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KVM: emulate: clean up initializations in init_decode_cache

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A lot of initializations are unnecessary as they get set to
appropriate values before actually being used. Optimize
placement of fields in x86_emulate_ctxt

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Bandan Das
2014-04-16 12:46:12 -04:00
committed by Paolo Bonzini
parent 02357bdc8c
commit c44b4c6ab8
2 changed files with 13 additions and 14 deletions
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7
arch/x86/kvm/emulate.c
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@@ -4534,14 +4534,11 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *))
void init_decode_cache(struct x86_emulate_ctxt *ctxt)
{
memset(&ctxt->opcode_len, 0,
(void *)&ctxt->_regs - (void *)&ctxt->opcode_len);
memset(&ctxt->has_seg_override, 0,
(void *)&ctxt->modrm - (void *)&ctxt->has_seg_override);
ctxt->fetch.start = 0;
ctxt->fetch.end = 0;
ctxt->io_read.pos = 0;
ctxt->io_read.end = 0;
ctxt->mem_read.pos = 0;
ctxt->mem_read.end = 0;
}