On Mon, Jan 27, 2014 at 07:11:28PM +0100, Paolo Bonzini wrote: > When KVM also presents Hyper-V features (which is useful because Windows > behaves better), Linux guests prefer KVM because emulated leaves are at > 0x40000000 and the native ones are at 0x40000100. > > However, Linux is then not accounting for the offset when reading the > available hypervisor features from CPUID. Instead of looking at > 0x40000101, it will always look at 0x40000001. > > This series makes sure that features such as async page faults or steal > time are available even if, for whatever reason, Hyper-V features are > enabled. > > As a side effect, patch 1 makes a bunch of code non inline, which also > makes sense since it should only be called during initialization. As > a result, vmlinux .text size decreases by 96 bytes. > > Please review! > > Paolo Bonzini (2): > x86, kvm: cache the base of the KVM cpuid leaves > x86, kvm: correctly access the KVM_CPUID_FEATURES leaf at 0x40000101 > > arch/x86/include/asm/kvm_para.h | 33 ++++++++++++--------------------- > arch/x86/kernel/kvm.c | 31 +++++++++++++++++++++++++++++++ > 2 files changed, 43 insertions(+), 21 deletions(-) > > -- > 1.8.3.1
Reviewed-by: Marcelo Tosatti <mtosa...@redhat.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
