On 10/31/2017 06:03 PM, brian.wo...@amd.com wrote: > From: Brian Woods <brian.wo...@amd.com> > > x86/svm: virtual VMLOAD/VMSAVE > > On AMD family 17h server processors, there is a feature called virtual > VMLOAD/VMSAVE. This allows a nested hypervisor to preform a VMLOAD or > VMSAVE without needing to be intercepted by the host hypervisor. > Virtual VMLOAD/VMSAVE requires the host hypervisor to be in long mode > and nested page tables to be enabled. For more information about it > please see: > > AMD64 Architecture Programmer’s Manual Volume 2: System Programming > http://support.amd.com/TechDocs/24593.pdf > Section: VMSAVE and VMLOAD Virtualization (Section 15.33.1) > > This patch series adds support to check for and enable the virtual > VMLOAD/VMSAVE features if available. > > Signed-off-by: Brian Woods <brian.wo...@amd.com> > > Brian Woods (3): > x86/svm: rename lbr control field in vmcb > x86/svm: add virtual VMLOAD/VMSAVE feature definition > x86/svm: add virtual VMLOAD/VMSAVE support > > xen/arch/x86/hvm/svm/nestedsvm.c | 10 +++++----- > xen/arch/x86/hvm/svm/svm.c | 3 ++- > xen/arch/x86/hvm/svm/svmdebug.c | 2 ++ > xen/arch/x86/hvm/svm/vmcb.c | 7 +++++++ > xen/include/asm-x86/hvm/svm/nestedsvm.h | 4 ++-- > xen/include/asm-x86/hvm/svm/svm.h | 2 ++ > xen/include/asm-x86/hvm/svm/vmcb.h | 7 ++++--- > 7 files changed, 24 insertions(+), 11 deletions(-) >
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
