[Qemu-commits] [qemu/qemu] 28b8e4: i386: Introduce ARAT CPU feature

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: 28b8e4d0bf93ba176b4b7be819d537383c5a9060
      
https://github.com/qemu/qemu/commit/28b8e4d0bf93ba176b4b7be819d537383c5a9060
  Author: Jan Kiszka <address@hidden>
  Date:   2015-07-07 (Tue, 07 Jul 2015)

  Changed paths:
    M include/hw/i386/pc.h
    M target-i386/cpu.c
    M target-i386/cpu.h
    M target-i386/kvm.c

  Log Message:
  -----------
  i386: Introduce ARAT CPU feature

ARAT signals that the APIC timer does not stop in power saving states.
As our APICs are emulated, it's fine to expose this feature to guests,
at least when asking for KVM host features or with CPU types that
include the flag. The exact model number that introduced the feature is
not known, but reports can be found that it's at least available since
Sandy Bridge.

Signed-off-by: Jan Kiszka <address@hidden>
Acked-by: Paolo Bonzini <address@hidden>
Acked-by: Michael S. Tsirkin <address@hidden>
Reviewed-by: Eduardo Habkost <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>


  Commit: 06ef227e5158cca6710e6c268d6a7f65a5e2811b
      
https://github.com/qemu/qemu/commit/06ef227e5158cca6710e6c268d6a7f65a5e2811b
  Author: Paolo Bonzini <address@hidden>
  Date:   2015-07-07 (Tue, 07 Jul 2015)

  Changed paths:
    M target-i386/cpu.h

  Log Message:
  -----------
  target-i386: avoid overflow in the tsc-frequency property

The TSC frequency fits comfortably in an int when expressed in kHz,
but it may overflow when converted to Hz.  In this case,
tsc-frequency returns a negative value because x86_cpuid_get_tsc_freq
does a 32-bit multiplication before assigning to int64_t.

For simplicity just make tsc_khz a 64-bit value.

Spotted by Coverity.

Signed-off-by: Paolo Bonzini <address@hidden>
Reviewed-by: Eduardo Habkost <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>


  Commit: 1a632032d1ea09a09dc424ac2b10a4a11cd52ab9
      
https://github.com/qemu/qemu/commit/1a632032d1ea09a09dc424ac2b10a4a11cd52ab9
  Author: Peter Maydell <address@hidden>
  Date:   2015-07-07 (Tue, 07 Jul 2015)

  Changed paths:
    M include/hw/i386/pc.h
    M target-i386/cpu.c
    M target-i386/cpu.h
    M target-i386/kvm.c

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

X86 queue, 2015-07-07

Patch "target-i386: emulate CPUID level of real hardware" was removed after the
2015-07-03 pull request.

# gpg: Signature made Tue Jul  7 15:46:23 2015 BST 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: avoid overflow in the tsc-frequency property
  i386: Introduce ARAT CPU feature

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


Compare: https://github.com/qemu/qemu/compare/30c6672aa4b4...1a632032d1ea