tree 35312a4baa8932ed0522725c5d7a980fcc60b64f
parent 54b98bff8ef4ccfc6f638c5ed868d2d51cdde585
author Chris J Arges <chris.j.arges@canonical.com> 1415847639 -0600
committer Paolo Bonzini <pbonzini@redhat.com> 1415876171 +0100

kvm: svm: move WARN_ON in svm_adjust_tsc_offset

When running the tsc_adjust kvm-unit-test on an AMD processor with the
IA32_TSC_ADJUST feature enabled, the WARN_ON in svm_adjust_tsc_offset can be
triggered. This WARN_ON checks for a negative adjustment in case __scale_tsc
is called; however it may trigger unnecessary warnings.

This patch moves the WARN_ON to trigger only if __scale_tsc will actually be
called from svm_adjust_tsc_offset. In addition make adj in kvm_set_msr_common
s64 since this can have signed values.

Signed-off-by: Chris J Arges <chris.j.arges@canonical.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>