Il 07/05/2014 06:21, Bandan Das ha scritto:
> + if (rc != X86EMUL_CONTINNUE)
> + goto done;
> + }
> +
>while (size--) {
> - if (unlikely(ctxt->_eip == fc->end)) {
> - rc = do_insn_fetch_bytes(ctxt);
> - if (rc !=
Il 07/05/2014 06:21, Bandan Das ha scritto:
+ if (rc != X86EMUL_CONTINNUE)
+ goto done;
+ }
+
while (size--) {
- if (unlikely(ctxt-_eip == fc-end)) {
- rc = do_insn_fetch_bytes(ctxt);
- if (rc != X86EMUL_CONTINUE)
Paolo Bonzini writes:
> do_insn_fetch_bytes will only be called once in a given insn_fetch and
> insn_fetch_arr, because in fact it will only be called at most twice
> for any instruction and the first call is explicit in x86_decode_insn.
> This observation lets us hoist the call out of the
do_insn_fetch_bytes will only be called once in a given insn_fetch and
insn_fetch_arr, because in fact it will only be called at most twice
for any instruction and the first call is explicit in x86_decode_insn.
This observation lets us hoist the call out of the memory copying loop.
It does not buy
Paolo Bonzini pbonz...@redhat.com writes:
do_insn_fetch_bytes will only be called once in a given insn_fetch and
insn_fetch_arr, because in fact it will only be called at most twice
for any instruction and the first call is explicit in x86_decode_insn.
This observation lets us hoist the call
do_insn_fetch_bytes will only be called once in a given insn_fetch and
insn_fetch_arr, because in fact it will only be called at most twice
for any instruction and the first call is explicit in x86_decode_insn.
This observation lets us hoist the call out of the memory copying loop.
It does not buy
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