On Thu, Oct 10, 2024 at 05:13:43PM +0800, Xiaoyao Li wrote: > On 8/13/2024 6:48 AM, Rick Edgecombe wrote: > > From: Xiaoyao Li <xiaoyao.li@xxxxxxxxx> > > > > KVM reports guest physical address in CPUID.0x800000008.EAX[23:16], > > which is similar to TDX's GPAW. Use this field as the interface for > > userspace to configure the GPAW and EPT level for TDs. > > > > Note, > > > > 1. only value 48 and 52 are supported. 52 means GPAW-52 and EPT level > > 5, and 48 means GPAW-48 and EPT level 4. > > 2. value 48, i.e., GPAW-48 is always supported. value 52 is only > > supported when the platform supports 5 level EPT. > > > > Current TDX module doesn't support max_gpa configuration. However > > current implementation relies on max_gpa to configure EPT level and > > GPAW. Hack KVM to make it work. > > This patch needs to be squashed into patch 14. Yes agreed that makes sense. Regards, Tony
