On Thu, Nov 07, 2013 at 05:29:15PM +0100, Paolo Bonzini wrote: > Il 07/11/2013 17:21, Michael S. Tsirkin ha scritto: > >> > This fixes the problems with the misalignment of the master abort region. > >> > See patch 2 for details, patch 1 is just a preparatory search-and-replace > >> > patch. > >> > > >> > Paolo Bonzini (2): > >> > split definitions for exec.c and translate-all.c radix trees > >> > exec: make address spaces 64-bit wide > > Can you please share info on testing you did? > > > > "make check", booting a RHEL guest with both KVM and TCG, Luiz's gdb > crash. I also ran vmexit.flat from kvm-unit-tests and checked that > there was no measurable slowdown. > > Paolo
That's on kvm with 52 bit address. But where I would be concerned is systems with e.g. 36 bit address space where we are doubling the cost of the lookup. E.g. try i386 and not x86_64. -- But