On 20/12/18 15:18, Wainer dos Santos Moschetta wrote: > > On 12/20/2018 10:11 AM, Paolo Bonzini wrote: >> MPX support is being phased out by Intel; GCC has dropped it, Linux >> is also going to do that. Even though KVM will have special code >> to support MPX after the kernel proper stops enabling it in XCR0, >> we probably also want to deprecate that in a few years. As a start, >> do not enable it by default for any named CPU model starting with >> the 4.0 machine types; this include Skylake, Icelake and Cascadelake. >> >> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> >> --- >> include/hw/i386/pc.h | 29 +++++++++++++++++++++++++++++ >> target/i386/cpu.c | 14 +++++++------- >> 2 files changed, 36 insertions(+), 7 deletions(-) > > Side question: I didn't find on QEMU's user manual any reference to > deprecated features for CPU models. Does that information exists > somewhere? If not, should it be documented for the users?
It's not deprecated yet, as it won't be removed until pc-*-3.1 is deprecated. It may be deprecated together with pc-*-3.1, or maybe not since TCG does implement MPX. Paolo
