x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features

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Both AMD and Intel can have SPEC_CTRL_MSR for SSBD.

However AMD also has two more other ways of doing it - which
are !SPEC_CTRL MSR ways.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: kvm@vger.kernel.org
Cc: KarimAllah Ahmed <karahmed@amazon.de>
Cc: andrew.cooper3@citrix.com
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lkml.kernel.org/r/20180601145921.9500-4-konrad.wilk@oracle.com

...

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Konrad Rzeszutek Wilk 2018-06-01 10:59:21 -04:00 • committed by Thomas Gleixner

parent 6ac2f49edb

commit 108fab4b5c

1 changed files with 3 additions and 8 deletions

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arch/x86/kernel/cpu/bugs.c

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