Xiaochen Shen 536a0d8e79 x86/resctrl: Check monitoring static key in the MBM overflow handler ... Currently, there are three static keys in the resctrl file system: rdt_mon_enable_key and rdt_alloc_enable_key indicate if the monitoring feature and the allocation feature are enabled, respectively. The rdt_enable_key is enabled when either the monitoring feature or the allocation feature is enabled. If no monitoring feature is present (either hardware doesn't support a monitoring feature or the feature is disabled by the kernel command line option "rdt="), rdt_enable_key is still enabled but rdt_mon_enable_key is disabled. MBM is a monitoring feature. The MBM overflow handler intends to check if the monitoring feature is not enabled for fast return. So check the rdt_mon_enable_key in it instead of the rdt_enable_key as former is the more accurate check. [ bp: Massage commit message. ] Fixes: e33026831b ("x86/intel_rdt/mbm: Handle counter overflow") Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/1576094705-13660-1-git-send-email-xiaochen.shen@intel.com		2020-01-17 19:32:32 +01:00
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core.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
ctrlmondata.c	x86/resctrl: Prevent NULL pointer dereference when reading mondata	2019-11-03 17:51:22 +01:00
internal.h	x86/resctrl: Check monitoring static key in the MBM overflow handler	2020-01-17 19:32:32 +01:00
Makefile	x86/resctrl: Avoid confusion over the new X86_RESCTRL config	2019-02-02 10:34:52 +01:00
monitor.c	x86/resctrl: Check monitoring static key in the MBM overflow handler	2020-01-17 19:32:32 +01:00
pseudo_lock_event.h	x86/resctrl: Rename and move rdt files to a separate directory	2018-11-22 20:16:18 +01:00
pseudo_lock.c	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-08 17:25:53 -07:00
rdtgroup.c	x86/resctrl: Do not reconfigure exiting tasks	2020-01-13 14:10:21 +01:00