| commit | e02b50ca442e88122e1302d4dbc1b71a4808c13f | [log] [tgz] |
|---|---|---|
| author | KP Singh <kpsingh@kernel.org> | Mon Feb 27 07:05:41 2023 +0100 |
| committer | Borislav Petkov (AMD) <bp@alien8.de> | Mon Feb 27 19:02:47 2023 +0100 |
| tree | 1b76a2583ed67d4d87e6fcccdc3104f428fa971f | |
| parent | 6921ed9049bc7457f66c1596c5b78aec0dae4a9d [diff] |
Documentation/hw-vuln: Document the interaction between IBRS and STIBP
Explain why STIBP is needed with legacy IBRS as currently implemented
(KERNEL_IBRS) and why STIBP is not needed when enhanced IBRS is enabled.
Fixes: 7c693f54c873 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS")
Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230227060541.1939092-2-kpsingh@kernel.org