On Thu, Jan 02, 2020 at 02:13:12PM +0800, Yang Weijiang wrote: > SPPT is a 4-level paging structure similar to EPT, when SPP is > armed for target physical page, bit 61 of the corresponding > EPT entry is flaged, then SPPT is traversed with the gfn, > the leaf entry of SPPT contains the access bitmap of subpages > inside the target 4KB physical page, one bit per 128-byte subpage. > > Co-developed-by: He Chen <he.chen@xxxxxxxxxxxxxxx> > Signed-off-by: He Chen <he.chen@xxxxxxxxxxxxxxx> > Co-developed-by: Zhang Yi <yi.z.zhang@xxxxxxxxxxxxxxx> > Signed-off-by: Zhang Yi <yi.z.zhang@xxxxxxxxxxxxxxx> > Signed-off-by: Yang Weijiang <weijiang.yang@xxxxxxxxx> > --- > arch/x86/include/asm/kvm_host.h | 5 +- > arch/x86/kvm/mmu/spp.c | 228 ++++++++++++++++++++++++++++++++ > arch/x86/kvm/mmu/spp.h | 10 ++ This patch is completely untesteable. It adds spp.c but doesn't compile it. Actually, everything up until patch 06 is untestable.
