On 01/11/17 17:00, Boris Ostrovsky wrote: > 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>
I've given these a spin on my Zen box, although nothing nested-virt specific. I've pulled the series into x86-next. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
