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a3c12cf3 |
| 01-Sep-2023 |
Takahiro Itazuri <itazur@amazon.com> |
docs/hw-vuln: Update desc of best effort mode
Moves the description of the best effort mitigation mode to the table of the possible values in the mds and tsx_async_abort docs, and adds the same one
docs/hw-vuln: Update desc of best effort mode
Moves the description of the best effort mitigation mode to the table of the possible values in the mds and tsx_async_abort docs, and adds the same one to the mmio_stale_data doc.
Signed-off-by: Takahiro Itazuri <itazur@amazon.com> Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230901082959.28310-1-itazur@amazon.com
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7df54884 |
| 03-Aug-2022 |
Pawan Gupta <pawan.kumar.gupta@linux.intel.com> |
x86/bugs: Add "unknown" reporting for MMIO Stale Data
Older Intel CPUs that are not in the affected processor list for MMIO Stale Data vulnerabilities currently report "Not affected" in sysfs, which
x86/bugs: Add "unknown" reporting for MMIO Stale Data
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: 8d50cdf8b834 ("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
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44194701 |
| 20-May-2022 |
Pawan Gupta <pawan.kumar.gupta@linux.intel.com> |
Documentation: Add documentation for Processor MMIO Stale Data
Add the admin guide for Processor MMIO stale data vulnerabilities.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Sign
Documentation: Add documentation for Processor MMIO Stale Data
Add the admin guide for Processor MMIO stale data vulnerabilities.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de>
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