[PATCH 0/2] kvm: x86/cpu: Support guest MAXPHYADDR < host MAXPHYADDR

[Mohammed Gamal]

This series adds support for KVM_CAP_HAS_SMALLER_MAXPHYADDR to QEMU.
Some processors might not handle GUEST_MAXPHYADDR < HOST_MAXPHYADDR in
the expected manner. Hence, we added KVM_CAP_HAS_SMALLER_MAXPHYADDR to
KVM.
In this implementation KVM is queried for KVM_CAP_HAS_SMALLER_MAXPHYADDR
when setting vCPU physical bits, and if the CPU doesn't support 
KVM_CAP_HAS_SMALLER_MAXPHYADDR the ,phys-bits is ignore and host phyiscal
bits are used. A warning message is printed to the user.

Mohammed Gamal (2):
  kvm: Add support for KVM_CAP_HAS_SMALLER_MAXPHYADDR
  x86/cpu: Handle GUEST_MAXPHYADDR < HOST_MAXPHYADDR for hosts that
    don't support it

 linux-headers/linux/kvm.h |  1 +
 target/i386/cpu.c         | 11 +++++++++++
 target/i386/kvm.c         |  5 +++++
 target/i386/kvm_i386.h    |  1 +
 4 files changed, 18 insertions(+)

-- 
2.26.2