstat (limited to 'include/linux/init.h')
0 files changed, 0 insertions, 0 deletions