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authorAvi Kivity <avi@redhat.com>2012-08-27 23:46:17 +0300
committerMarcelo Tosatti <mtosatti@redhat.com>2012-08-27 18:38:55 -0300
commitdd856efafe6097a5c9104725c2bca74430423db8 (patch)
treed074a16680f3a39798f372e16426476aa7f6e1df /arch/x86/Makefile_32.cpu
parent66a03505a7fcc70187319ef2318832f4d3c451a6 (diff)
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KVM: x86 emulator: access GPRs on demand
Instead of populating the entire register file, read in registers as they are accessed, and write back only the modified ones. This saves a VMREAD and VMWRITE on Intel (for rsp, since it is not usually used during emulation), and a two 128-byte copies for the registers. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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