[v2,0/2] expose host-phys-bits to guest

Message

Gerd Hoffmann Sept. 8, 2022, 11:31 a.m. UTC

When the guest (firmware specifically) knows how big
the address space actually is it can be used better.

Some more background:
  https://bugzilla.redhat.com/show_bug.cgi?id=2084533

This is a RfC series exposes the information via cpuid.

v2:
 - change fvm hint name.
 - better commit message.

take care,
  Gerd

Gerd Hoffmann (2):
  [temporary] reserve bit KVM_HINTS_PHYS_ADDRESS_SIZE_DATA_VALID
  [RfC] expose host-phys-bits to guest

 include/standard-headers/asm-x86/kvm_para.h | 3 ++-
 target/i386/cpu.h                           | 3 ---
 hw/i386/microvm.c                           | 7 ++++++-
 target/i386/cpu.c                           | 3 +--
 target/i386/host-cpu.c                      | 5 ++++-
 target/i386/kvm/kvm.c                       | 1 +
 6 files changed, 14 insertions(+), 8 deletions(-)