On Fri, Jun 23, 2023 at 09:28:08AM -0700, Saurabh Sengar wrote: > Hyper-V can run VMs at different privilege "levels" known as Virtual > Trust Levels (VTL). Sometimes, it chooses to run two different VMs > at different levels but they share some of their address space. In > such setups VTL2 (higher level VM) has visibility of all of the > VTL0 (level 0) memory space. > > When the CONFIG_X86_MPPARSE is enabled for VTL2, the VTL2 kernel > performs a search within the low memory to locate MP tables. However, > in systems where VTL0 manages the low memory and may contain valid > tables, this scanning can result in incorrect MP table information > being provided to the VTL2 kernel, mistakenly considering VTL0's MP > table as its own > > Add noop functions to avoid MP parse scan by VTL2. > > Signed-off-by: Saurabh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx> Applied to hyperv-fixes. Thanks.
