| commit | 297aa26849436ef07ada4830800f67a4511fb6f7 | |
| author | Jan Kiszka <jan.kiszka@siemens.com> | |
| Mon, 1 Nov 2010 13:01:29 +0000 (1 14:01 +0100) | ||
| committer | Marcelo Tosatti <mtosatti@redhat.com> | |
| Mon, 1 Nov 2010 17:57:05 +0000 (1 15:57 -0200) | ||
| tree | 8da1e15b526891ce66369c94b12e87d05aa64129 | treesnapshot (tar.gz zip) |
| parent | 042d60f3e9e2af5b0819fbe3d237f75cf63e4e42 | commitdiff |
KVM: x86: Avoid issuing wbinvd twice
Micro optimization to avoid calling wbinvd twice on the CPU that has to
emulate it. As we might be preempted between smp_call_function_many and
the local wbinvd, the cache might be filled again so that real work
could be done uselessly.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Micro optimization to avoid calling wbinvd twice on the CPU that has to
emulate it. As we might be preempted between smp_call_function_many and
the local wbinvd, the cache might be filled again so that real work
could be done uselessly.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| arch/x86/kvm/x86.c | diffblobblamehistory |