x86/bhi: Enumerate Branch History Injection (BHI) bug

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commit be482ff950 upstream.

Mitigation for BHI is selected based on the bug enumeration. Add bits
needed to enumerate BHI bug.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Pawan Gupta 2024-03-11 08:57:03 -07:00 • committed by Greg Kroah-Hartman

parent 29c50bb6fb

commit 42196bdec0

3 changed files with 21 additions and 8 deletions

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1

arch/x86/include/asm/cpufeatures.h

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4

arch/x86/include/asm/msr-index.h

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24

arch/x86/kernel/cpu/common.c

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