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[Xen-devel] Is: alternative_asm as dependency for STAC/CLAC/new features?
>>> On 23.04.14 at 16:52, <konrad.wilk@xxxxxxxxxx> wrote:
> I think that without this runtime patching the hypervisor will
> suffer a performance penalty on hosts that don't support this.
Host that do support this would suffer too - a conditional branch
doesn't come for free even if not taken.
Also I don't think there's a question whether performance would
be affected, but only the one by how much (or little).
Jan
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