Messages in this thread | | | Date | Wed, 28 Jun 2023 12:53:14 +0200 | From | Peter Zijlstra <> | Subject | Re: [EXTERNAL] Re: [PATCH 5/9] x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp enlightened guest |
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On Tue, Jun 27, 2023 at 03:38:35PM +0200, Peter Zijlstra wrote:
> That said; there is a tiny difference between: > > ALTERNATIVE_2(oldinst, newinst1, flag1, newinst2, flag2) > > and > > ALTERNATIVE(ALTERNATIVE(oldinst, newinst1, flag1), > newinst2, flag2) > > and that is alt_instr::instrlen, when the inner alternative is the > smaller, then the outer alternative will add additional padding that the > inner (obviously) doesn't know about.
New version:
https://lkml.kernel.org/r/20230628104952.GA2439977%40hirez.programming.kicks-ass.net
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