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| author | Haozhong Zhang | 2015-10-20 09:39:01 +0200 |
|---|---|---|
| committer | Paolo Bonzini | 2015-11-10 12:06:14 +0100 |
| commit | bc9b961b357ea8129d75613b7af4fdf57ced9b9f (patch) | |
| tree | 48a66aa2209463b4c59bb47510400780ca83902c /arch/x86/kvm/svm.c | |
| parent | KVM: x86: declare a few variables as __read_mostly (diff) | |
| download | kernel-qcow2-linux-bc9b961b357ea8129d75613b7af4fdf57ced9b9f.tar.gz kernel-qcow2-linux-bc9b961b357ea8129d75613b7af4fdf57ced9b9f.tar.xz kernel-qcow2-linux-bc9b961b357ea8129d75613b7af4fdf57ced9b9f.zip | |
KVM: x86: Collect information for setting TSC scaling ratio
The number of bits of the fractional part of the 64-bit TSC scaling
ratio in VMX and SVM is different. This patch makes the architecture
code to collect the number of fractional bits and other related
information into variables that can be accessed in the common code.
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index f2c8e4917688..74712ead9787 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -908,6 +908,9 @@ static __init int svm_hardware_setup(void) max = min(0x7fffffffULL, __scale_tsc(tsc_khz, TSC_RATIO_MAX)); kvm_max_guest_tsc_khz = max; + + kvm_max_tsc_scaling_ratio = TSC_RATIO_MAX; + kvm_tsc_scaling_ratio_frac_bits = 32; } if (nested) { |