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: 7c693f54 ("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
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