On Mon, Feb 19, 2024 at 01:20:58PM +0800, Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx> wrote: > > > On 1/23/2024 7:53 AM, isaku.yamahata@xxxxxxxxx wrote: > > From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx> > > > > Because TDX virtualize cpuid[0x1].EDX[MTRR: bit 12] to fixed 1, guest TD > > thinks MTRR is supported. Although TDX supports only WB for private GPA, > > it's desirable to support MTRR for shared GPA. As guest access to MTRR > > MSRs causes #VE and KVM/x86 tracks the values of MTRR MSRs, the remining > > s/remining/remaining > > > part is to implement get_mt_mask method for TDX for shared GPA. > > > > Pass around shared bit from kvm fault handler to get_mt_mask method so that > > it can determine if the gfn is shared or private. Implement get_mt_mask() > > following vmx case for shared GPA and return WB for private GPA. > > But the shared bit is not consumed in get_mt_mask()? This paragraph became stale. I eliminated this paragraph. -- Isaku Yamahata <isaku.yamahata@xxxxxxxxxxxxxxx>
