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[Qemu-commits] [qemu/qemu] 1ee915: Revert "target-i386: Disable HLE and


From: GitHub
Subject: [Qemu-commits] [qemu/qemu] 1ee915: Revert "target-i386: Disable HLE and RTM on Haswel...
Date: Fri, 20 Mar 2015 06:30:07 -0700

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: 1ee9159882f6687d6bc1f2207e97ada1eeccaa7c
      
https://github.com/qemu/qemu/commit/1ee9159882f6687d6bc1f2207e97ada1eeccaa7c
  Author: Eduardo Habkost <address@hidden>
  Date:   2015-03-19 (Thu, 19 Mar 2015)

  Changed paths:
    M hw/i386/pc_piix.c
    M hw/i386/pc_q35.c
    M target-i386/cpu.c

  Log Message:
  -----------
  Revert "target-i386: Disable HLE and RTM on Haswell & Broadwell"

This reverts commit 13704e4c455770d500d6b87b117e32f0d01252c9.

With the Intel microcode update that removed HLE and RTM, there will be
different kinds of Haswell and Broadwell CPUs out there: some that still
have the HLE and RTM features, and some that don't have the HLE and RTM
features. On both cases people may be willing to use the pc-*-2.3
machine-types.

So instead of making the CPU model results confusing by making it depend
on the machine-type, keep HLE and RTM on the existing Haswell and
Broadwell CPU models. The plan is to introduce "Haswell-noTSX" and
"Broadwell-noTSX" CPU models later, for people who have CPUs that don't
have TSX feature available.

Reviewed-by: Daniel P. Berrange <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>


  Commit: a356850b80b3d13b2ef737dad2acb05e6da03753
      
https://github.com/qemu/qemu/commit/a356850b80b3d13b2ef737dad2acb05e6da03753
  Author: Eduardo Habkost <address@hidden>
  Date:   2015-03-19 (Thu, 19 Mar 2015)

  Changed paths:
    M target-i386/cpu.c

  Log Message:
  -----------
  target-i386: Haswell-noTSX and Broadwell-noTSX

With the Intel microcode update that removed HLE and RTM, there will be
different kinds of Haswell and Broadwell CPUs out there: some that still
have the HLE and RTM features, and some that don't have the HLE and RTM
features. On both cases people may be willing to use the pc-*-2.3
machine-types.

So, to cover both cases, introduce Haswell-noTSX and Broadwell-noTSX CPU
models, for hosts that have Haswell and Broadwell CPUs without TSX support.

Reviewed-by: Daniel P. Berrange <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>


  Commit: 3c6c9fe034c0c07b77f272e4a53d7735220a16a4
      
https://github.com/qemu/qemu/commit/3c6c9fe034c0c07b77f272e4a53d7735220a16a4
  Author: Peter Maydell <address@hidden>
  Date:   2015-03-20 (Fri, 20 Mar 2015)

  Changed paths:
    M hw/i386/pc_piix.c
    M hw/i386/pc_q35.c
    M target-i386/cpu.c

  Log Message:
  -----------
  Merge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into 
staging

X86 queue 2015-03-19

# gpg: Signature made Thu Mar 19 19:40:17 2015 GMT using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <address@hidden>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-pull-request:
  target-i386: Haswell-noTSX and Broadwell-noTSX
  Revert "target-i386: Disable HLE and RTM on Haswell & Broadwell"

Signed-off-by: Peter Maydell <address@hidden>


Compare: https://github.com/qemu/qemu/compare/4eef86486d40...3c6c9fe034c0

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