diff options
| author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2025-11-13 15:37:39 -0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-11-18 16:22:40 -0800 |
| commit | aba7de6088be5a3b5d766c5f7fdb5d0790ff8f13 (patch) | |
| tree | 3678b5d0a5ab27d9a52f37920225c7a3d5bf8eab /arch/x86/lib/usercopy.c | |
| parent | 844afc1af3a9d98dc8c246855c3aac410be36bef (diff) | |
x86/bugs: Use VM_CLEAR_CPU_BUFFERS in VMX as well
TSA mitigation:
d8010d4ba43e ("x86/bugs: Add a Transient Scheduler Attacks mitigation")
introduced VM_CLEAR_CPU_BUFFERS for guests on AMD CPUs. Currently on Intel
CLEAR_CPU_BUFFERS is being used for guests which has a much broader scope
(kernel->user also).
Make mitigations on Intel consistent with TSA. This would help handling the
guest-only mitigations better in future.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
[sean: make CLEAR_CPU_BUF_VM mutually exclusive with the MMIO mitigation]
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Brendan Jackman <jackmanb@google.com>
Link: https://patch.msgid.link/20251113233746.1703361-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/lib/usercopy.c')
0 files changed, 0 insertions, 0 deletions