qemu-e2k/docs
Kashyap Chamarthy 3b2c52c017 qemu-cpu-models.rst: Document -noTSX, mds-no, taa-no, and tsx-ctrl
- Add the '-noTSX' variants for CascadeLake and SkyLake.

- Document the three MSR bits: 'mds-no', 'taa-no', and 'tsx-ctrl'

  Two confusing things about 'mds-no' (and the first point applies to
  the other two MSRs too):

  (1) The 'mds-no' bit will _not_ show up in the guest's /proc/cpuinfo.
      Rather it is used to fill in the guest's sysfs:

        /sys/devices/system/cpu/vulnerabilities/mds:Not affected

      Paolo confirmed on IRC as such.

  (2) There are _three_ variants[+] of CascadeLake CPUs, with different
      stepping levels: 5, 6, and 7.  To quote wikichip.org[*]:

        "note that while steppings 6 & 7 are fully mitigated, earlier
        stepping 5 is not protected against MSBDS, MLPDS, nor MDSUM"

      The above is also indicated in the Intel's document[+], as
      indicated by "No" under the three columns of MFBDS, MSBDS, and
      MLPDS.

  I've expressed this in the docs without belabouring the details.

      [+] https://software.intel.com/security-software-guidance/insights/processors-affected-microarchitectural-data-sampling
      [*] https://en.wikichip.org/wiki/intel/microarchitectures/cascade_lake#Key_changes_from_Skylake

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20200225165618.6571-3-kchamart@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-16 23:02:25 +01:00
..
config
devel docs: Be consistent about capitalization of 'Arm' 2020-03-12 11:20:20 +00:00
interop misc: Replace zero-length arrays with flexible array member (manual) 2020-03-16 22:07:42 +01:00
specs docs: Be consistent about capitalization of 'Arm' 2020-03-12 11:20:20 +00:00
sphinx docs/sphinx/hxtool.py: Remove STEXI/ETEXI support 2020-03-12 11:14:06 +00:00
spin
system qemu-cpu-models.rst: Document -noTSX, mds-no, taa-no, and tsx-ctrl 2020-03-16 23:02:25 +01:00
tools docs: Move tools documentation to tools manual 2020-02-25 10:48:06 +00:00
user docs: Be consistent about capitalization of 'Arm' 2020-03-12 11:20:20 +00:00
amd-memory-encryption.txt
barrier.txt
block-replication.txt colo: Update Documentation for continuous replication 2020-03-03 18:04:47 +08:00
bootindex.txt
can.txt docs: Be consistent about capitalization of 'Arm' 2020-03-12 11:20:20 +00:00
ccid.txt
COLO-FT.txt colo: Update Documentation for continuous replication 2020-03-03 18:04:47 +08:00
colo-proxy.txt
conf.py docs: Create defs.rst.inc as a place to define substitutions 2020-03-06 10:04:58 +00:00
cpu-hotplug.rst
defs.rst.inc docs/system: convert Texinfo documentation to rST 2020-03-06 10:05:12 +00:00
generic-loader.txt
hyperv.txt
igd-assign.txt
image-fuzzer.txt
index.html.in docs/index.rst, docs/index.html.in: Reorder manuals 2020-03-12 11:14:06 +00:00
index.rst docs/index.rst, docs/index.html.in: Reorder manuals 2020-03-12 11:14:06 +00:00
memory-hotplug.txt
microvm.rst docs/microvm.rst: add instructions for shutting down the guest 2019-11-19 10:01:34 +01:00
multi-thread-compression.txt
multiseat.txt
nvdimm.txt
pci_expander_bridge.txt
pcie_pci_bridge.txt
pcie.txt
pr-manager.rst
pvrdma.txt
qcow2-cache.txt
qdev-device-use.txt
qemu_logo.pdf
qemu-option-trace.rst.inc docs/qemu-option-trace.rst.inc: Remove redundant comment 2020-03-12 11:14:06 +00:00
qemupciserial.inf
rdma.txt
replay.txt docs: Be consistent about capitalization of 'Arm' 2020-03-12 11:20:20 +00:00
spice-port-fqdn.txt
throttle.txt
usb2.txt
usb-storage.txt
virtio-balloon-stats.txt
virtio-net-failover.rst docs: fix rst syntax errors in unbuilt docs 2019-12-19 16:20:21 +00:00
virtio-pmem.rst docs: fix rst syntax errors in unbuilt docs 2019-12-19 16:20:21 +00:00
xbzrle.txt
xen-save-devices-state.txt