From 67896ef13c4db88082a914e96d958044cd3392e8 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Fri, 6 May 2022 15:54:02 -0700 Subject: platform/x86/intel/ifs: Add stub driver for In-Field Scan Cloud Service Providers that operate fleets of servers have reported [1] occasions where they can detect that a CPU has gone bad due to effects like electromigration, or isolated manufacturing defects. However, that detection method is A/B testing seemingly random application failures looking for a pattern. In-Field Scan (IFS) is a driver for a platform capability to load a crafted 'scan image' to run targeted low level diagnostics outside of the CPU's architectural error detection capabilities. Stub version of driver just does initial part of check for the IFS feature. MSR_IA32_CORE_CAPS must enumerate the presence of the MSR_INTEGRITY_CAPS MSR. [1]: https://www.youtube.com/watch?v=QMF3rqhjYuM Reviewed-by: Dan Williams Signed-off-by: Tony Luck Acked-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220506225410.1652287-5-tony.luck@intel.com Signed-off-by: Hans de Goede --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index fd768d43e048..3ffc7c129b87 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9859,6 +9859,13 @@ B: https://bugzilla.kernel.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git F: drivers/idle/intel_idle.c +INTEL IN FIELD SCAN (IFS) DEVICE +M: Jithu Joseph +R: Ashok Raj +R: Tony Luck +S: Maintained +F: drivers/platform/x86/intel/ifs + INTEL INTEGRATED SENSOR HUB DRIVER M: Srinivas Pandruvada M: Jiri Kosina -- cgit v1.2.3