On Mon, 2011-07-11 at 22:51 -0500, Kumar Gala wrote: > On Jul 11, 2011, at 12:52 AM, Michael Neuling wrote: > > > On POWER6 and POWER7 if the input operand to an instruction is a > > denormalised single precision binary floating we can take a > > denormalisation exception where it's expected that the hypervisor (HV=1) > > will fix up the inputs before the instruction is run. > > > > This adds code to handle this denormalisation exception for POWER6 and > > POWER7. > > > > It also add a CONFIG_PPC_DENORMALISATION option and sets it in > > pseries/ppc64_defconfig. > > > > This is useful on bare metal systems only. Based on patch from Milton > > Miller. > > > > Signed-off-by: Michael Neuling <mi...@neuling.org> > > > > --- > > arch/powerpc/Kconfig | 7 + > > arch/powerpc/configs/ppc64_defconfig | 1 > > arch/powerpc/configs/pseries_defconfig | 1 > > arch/powerpc/include/asm/ppc-opcode.h | 2 > > arch/powerpc/include/asm/reg.h | 1 > > arch/powerpc/kernel/exceptions-64s.S | 125 > > +++++++++++++++++++++++++++++++++ > > 6 files changed, 137 insertions(+) > > Is it possible to run POWER6/7 systems in baremetal if you are not IBM? > > Just wondering if this is useful to anyone but IBM.
While I cannot obviously comment on unreleased systems, the fact that we've been contributing all sort of patches to run P7 in "HV" mode and KVM on them should be enough of a hint :-) Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
