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| author | Rob Landley <rlandley@parallels.com> | 2011-05-06 09:22:02 -0700 |
|---|---|---|
| committer | Randy Dunlap <randy.dunlap@oracle.com> | 2011-05-06 09:22:02 -0700 |
| commit | ed16648eb5b86917f0b90bdcdbc857202da72f90 (patch) | |
| tree | a8198415a6c2f1909f02340b05d36e1d53b82320 /Documentation/kvm/cpuid.txt | |
| parent | bfd412db9e7b0d8f7b9c09d12d07aa2ac785f1d0 (diff) | |
| download | linux-ed16648eb5b86917f0b90bdcdbc857202da72f90.tar.bz2 | |
Move kvm, uml, and lguest subdirectories under a common "virtual" directory, I.E:
cd Documentation
mkdir virtual
git mv kvm uml lguest virtual
Signed-off-by: Rob Landley <rlandley@parallels.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Diffstat (limited to 'Documentation/kvm/cpuid.txt')
| -rw-r--r-- | Documentation/kvm/cpuid.txt | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/Documentation/kvm/cpuid.txt b/Documentation/kvm/cpuid.txt deleted file mode 100644 index 882068538c9c..000000000000 --- a/Documentation/kvm/cpuid.txt +++ /dev/null @@ -1,45 +0,0 @@ -KVM CPUID bits -Glauber Costa <glommer@redhat.com>, Red Hat Inc, 2010 -===================================================== - -A guest running on a kvm host, can check some of its features using -cpuid. This is not always guaranteed to work, since userspace can -mask-out some, or even all KVM-related cpuid features before launching -a guest. - -KVM cpuid functions are: - -function: KVM_CPUID_SIGNATURE (0x40000000) -returns : eax = 0, - ebx = 0x4b4d564b, - ecx = 0x564b4d56, - edx = 0x4d. -Note that this value in ebx, ecx and edx corresponds to the string "KVMKVMKVM". -This function queries the presence of KVM cpuid leafs. - - -function: define KVM_CPUID_FEATURES (0x40000001) -returns : ebx, ecx, edx = 0 - eax = and OR'ed group of (1 << flag), where each flags is: - - -flag || value || meaning -============================================================================= -KVM_FEATURE_CLOCKSOURCE || 0 || kvmclock available at msrs - || || 0x11 and 0x12. ------------------------------------------------------------------------------- -KVM_FEATURE_NOP_IO_DELAY || 1 || not necessary to perform delays - || || on PIO operations. ------------------------------------------------------------------------------- -KVM_FEATURE_MMU_OP || 2 || deprecated. ------------------------------------------------------------------------------- -KVM_FEATURE_CLOCKSOURCE2 || 3 || kvmclock available at msrs - || || 0x4b564d00 and 0x4b564d01 ------------------------------------------------------------------------------- -KVM_FEATURE_ASYNC_PF || 4 || async pf can be enabled by - || || writing to msr 0x4b564d02 ------------------------------------------------------------------------------- -KVM_FEATURE_CLOCKSOURCE_STABLE_BIT || 24 || host will warn if no guest-side - || || per-cpu warps are expected in - || || kvmclock. ------------------------------------------------------------------------------- |