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    SubjectRe: [2.6.30-rc8 KVM] gcc 3.3 dies at emulate_2op_cl().
    Tetsuo Handa wrote:
    > (Continued from http://lkml.org/lkml/2009/6/4/14 )
    > I tried to identify the location of gcc 3.3's internal error using
    > "make CONFIG_DEBUG_INFO=1 arch/x86/kvm/x86_emulate.s", and it turned out that
    > the location is emulate_2op_cl().
    >
    > Commenting out like below solves the gcc's internal error.
    >
    > diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
    > index ca91749..561b9b6 100644
    > --- a/arch/x86/kvm/x86_emulate.c
    > +++ b/arch/x86/kvm/x86_emulate.c
    > @@ -2070,7 +2070,7 @@ twobyte_insn:
    > break;
    > case 0xa4: /* shld imm8, r, r/m */
    > case 0xa5: /* shld cl, r, r/m */
    > - emulate_2op_cl("shld", c->src2, c->src, c->dst, ctxt->eflags);
    > + //emulate_2op_cl("shld", c->src2, c->src, c->dst, ctxt->eflags);
    > break;
    > case 0xab:
    > bts: /* bts */
    > @@ -2080,7 +2080,7 @@ twobyte_insn:
    > break;
    > case 0xac: /* shrd imm8, r, r/m */
    > case 0xad: /* shrd cl, r, r/m */
    > - emulate_2op_cl("shrd", c->src2, c->src, c->dst, ctxt->eflags);
    > + //emulate_2op_cl("shrd", c->src2, c->src, c->dst, ctxt->eflags);
    > break;
    > case 0xae: /* clflush */
    > break;
    >
    > I think something is wrong with emulate_2op_cl() when compiled with gcc 3.3.5 .
    >
    >

    This is on i386, not x86_64, yes?

    --
    Do not meddle in the internals of kernels, for they are subtle and quick to panic.



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