Tony Luck d56593eb5e x86/intel_rdt: Turn off most RDT features on Skylake ...

Errata list is included in this document:
https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/6th-gen-x-series-spec-update.pdf
with more details in:
https://www.intel.com/content/www/us/en/processors/xeon/scalable/xeon-scalable-spec-update.html

But the tl;dr summary (using tags from first of the documents) is:
SKZ4  MBM does not accurately track write bandwidth
SKZ17 CMT counters may not count accurately
SKZ18 CAT may not restrict cacheline allocation under certain conditions
SKZ19 MBM counters may undercount

Disable all these features on Skylake models. Users who understand the
errata may re-enable using boot command line options.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Fenghua" <fenghua.yu@intel.com>
Cc: Ravi V" <ravi.v.shankar@intel.com>
Cc: "Peter Zijlstra" <peterz@infradead.org>
Cc: "Stephane Eranian" <eranian@google.com>
Cc: "Andi Kleen" <ak@linux.intel.com>
Cc: "David Carrillo-Cisneros" <davidcc@google.com>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/3aea0a3bae219062c812668bd9b7b8f1a25003ba.1503512900.git.tony.luck@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2017-08-25 22:00:45 +02:00

..

alpha

tty: Fix TIOCGPTPEER ioctl definition

2017-07-17 17:04:41 +02:00

arc

dma-coherent: introduce interface for default DMA pool

2017-07-20 16:09:10 +02:00

arm

arm64 fixes:

2017-07-28 13:29:36 -07:00

arm64

arm64 fixes:

2017-07-28 13:29:36 -07:00

blackfin

Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-07-21 10:41:19 -07:00

c6x

Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-15 11:17:52 -07:00

cris

Kbuild updates for v4.13 (2nd)

2017-07-13 13:37:57 -07:00

frv

FRV: tlbflush: move asmlinkage before return type

2017-07-12 16:26:04 -07:00

h8300

h8300: Add missing closing parenthesis in flat_get_addr_from_rp()

2017-07-16 09:24:06 -07:00

hexagon

hexagon: move generic-y of exported headers to uapi/asm/Kbuild

2017-07-10 03:43:26 +09:00

ia64

Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-15 11:17:52 -07:00

m32r

Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-15 11:17:52 -07:00

m68k

blackfin, m68k: Fix flat_set_persistent() for unsigned long to u32 changes

2017-07-16 09:24:06 -07:00

metag

metag: move generic-y of exported headers to uapi/asm/Kbuild

2017-07-10 03:43:30 +09:00

microblaze

Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-15 11:17:52 -07:00

mips

dma mapping fixes for 4.13-rc2:

2017-07-25 17:17:18 -07:00

mn10300

Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-07-21 10:41:19 -07:00

nios2

nios2: move generic-y of exported headers to uapi/asm/Kbuild

2017-07-11 21:33:43 +09:00

openrisc

openrisc: move generic-y of exported headers to uapi/asm/Kbuild

2017-07-11 21:33:50 +09:00

parisc

parisc: Extend disabled preemption in copy_user_page

2017-07-25 23:36:54 +02:00

powerpc

s390: SRCU fix.

2017-07-28 13:36:56 -07:00

s390

s390: SRCU fix.

2017-07-28 13:36:56 -07:00

score

Merge branch 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-06 22:07:44 -07:00

sh

TTY/Serial fixes for 4.13-rc2

2017-07-22 09:00:24 -07:00

sparc

TTY/Serial fixes for 4.13-rc2

2017-07-22 09:00:24 -07:00

tile

Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-15 11:17:52 -07:00

um

Merge branch 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

2017-07-15 10:49:33 -07:00

unicore32

unicore32: move generic-y of exported headers to uapi/asm/Kbuild

2017-07-11 21:33:52 +09:00

x86

x86/intel_rdt: Turn off most RDT features on Skylake

2017-08-25 22:00:45 +02:00

xtensa

tty: Fix TIOCGPTPEER ioctl definition

2017-07-17 17:04:41 +02:00

.gitignore

…

Kconfig

include/linux/string.h: add the option of fortified string.h functions

2017-07-12 16:26:03 -07:00