Pawan Gupta 0616411a70 x86/bugs: Add "unknown" reporting for MMIO Stale Data ... commit 7df548840c upstream. Older Intel CPUs that are not in the affected processor list for MMIO Stale Data vulnerabilities currently report "Not affected" in sysfs, which may not be correct. Vulnerability status for these older CPUs is unknown. Add known-not-affected CPUs to the whitelist. Report "unknown" mitigation status for CPUs that are not in blacklist, whitelist and also don't enumerate MSR ARCH_CAPABILITIES bits that reflect hardware immunity to MMIO Stale Data vulnerabilities. Mitigation is not deployed when the status is unknown. [ bp: Massage, fixup. ] Fixes: 8d50cdf8b8 ("x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data") Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com> Suggested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/a932c154772f2121794a5f2eded1a11013114711.1657846269.git.pawan.kumar.gupta@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-09-05 10:23:56 +02:00
..
index.rst	Documentation: Add documentation for Processor MMIO Stale Data	2022-06-16 13:00:51 +02:00
l1tf.rst	…
mds.rst	x86/speculation: Fix incorrect MDS/TAA mitigation status	2019-11-28 18:29:03 +01:00
multihit.rst	Documentation: Add ITLB_MULTIHIT documentation	2019-11-16 10:29:57 +01:00
processor_mmio_stale_data.rst	x86/bugs: Add "unknown" reporting for MMIO Stale Data	2022-09-05 10:23:56 +02:00
special-register-buffer-data-sampling.rst	x86/speculation: Add Ivy Bridge to affected list	2020-06-11 09:22:23 +02:00
spectre.rst	x86/speculation: Update link to AMD speculation whitepaper	2022-03-11 10:03:31 +01:00
tsx_async_abort.rst	x86/speculation: Fix incorrect MDS/TAA mitigation status	2019-11-28 18:29:03 +01:00