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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-28 14:00:18 +0200 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2015-10-02 16:22:01 -0300 |
| commit | becb66673ec30cb604926d247ab9449a60ad8b11 (patch) | |
| tree | e13e92e63cc45c342fa97144ddf34ec8e88745ee /hw/intc/apic_common.c | |
| parent | c9b8f6b6210847b4381c5b2ee172b1c7eb9985d6 (diff) | |
| download | focaccia-qemu-becb66673ec30cb604926d247ab9449a60ad8b11.tar.gz focaccia-qemu-becb66673ec30cb604926d247ab9449a60ad8b11.zip | |
target-i386: add ABM to Haswell* and Broadwell* CPU models
ABM is only implemented as a single instruction set by AMD; all AMD processors support both instructions or neither. Intel considers POPCNT as part of SSE4.2, and LZCNT as part of BMI1, but Intel also uses AMD's ABM flag to indicate support for both POPCNT and LZCNT. It has to be added to Haswell and Broadwell because Haswell, by adding LZCNT, has completed the ABM. Tested with "qemu-kvm -cpu Haswell-noTSX,enforce" (and also with older machine types) on an Haswell-EP machine. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'hw/intc/apic_common.c')
0 files changed, 0 insertions, 0 deletions