KVM: x86: update masterclock values on TSC writes
authorMarcelo Tosatti <mtosatti@redhat.com>
Tue, 4 Nov 2014 23:30:44 +0000 (21:30 -0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Sat, 8 Nov 2014 07:20:53 +0000 (08:20 +0100)
commit7f187922ddf6b67f2999a76dcb71663097b75497
tree618f63240bed03d67a099ba0bc3be77b6c932466
parentb2c9d43e6c0f821bde0c1c840038d159d18f1519
KVM: x86: update masterclock values on TSC writes

When the guest writes to the TSC, the masterclock TSC copy must be
updated as well along with the TSC_OFFSET update, otherwise a negative
tsc_timestamp is calculated at kvm_guest_time_update.

Once "if (!vcpus_matched && ka->use_master_clock)" is simplified to
"if (ka->use_master_clock)", the corresponding "if (!ka->use_master_clock)"
becomes redundant, so remove the do_request boolean and collapse
everything into a single condition.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/x86.c