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| author | Dan Williams <[email protected]> | 2018-02-01 01:47:03 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2018-02-01 09:59:10 +0000 |
| commit | 085331dfc6bbe3501fb936e657331ca943827600 (patch) | |
| tree | 0d232c6ca05ee32350962d32d351520394dae0c9 /scripts/gcc-plugins/randomize_layout_plugin.c | |
| parent | x86/paravirt: Remove 'noreplace-paravirt' cmdline option (diff) | |
| download | kernel-085331dfc6bbe3501fb936e657331ca943827600.tar.gz kernel-085331dfc6bbe3501fb936e657331ca943827600.zip | |
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 <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Paolo Bonzini <[email protected]>
Cc: Andrew Honig <[email protected]>
Cc: [email protected]
Cc: Jim Mattson <[email protected]>
Link: https://lkml.kernel.org/r/151744959670.6342.3001723920950249067.stgit@dwillia2-desk3.amr.corp.intel.com
Diffstat (limited to 'scripts/gcc-plugins/randomize_layout_plugin.c')
0 files changed, 0 insertions, 0 deletions