linux/arch/x86/kernel/cpu
Vlastimil Babka 6a012288d6 x86/speculation/l1tf: Suggest what to do on systems with too much RAM
Two users have reported [1] that they have an "extremely unlikely" system
with more than MAX_PA/2 memory and L1TF mitigation is not effective.

Make the warning more helpful by suggesting the proper mem=X kernel boot
parameter to make it effective and a link to the L1TF document to help
decide if the mitigation is worth the unusable RAM.

[1] https://bugzilla.suse.com/show_bug.cgi?id=1105536

Suggested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/966571f0-9d7f-43dc-92c6-a10eec7a1254@suse.cz
2018-08-24 15:55:17 +02:00
..
mcheck Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-08-13 11:19:25 -07:00
microcode x86/microcode: Allow late microcode loading with SMT disabled 2018-08-10 08:32:15 +01:00
mtrr x86/mtrr: Don't copy out-of-bounds data in mtrr_write 2018-07-07 18:58:41 +02:00
.gitignore
amd.c Merge branch 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-08-14 09:46:06 -07:00
aperfmperf.c
bugs.c x86/speculation/l1tf: Suggest what to do on systems with too much RAM 2018-08-24 15:55:17 +02:00
cacheinfo.c x86/CPU/AMD: Fix LLC ID bit-shift calculation 2018-06-22 21:21:49 +02:00
centaur.c x86/CPU: Move x86_cpuinfo::x86_max_cores assignment to detect_num_cpu_cores() 2018-05-13 16:14:24 +02:00
common.c xen: features and fixes for 4.19-rc1 2018-08-14 16:54:22 -07:00
cpu.h xen: features and fixes for 4.19-rc1 2018-08-14 16:54:22 -07:00
cpuid-deps.c x86/cpuid: Switch to 'static const' specifier 2018-03-08 12:23:42 +01:00
cyrix.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-15 01:15:52 +01:00
hypervisor.c x86/jailhouse: Add infrastructure for running in non-root cell 2018-01-14 21:11:54 +01:00
intel_pconfig.c x86/pconfig: Detect PCONFIG targets 2018-03-12 12:10:54 +01:00
intel_rdt_ctrlmondata.c x86/intel_rdt: Resctrl files reflect pseudo-locked information 2018-06-23 13:03:50 +02:00
intel_rdt_monitor.c x86/intel_rdt/mba_sc: Feedback loop to dynamically update mem bandwidth 2018-05-19 13:16:44 +02:00
intel_rdt_pseudo_lock_event.h x86/intel_rdt: Support L3 cache performance event of Broadwell 2018-06-24 15:35:48 +02:00
intel_rdt_pseudo_lock.c x86/intel_rdt: Disable PMU access 2018-08-03 13:06:35 +02:00
intel_rdt_rdtgroup.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
intel_rdt.c x86/intel_rdt: Ensure RDT cleanup on exit 2018-06-23 13:03:50 +02:00
intel_rdt.h x86/intel_rdt: Support restoration of subset of permissions 2018-07-03 08:38:40 +02:00
intel.c Merge branch 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-08-14 09:46:06 -07:00
Makefile x86/intel_rdt: Create debugfs files for pseudo-locking testing 2018-06-23 13:03:51 +02:00
match.c
mkcapflags.sh
mshyperv.c ARM: 2018-04-09 11:42:31 -07:00
perfctr-watchdog.c
powerflags.c
proc.c x86/cpu: Change type of x86_cache_size variable to unsigned int 2018-02-15 01:15:53 +01:00
rdrand.c
scattered.c Merge branch 'x86/hyperv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-01 15:04:17 +01:00
topology.c x86/cpu/topology: Provide detect_extended_topology_early() 2018-06-21 14:20:59 +02:00
transmeta.c
umc.c
vmware.c